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<?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>18. The "Period" is calculated by what method in AutoPIPE Vessel?</title><link>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/51148/18-the-period-is-calculated-by-what-method-in-autopipe-vessel</link><description /><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>18. The "Period" is calculated by what method in AutoPIPE Vessel?</title><link>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/51148/18-the-period-is-calculated-by-what-method-in-autopipe-vessel</link><pubDate>Wed, 02 Aug 2023 11:02:41 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3c5abaec-f5c0-4fd2-8f2c-d1b95cabefc8</guid><dc:creator>Tanaji Gaikwad</dc:creator><comments>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/51148/18-the-period-is-calculated-by-what-method-in-autopipe-vessel#comments</comments><description>Current Revision posted to AutoPIPE Wiki by Tanaji Gaikwad on 8/2/2023 11:02:41 AM&lt;br /&gt;
&lt;table style="background-color:#dce5f0;border:0px solid #dce5f0;width:500px;"&gt;
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&lt;td style="text-align:right;"&gt;&lt;span style="font-size:medium;"&gt;&lt;b&gt;Applies To &lt;/b&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;AutoPIPE Vessel&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;V8i&amp;nbsp;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area: &lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Report&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Original Author:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley Technical Support Group&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Date Logged&lt;br /&gt;&amp;amp; Current Version&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;June. 2015&lt;br /&gt;33.02.02.04&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h1&gt;&lt;span style="color:#993300;text-decoration:underline;"&gt;&lt;strong&gt;Question:&lt;/strong&gt;&lt;/span&gt;&lt;/h1&gt;
&lt;p style="margin-left:60px;"&gt;For the packaged examples with AutoPIPE Vessel, such as &amp;quot;Vessel on brackets ASME.emvd&amp;quot;, in the calculation result page &amp;quot;Vessel under combination loading&amp;quot; -&amp;gt; &amp;quot;Period and Center of Gravity&amp;quot;, there is output: Period,&lt;/p&gt;
&lt;p style="margin-left:60px;"&gt;Question, This &amp;quot;Period&amp;quot; is calculated by what method?&lt;/p&gt;
&lt;p style="margin-left:60px;"&gt;Eigenvalue to the fifth is output even for a simple model. How to decide the quality of discretization? Is decided automatically by internal, or Or is decided based on some input data?&lt;/p&gt;
&lt;p style="margin-left:60px;"&gt;Furthermore, is this &amp;quot;Period&amp;quot; also used besides the calculation of seismic load, wind load calculations? if so, please let us know it is used in which case?&lt;/p&gt;
&lt;h1&gt;&lt;strong&gt;&lt;span style="text-decoration:underline;"&gt;&lt;span style="background-color:#ffffff;color:#993300;text-decoration:underline;"&gt;Answer:&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/h1&gt;
&lt;p style="margin-left:60px;"&gt;&lt;span style="color:#000000;"&gt;&amp;nbsp;The period is calculated by finite element analysis. The vessel is modeled as a beam. AutoPIPE Vessel consider that brackets prevent rotation and translation so two beams are modeled (one above brackets, the other below).&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin-left:60px;"&gt;&lt;span style="color:#000000;"&gt;User cannot decide the quality of discretisation. AutoPIPE Vessel puts a node for each load. Then other nodes are added to get between 100 and 400 nodes for one vessel.&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin-left:60px;"&gt;&lt;span style="color:#000000;"&gt;The period is used only for seismic calculation and wind calculation.&lt;/span&gt;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p style="padding-left:30px;"&gt;&lt;strong&gt;&lt;a href="/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/28469/--general-information-autopipe-vessel"&gt;AutoPIPE Vessel&lt;/a&gt;&lt;/strong&gt;&lt;/p&gt;
&lt;p style="padding-left:30px;"&gt;&lt;a title="LEARN Server" href="http://lms.bentley.com/"&gt;&lt;b&gt;Bentley LEARN Server&lt;/b&gt;&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;&lt;b&gt;&lt;img alt=" " src="/resized-image/__size/320x240/__key/communityserver-wikis-components-files/00-00-00-00-41/pastedimage1598456807540v1.png" /&gt;&lt;/b&gt;&lt;/h1&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: AutoPIPE Vessel, period, Report&lt;/div&gt;
