<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://communities.bentley.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/"><channel><title>Fluid - PLAXIS UDSM</title><link>https://communities.bentley.com/products/geotech-analysis/w/wiki/52852/fluid---plaxis-udsm</link><description /><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>Fluid - PLAXIS UDSM</title><link>https://communities.bentley.com/products/geotech-analysis/w/wiki/52852/fluid---plaxis-udsm</link><pubDate>Thu, 13 Oct 2022 09:14:01 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:bb41cdae-84a3-438b-8b92-aa9a8b3015e9</guid><dc:creator>Felipe Fonseca</dc:creator><comments>https://communities.bentley.com/products/geotech-analysis/w/wiki/52852/fluid---plaxis-udsm#comments</comments><description>Current Revision posted to GeoStudio | PLAXIS Wiki by Felipe Fonseca on 10/13/2022 9:14:01 AM&lt;br /&gt;
&lt;div class="content-scrollable-wrapper" style="border-collapse:collapse;overflow:auto;padding-bottom:30px;"&gt;
&lt;table style="background-color:#fffff;border:#56aa1c 0px solid;border-width:1px 0px 0px 0px;width:500px;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Application&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;PLAXIS 2D&lt;br /&gt;PLAXIS 3D&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Version&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;PLAXIS 2D CONNECT Edition V21&lt;br /&gt;PLAXIS 3D CONNECT Edition V21&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Date created&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;25 January 2021&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Date modified&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;25 January 2021&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;tbody&gt;&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;!--–– end of Bentley header ––--&gt;
&lt;p&gt;With the release of PLAXIS 2D/3D CONNECT Edition V21, a new User Defined Soil Model is introduced: the Fluid model.&lt;/p&gt;
&lt;p&gt;This constitutive model has been specifically created to simulate the effects of free water on water-retaining structures and quay walls or any other situation involving fluid-structure interaction. Like any other material model in PLAXIS, the fluid is simply modeled as a solid continuum, with the capability to support an indefinite level of hydrostatic pressure and, more importantly, to exhibit negligible shear stresses. The only specific parameter to be defined is the bulk modulus of the fluid (e.g. K = 2.2GPa in case of water) whereas the shear modulus is internally calculated to avoid numerical issues due to the incompressibility constraint, that is Poisson&amp;rsquo;s ratio approaching 0.5. This model comes in handy when hydrodynamics pressure build-ups need to be taken into serious consideration in the design, specifically when more simplified and straightforward procedures based on the added mass concept, also available in PLAXIS, prove to be not suitable or sufficiently accurate for the purpose.&lt;/p&gt;
&lt;p&gt;&lt;img alt="Dynamic displacement response of a dam comparing the Fluid model against the Added mass feature" src="/resized-image/__size/480x480/__key/communityserver-wikis-components-files/00-00-00-05-58/plaxis_5F00_fluid_5F00_dynamic_5F00_response.png" /&gt;&lt;br /&gt; &lt;em&gt;Dynamic displacement response of a dam comparing the Fluid model against the Added mass feature&lt;/em&gt;&lt;/p&gt;
&lt;p&gt;With the release of PLAXIS 2D/3D CONNECT Edition V21 (January 2021), this PLAXIS User Defined Soil Model is delivered with the PLAXIS installation. When using the PLAXIS Advanced or PLAXIS Ultimate version and enabling the &lt;a href="/products/geotech-analysis/w/plaxis-soilvision-wiki/50223/geotechnical-select-entitlements-gse"&gt;Geotechnical SELECT Entitlement [GSE]&lt;/a&gt; when &lt;a href="/products/geotechnical1/w/wiki/42958/starting-plaxis"&gt;starting the PLAXIS application&lt;/a&gt;, this model becomes available in the &lt;em&gt;Parameters&lt;/em&gt; tab when selecting &amp;quot;User-defined&amp;quot; for the &lt;em&gt;Material model&lt;/em&gt;.&lt;/p&gt;
&lt;div&gt;
&lt;h4&gt;Downloads&lt;/h4&gt;
&lt;ul style="color:#56aa1c;list-style-type:square;padding-bottom:5px;"&gt;
&lt;li&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-05-58/PLAXISCEV21.00_5F00_Fluid_5F00_User_2D00_Manual.pdf"&gt;PLAXIS CE V21.00: Fluid - User-Manual [.pdf]&lt;/a&gt;&amp;nbsp;&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
&lt;div&gt;
&lt;h4&gt;See also&lt;/h4&gt;
