Johan Åberg's Communities Activitieshttps://communities.bentley.com/members/c99e7fcd_2d00_b305_2d00_44a2_2d00_a536_2d00_71008cde676fRecent activity for people in Johan Åberg's communityen-USTelligent Community 12Stiffness modulus when using Hardening soil and Undrained Bhttps://communities.bentley.com/products/geotech-analysis/f/forum/223579/stiffness-modulus-when-using-hardening-soil-and-undrained-bThu, 16 Dec 2021 16:46:34 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:3ca2036f-0b1a-4cbe-93eb-780871372105Johan &#197;berg<p>Hi,</p> <p>I am performing calculations in Plaxis 2D for a deep excavation and am using the Hardening soil model. However i want to set a clay layer to Undrained B as i dont want to overestimate the shear strength of the material.&nbsp;When i change it to undrained B i am aware that the Elastic modulus looses its stress dependency but then im uncertain which stiffness modulus is actually used for the calculation now?</p> <p>Is the calculation for the material performed with Eur for stiffness regardless of strains or load case?</p> <p>Would it then be better to either lower Eur or change model to MC-Undrained B as to not overestimate the stiffness of the material?</p> <p><br />Kind regards,</p> <p>Johan</p><div style="clear:both;"></div>Ask A Question Ihttps://communities.bentley.com/achievements/460ac7df-7ccc-4c42-a204-9e05eef3be09Thu, 16 Dec 2021 02:08:51 GMT6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:d70bd5ec-ead8-45d1-a612-54c0618670abAsk a question in a forum.