</description></item><item><title>18. The "Period" is calculated by what method in AutoPIPE Vessel?</title><link>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/51148/18-the-period-is-calculated-by-what-method-in-autopipe-vessel/revision/1</link><pubDate>Wed, 26 Aug 2020 15:46:14 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3c5abaec-f5c0-4fd2-8f2c-d1b95cabefc8</guid><dc:creator>JamieP</dc:creator><comments>https://communities.bentley.com/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/51148/18-the-period-is-calculated-by-what-method-in-autopipe-vessel#comments</comments><description>Revision 1 posted to AutoPIPE Wiki by JamieP on 8/26/2020 3:46:14 PM&lt;br /&gt;
&lt;table style="background-color:#dce5f0;border:0px solid #dce5f0;width:500px;"&gt;
&lt;tbody&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;span style="font-size:medium;"&gt;&lt;b&gt;Applies To &lt;/b&gt;&lt;/span&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Product(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;AutoPIPE Vessel&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Version(s):&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;V8i&amp;nbsp;&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Area: &lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Report&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Original Author:&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;Bentley Technical Support Group&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;tr&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;&lt;/strong&gt;&lt;/td&gt;
&lt;td style="text-align:right;"&gt;&lt;strong&gt;Date Logged&lt;br /&gt;&amp;amp; Current Version&lt;/strong&gt;&lt;/td&gt;
&lt;td&gt;June. 2015&lt;br /&gt;33.02.02.04&lt;/td&gt;
&lt;td&gt;&lt;/td&gt;
&lt;/tr&gt;
&lt;/tbody&gt;
&lt;/table&gt;
&lt;h1&gt;&lt;span style="color:#993300;text-decoration:underline;"&gt;&lt;strong&gt;Question:&lt;/strong&gt;&lt;/span&gt;&lt;/h1&gt;
&lt;p style="margin-left:60px;"&gt;For the packaged examples with AutoPIPE Vessel, such as &amp;quot;Vessel on brackets ASME.emvd&amp;quot;, in the calculation result page &amp;quot;Vessel under combination loading&amp;quot; -&amp;gt; &amp;quot;Period and Center of Gravity&amp;quot;, there is output: Period,&lt;/p&gt;
&lt;p style="margin-left:60px;"&gt;Question, This &amp;quot;Period&amp;quot; is calculated by what method?&lt;/p&gt;
&lt;p style="margin-left:60px;"&gt;Eigenvalue to the fifth is output even for a simple model. How to decide the quality of discretization? Is decided automatically by internal, or Or is decided based on some input data?&lt;/p&gt;
&lt;p style="margin-left:60px;"&gt;Furthermore, is this &amp;quot;Period&amp;quot; also used besides the calculation of seismic load, wind load calculations? if so, please let us know it is used in which case?&lt;/p&gt;
&lt;h1&gt;&lt;strong&gt;&lt;span style="text-decoration:underline;"&gt;&lt;span style="background-color:#ffffff;color:#993300;text-decoration:underline;"&gt;Answer:&lt;/span&gt;&lt;/span&gt;&lt;/strong&gt;&lt;/h1&gt;
&lt;p style="margin-left:60px;"&gt;&lt;span style="color:#000000;"&gt;&amp;nbsp;The period is calculated by finite element analysis. The vessel is modeled as a beam. AutoPIPE Vessel consider that brackets prevent rotation and translation so two beams are modeled (one above brackets, the other below).&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin-left:60px;"&gt;&lt;span style="color:#000000;"&gt;User cannot decide the quality of discretisation. AutoPIPE Vessel puts a node for each load. Then other nodes are added to get between 100 and 400 nodes for one vessel.&lt;/span&gt;&lt;/p&gt;
&lt;p style="margin-left:60px;"&gt;&lt;span style="color:#000000;"&gt;The period is used only for seismic calculation and wind calculation.&lt;/span&gt;&lt;/p&gt;
&lt;h1&gt;See Also&lt;/h1&gt;
&lt;p style="padding-left:30px;"&gt;&lt;strong&gt;&lt;a href="/products/pipe_stress_analysis/w/pipe_stress_analysis__wiki/28469/--general-information-autopipe-vessel"&gt;AutoPIPE Vessel&lt;/a&gt;&lt;/strong&gt;&lt;/p&gt;
&lt;p style="padding-left:30px;"&gt;&lt;a title="LEARN Server" href="http://lms.bentley.com/"&gt;&lt;b&gt;Bentley LEARN Server&lt;/b&gt;&lt;/a&gt;&lt;/p&gt;
&lt;h1&gt;&lt;b&gt;&lt;img src="/resized-image/__size/320x240/__key/communityserver-wikis-components-files/00-00-00-00-41/pastedimage1598456807540v1.png" alt=" " /&gt;&lt;/b&gt;&lt;/h1&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;

&lt;div style="font-size: 90%;"&gt;Tags: AutoPIPE Vessel, period, Report&lt;/div&gt;
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