&lt;div style="padding-left:20px;" id="plxrelated"&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotech-analysis/w/plaxis-soilvision-wiki/46270/westergaard-s-added-mass-for-hydrodynamic-pressures-a-simple-case"&gt;Westergaard&amp;#39;s added mass for hydrodynamic pressures: a simple case&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Tips and Tricks]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;hr style="border:1px solid #56aa1c;width:98%;" /&gt;
&lt;div style="padding-left:20px;" id="plxrelated"&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotechnical1/w/wiki/45890/how-to-use-a-user-defined-soil-model-in-plaxis"&gt;How to use a user defined soil model in PLAXIS&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Videos]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;hr style="border:1px solid #56aa1c;width:98%;" /&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotechnical1/w/wiki/45468/plaxis-user-defined-soil-models"&gt;Plaxis User Defined Soil Models&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Models]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: water, reservoir, UDSM, Liquid, PLAXIS, dynamics, Fluid, plx-udsm, User defined soil model&lt;/div&gt;
</description></item><item><title>Fluid - PLAXIS UDSM</title><link>https://communities.bentley.com/products/geotech-analysis/w/wiki/52852/fluid---plaxis-udsm/revision/4</link><pubDate>Tue, 26 Jan 2021 17:17:48 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:bb41cdae-84a3-438b-8b92-aa9a8b3015e9</guid><dc:creator>Micha van der Sloot</dc:creator><comments>https://communities.bentley.com/products/geotech-analysis/w/wiki/52852/fluid---plaxis-udsm#comments</comments><description>Revision 4 posted to GeoStudio | PLAXIS Wiki by Micha van der Sloot on 1/26/2021 5:17:48 PM&lt;br /&gt;
&lt;div class="content-scrollable-wrapper" style="border-collapse:collapse;overflow:auto;padding-bottom:30px;"&gt;
&lt;table style="background-color:#fffff;border:#56aa1c 0px solid;border-width:1px 0px 0px 0px;width:500px;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Application&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;PLAXIS 2D&lt;br /&gt;PLAXIS 3D&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Version&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;PLAXIS 2D CONNECT Edition V21&lt;br /&gt;PLAXIS 3D CONNECT Edition V21&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Date created&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;25 January 2021&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Date modified&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;25 January 2021&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;tbody&gt;&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;!--–– end of Bentley header ––--&gt;
&lt;p&gt;With the release of PLAXIS 2D/3D CONNECT Edition V21, a new User Defined Soil Model is introduced: the Fluid model.&lt;/p&gt;
&lt;p&gt;This constitutive model has been specifically created to simulate the effects of free water on water-retaining structures and quay walls or any other situation involving fluid-structure interaction. Like any other material model in PLAXIS, the fluid is simply modeled as a solid continuum, with the capability to support an indefinite level of hydrostatic pressure and, more importantly, to exhibit negligible shear stresses. The only specific parameter to be defined is the bulk modulus of the fluid (e.g. K = 2.2GPa in case of water) whereas the shear modulus is internally calculated to avoid numerical issues due to the incompressibility constraint, that is Poisson&amp;rsquo;s ratio approaching 0.5. This model comes in handy when hydrodynamics pressure build-ups need to be taken into serious consideration in the design, specifically when more simplified and straightforward procedures based on the added mass concept, also available in PLAXIS, prove to be not suitable or sufficiently accurate for the purpose.&lt;/p&gt;
&lt;p&gt;&lt;img alt="Dynamic displacement response of a dam comparing the Fluid model against the Added mass feature" src="/resized-image/__size/480x480/__key/communityserver-wikis-components-files/00-00-00-05-58/plaxis_5F00_fluid_5F00_dynamic_5F00_response.png" /&gt;&lt;br /&gt; &lt;em&gt;Dynamic displacement response of a dam comparing the Fluid model against the Added mass feature&lt;/em&gt;&lt;/p&gt;
&lt;p&gt;With the release of PLAXIS 2D/3D CONNECT Edition V21 (January 2021), this PLAXIS User Defined Soil Model is delivered with the PLAXIS installation. When using the PLAXIS Advanced or PLAXIS Ultimate version and enabling the &lt;a href="/products/geotech-analysis/w/plaxis-soilvision-wiki/50223/geotechnical-select-entitlements-gse"&gt;Geotechnical SELECT Entitlement [GSE]&lt;/a&gt; when &lt;a href="/products/geotechnical1/w/wiki/42958/starting-plaxis"&gt;starting the PLAXIS application&lt;/a&gt;, this model becomes available in the &lt;em&gt;Parameters&lt;/em&gt; tab when selecting &amp;quot;User-defined&amp;quot; for the &lt;em&gt;Material model&lt;/em&gt;.&lt;/p&gt;
&lt;div&gt;
&lt;h4&gt;Downloads&lt;/h4&gt;
&lt;ul style="color:#56aa1c;list-style-type:square;padding-bottom:5px;"&gt;
&lt;li&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-05-58/PLAXISCEV21.00_5F00_Fluid_5F00_User_2D00_Manual.pdf"&gt;PLAXIS CE V21.00: Fluid - User-Manual [.pdf]&lt;/a&gt;&amp;nbsp;&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
&lt;div&gt;
&lt;h4&gt;See also&lt;/h4&gt;
&lt;div style="padding-left:20px;" id="plxrelated"&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotech-analysis/w/plaxis-soilvision-wiki/46270/westergaard-s-added-mass-for-hydrodynamic-pressures-a-simple-case"&gt;Westergaard&amp;#39;s added mass for hydrodynamic pressures: a simple case&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Tips and Tricks]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;hr style="border:1px solid #56aa1c;width:98%;" /&gt;
&lt;div style="padding-left:20px;" id="plxrelated"&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotechnical1/w/wiki/45890/how-to-use-a-user-defined-soil-model-in-plaxis"&gt;How to use a user defined soil model in PLAXIS&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Videos]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;hr style="border:1px solid #56aa1c;width:98%;" /&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotechnical1/w/wiki/45468/plaxis-user-defined-soil-models"&gt;Plaxis User Defined Soil Models&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Models]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: water, reservoir, UDSM, Liquid, PLAXIS, dynamics, Fluid, plx-udsm, User defined soil model&lt;/div&gt;
</description></item><item><title>Fluid - PLAXIS UDSM</title><link>https://communities.bentley.com/products/geotech-analysis/w/wiki/52852/fluid---plaxis-udsm/revision/3</link><pubDate>Mon, 25 Jan 2021 08:59:03 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:bb41cdae-84a3-438b-8b92-aa9a8b3015e9</guid><dc:creator>Micha van der Sloot</dc:creator><comments>https://communities.bentley.com/products/geotech-analysis/w/wiki/52852/fluid---plaxis-udsm#comments</comments><description>Revision 3 posted to GeoStudio | PLAXIS Wiki by Micha van der Sloot on 1/25/2021 8:59:03 AM&lt;br /&gt;
&lt;div class="content-scrollable-wrapper" style="border-collapse:collapse;overflow:auto;padding-bottom:30px;"&gt;
&lt;table style="background-color:#fffff;border:#56aa1c 0px solid;border-width:1px 0px 0px 0px;width:500px;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Application&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;PLAXIS 2D&lt;br /&gt;PLAXIS 3D&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Version&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;PLAXIS 2D CONNECT Edition V21&lt;br /&gt;PLAXIS 3D CONNECT Edition V21&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Date created&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;25 January 2021&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Date modified&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;25 January 2021&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;tbody&gt;&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;!--–– end of Bentley header ––--&gt;
&lt;p&gt;With the release of PLAXIS 2D/3D CONNECT Edition V21, a new User Defined Soil Model is introduced: the Fluid model.&lt;/p&gt;
&lt;p&gt;This constitutive model has been specifically created to simulate the effects of free water on water-retaining structures and quay walls or any other situation involving fluid-structure interaction. Like any other material model in PLAXIS, the fluid is simply modeled as a solid continuum, with the capability to support an indefinite level of hydrostatic pressure and, more importantly, to exhibit negligible shear stresses. The only specific parameter to be defined is the bulk modulus of the fluid (e.g. K = 2.2GPa in case of water) whereas the shear modulus is internally calculated to avoid numerical issues due to the incompressibility constraint, that is Poisson&amp;rsquo;s ratio approaching 0.5. This model comes in handy when hydrodynamics pressure build-ups need to be taken into serious consideration in the design, specifically when more simplified and straightforward procedures based on the added mass concept, also available in PLAXIS, prove to be not suitable or sufficiently accurate for the purpose.&lt;/p&gt;
&lt;p&gt;&lt;img alt="Dynamic displacement response of a dam comparing the Fluid model against the Added mass feature" src="/resized-image/__size/480x480/__key/communityserver-wikis-components-files/00-00-00-05-58/plaxis_5F00_fluid_5F00_dynamic_5F00_response.png" /&gt;&lt;br /&gt; &lt;em&gt;Dynamic displacement response of a dam comparing the Fluid model against the Added mass feature&lt;/em&gt;&lt;/p&gt;
&lt;p&gt;With the release of PLAXIS 2D/3D CONNECT Edition V21 (January 2021), this PLAXIS User Defined Soil Model is delivered with the PLAXIS installation. When using the PLAXIS Advanced or PLAXIS Ultimate version and enabling the &lt;a href="/products/geotech-analysis/w/plaxis-soilvision-wiki/50223/geotechnical-select-entitlements-gse"&gt;Geotechnical SELECT Entitlement [GSE]&lt;/a&gt; when &lt;a href="/products/geotechnical1/w/wiki/42958/starting-plaxis"&gt;starting the PLAXIS application&lt;/a&gt;, this model becomes available in the &lt;em&gt;Parameters&lt;/em&gt; tab when selecting &amp;quot;User-defined&amp;quot; for the &lt;em&gt;Material model&lt;/em&gt;.&lt;/p&gt;
&lt;div&gt;
&lt;h4&gt;Downloads&lt;/h4&gt;
&lt;ul style="color:#56aa1c;list-style-type:square;padding-bottom:5px;"&gt;
&lt;li&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-05-58/PLAXISCEV21.00_5F00_Fluid_5F00_User_2D00_Manual.pdf"&gt;PLAXIS CE V21.00: Fluid - User-Manual [.pdf]&lt;/a&gt;&amp;nbsp;&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
&lt;div&gt;
&lt;h4&gt;See also&lt;/h4&gt;
&lt;div style="padding-left:20px;" id="plxrelated"&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotech-analysis/w/plaxis-soilvision-wiki/46270/westergaard-s-added-mass-for-hydrodynamic-pressures-a-simple-case"&gt;Westergaard&amp;#39;s added mass for hydrodynamic pressures: a simple case&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Tips and Tricks]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;hr style="border:1px solid #56aa1c;width:98%;" /&gt;
&lt;div style="padding-left:20px;" id="plxrelated"&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotechnical1/w/wiki/45890/how-to-use-a-user-defined-soil-model-in-plaxis"&gt;How to use a user defined soil model in PLAXIS&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Videos]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;hr style="border:1px solid #56aa1c;width:98%;" /&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotechnical1/w/wiki/45468/plaxis-user-defined-soil-models"&gt;Plaxis User Defined Soil Models&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Models]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: water, reservoir, UDSM, Liquid, dynamics, Fluid, plx-udsm, User defined soil model&lt;/div&gt;
</description></item><item><title>Fluid - PLAXIS UDSM</title><link>https://communities.bentley.com/products/geotech-analysis/w/wiki/52852/fluid---plaxis-udsm/revision/2</link><pubDate>Fri, 22 Jan 2021 14:57:05 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:bb41cdae-84a3-438b-8b92-aa9a8b3015e9</guid><dc:creator>Micha van der Sloot</dc:creator><comments>https://communities.bentley.com/products/geotech-analysis/w/wiki/52852/fluid---plaxis-udsm#comments</comments><description>Revision 2 posted to GeoStudio | PLAXIS Wiki by Micha van der Sloot on 1/22/2021 2:57:05 PM&lt;br /&gt;
&lt;div class="content-scrollable-wrapper" style="border-collapse:collapse;overflow:auto;padding-bottom:30px;"&gt;
&lt;table style="background-color:#fffff;border:#56aa1c 0px solid;border-width:1px 0px 0px 0px;width:500px;" border="0"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Application&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;PLAXIS 2D&lt;br /&gt;PLAXIS 3D&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Version&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;PLAXIS 2D CONNECT Edition V21&lt;br /&gt;PLAXIS 3D CONNECT Edition V21&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Date created&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;25 January 2021&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:right;"&gt;&lt;strong&gt;Date modified&lt;/strong&gt;&lt;/td&gt;
&lt;td style="border-bottom:#56aa1c 1px solid;padding:4px 5px 4px 50px;text-align:left;"&gt;25 January 2021&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;tbody&gt;&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;!--–– end of Bentley header ––--&gt;
&lt;p&gt;With the release of PLAXIS 2D/3D CONNECT Edition V21, a new User Defined Soil Model is introduced: the Fluid model.&lt;/p&gt;
&lt;p&gt;This constitutive model has been specifically created to simulate the effects of free water on water-retaining structures and quay walls or any other situation involving fluid-structure interaction. Like any other material model in PLAXIS, the fluid is simply modeled as a solid continuum, with the capability to support an indefinite level of hydrostatic pressure and, more importantly, to exhibit negligible shear stresses. The only specific parameter to be defined is the bulk modulus of the fluid (e.g. K = 2.2GPa in case of water) whereas the shear modulus is internally calculated to avoid numerical issues due to the incompressibility constraint, that is Poisson&amp;rsquo;s ratio approaching 0.5. This model comes in handy when hydrodynamics pressure build-ups need to be taken into serious consideration in the design, specifically when more simplified and straightforward procedures based on the added mass concept, also available in PLAXIS, prove to be not suitable or sufficiently accurate for the purpose.&lt;/p&gt;
&lt;p&gt;&lt;img alt="Dynamic displacement response of a dam comparing the Fluid model against the Added mass feature" src="/resized-image/__size/480x480/__key/communityserver-wikis-components-files/00-00-00-05-58/plaxis_5F00_fluid_5F00_dynamic_5F00_response.png" /&gt;&lt;br /&gt; &lt;em&gt;Dynamic displacement response of a dam comparing the Fluid model against the Added mass feature&lt;/em&gt;&lt;/p&gt;
&lt;p&gt;With the release of PLAXIS 2D/3D CONNECT Edition V21 (January 2021), this PLAXIS User Defined Soil Model is delivered with the PLAXIS installation. When using the PLAXIS Advanced or PLAXIS Ultimate version and enabling the &lt;a href="/products/geotech-analysis/w/plaxis-soilvision-wiki/50223/geotechnical-select-entitlements-gse"&gt;Geotechnical SELECT Entitlement [GSE]&lt;/a&gt; when &lt;a href="/products/geotechnical1/w/wiki/42958/starting-plaxis"&gt;starting the PLAXIS application&lt;/a&gt;, this model becomes available in the &lt;em&gt;Parameters&lt;/em&gt; tab when selecting &amp;quot;User-defined&amp;quot; for the &lt;em&gt;Material model&lt;/em&gt;.&lt;/p&gt;
&lt;div&gt;
&lt;h4&gt;Downloads&lt;/h4&gt;
&lt;ul style="color:#56aa1c;list-style-type:square;padding-bottom:5px;"&gt;
&lt;li&gt;&lt;a href="/cfs-file/__key/communityserver-wikis-components-files/00-00-00-05-58/PLAXISCEV21.00_5F00_HBS_5F00_User_2D00_Manual.pdf"&gt;PLAXIS CE V21.00: Fluid - User-Manual [.pdf]&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;
&lt;/div&gt;
&lt;div&gt;
&lt;h4&gt;See also&lt;/h4&gt;
&lt;div style="padding-left:20px;" id="plxrelated"&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotech-analysis/w/plaxis-soilvision-wiki/46270/westergaard-s-added-mass-for-hydrodynamic-pressures-a-simple-case"&gt;Westergaard&amp;#39;s added mass for hydrodynamic pressures: a simple case&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Tips and Tricks]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;hr style="border:1px solid #56aa1c;width:98%;" /&gt;
&lt;div style="padding-left:20px;" id="plxrelated"&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotechnical1/w/wiki/45890/how-to-use-a-user-defined-soil-model-in-plaxis"&gt;How to use a user defined soil model in PLAXIS&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Videos]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;hr style="border:1px solid #56aa1c;width:98%;" /&gt;
&lt;div id="plxrelateditem"&gt;
&lt;p&gt;&lt;a style="font-size:110%;" href="/products/geotechnical1/w/wiki/45468/plaxis-user-defined-soil-models"&gt;Plaxis User Defined Soil Models&lt;/a&gt;&amp;nbsp;&amp;nbsp;&amp;nbsp;&amp;nbsp;&lt;span style="font-size:90%;"&gt;[Models]&lt;/span&gt;&lt;/p&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: water, reservoir, UDSM, Liquid, dynamics, Fluid, plx-udsm, User defined soil model&lt;/div&gt;
</description></item><item><title>Fluid (UDSM)</title><link>https://communities.bentley.com/products/geotech-analysis/w/wiki/52852/fluid---plaxis-udsm/revision/1</link><pubDate>Fri, 22 Jan 2021 13:35:30 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:bb41cdae-84a3-438b-8b92-aa9a8b3015e9</guid><dc:creator>Micha van der Sloot</dc:creator><comments>https://communities.bentley.com/products/geotech-analysis/w/wiki/52852/fluid---plaxis-udsm#comments</comments><description>Revision 1 posted to GeoStudio | PLAXIS Wiki by Micha van der Sloot on 1/22/2021 1:35:30 PM&lt;br /&gt;
&lt;p&gt;To be available soon! Stay posted.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;
</description></item></channel></rss>