{"id":291066,"date":"2023-06-30T10:44:44","date_gmt":"2023-06-30T10:44:44","guid":{"rendered":"\/forum\/forums\/topic\/problem-with-controle-pore-fluid-pore-pressures-in-soils\/"},"modified":"2023-06-30T10:44:44","modified_gmt":"2023-06-30T10:44:44","slug":"problem-with-controle-pore-fluid-pore-pressures-in-soils","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/problem-with-controle-pore-fluid-pore-pressures-in-soils\/","title":{"rendered":"Problem with controle pore fluid, pore pressures in soils"},"content":{"rendered":"<p>Hello everybody, I am a PhD student and I am new at using LS-DYNA. My field is geotechnical engineering. I am trying to simulate simple geotechnical examples in order to get familiar with the software. However, I encountered some problems while simulating a saturated material.<\/p>\n<p>I am modelling 1 3D cube, where the side boundaries are restricted in movement and a load is applied on top. Initially, I checked this model without saturation and the results where the expected (displacement at the top of the cube, horizontal and vertical stresses). However, when I included keywords for saturating the model the vertical stress is equal to zero. This is the case even when the ATYPE is 0 in the keyword *CONTROL_PORE_FLUID.<\/p>\n<p>I am attaching one input file. I am looking forward to any recomendation. Thank you in advance.<\/p>\n<p>&nbsp;<\/p>\n<p>$# LS-DYNA Keyword file created by LS-PrePost(R) V4.7.17 &#8211; 08Jul2020<br \/>$# Created on Jun-28-2023 (18:33:31)<br \/>*KEYWORD<br \/>*TITLE<br \/>$# title<br \/>LS-DYNA keyword deck by LS-PrePost<br \/>*CONTROL_PORE_FLUID<br \/>$# atype wtable pf_rho grav pf_bulk output tmf<br \/>0 0.0 1000.01.00000E-9 9810.0 2200.0 0 1.0<br \/>$# targ fmin fmax conv conmax eterm<br \/>0.0 0.0 0.0 1.01.00000E-41.00000E20 1.0<br \/>*CONTROL_TERMINATION<br \/>$# endtim endcyc dtmin endeng endmas nosol<br \/>1.0 0 0.0 0.01.000000E8 0<br \/>*DATABASE_BINARY_D3PLOT<br \/>$# dt lcdt beam npltc psetid<br \/>0.1 0 0 0 0<br \/>$# ioopt rate cutoff window type pset<br \/>0 0.0 0.0 0.0 0 0<br \/>*BOUNDARY_SPC_SET<br \/>$# nsid cid dofx dofy dofz dofrx dofry dofrz<br \/>1 0 0 0 1 1 1 0<br \/>*SET_NODE_LIST_TITLE<br \/>NODESET(SPC) 1<br \/>$# sid da1 da2 da3 da4 solver<br \/>1 0.0 0.0 0.0 0.0MECH<br \/>$# nid1 nid2 nid3 nid4 nid5 nid6 nid7 nid8<br \/>1 2 3 4 5 6 7 8<br \/>9 0 0 0 0 0 0 0<br \/>*BOUNDARY_SPC_SET<br \/>$# nsid cid dofx dofy dofz dofrx dofry dofrz<br \/>2 0 1 0 0 0 0 0<br \/>*SET_NODE_LIST_TITLE<br \/>NODESET(SPC) 2<br \/>$# sid da1 da2 da3 da4 solver<br \/>2 0.0 0.0 0.0 0.0MECH<br \/>$# nid1 nid2 nid3 nid4 nid5 nid6 nid7 nid8<br \/>3 6 9 12 15 18 21 24<br \/>27 1 4 7 10 13 16 19<br \/>22 25 0 0 0 0 0 0<br \/>*BOUNDARY_SPC_SET<br \/>$# nsid cid dofx dofy dofz dofrx dofry dofrz<br \/>3 0 0 1 0 0 0 0<br \/>*SET_NODE_LIST_TITLE<br \/>NODESET(SPC) 3<br \/>$# sid da1 da2 da3 da4 solver<br \/>3 0.0 0.0 0.0 0.0MECH<br \/>$# nid1 nid2 nid3 nid4 nid5 nid6 nid7 nid8<br \/>1 2 3 10 11 12 19 20<br \/>21 7 8 9 16 17 18 25<br \/>26 27 0 0 0 0 0 0<br \/>*BOUNDARY_SPC_SET<br \/>$# nsid cid dofx dofy dofz dofrx dofry dofrz<br \/>4 0 0 0 0 0 0 0<br \/>*SET_NODE_LIST_TITLE<br \/>NODESET(SPC) 4<br \/>$# sid da1 da2 da3 da4 solver<br \/>4 0.0 0.0 0.0 0.0MECH<br \/>$# nid1 nid2 nid3 nid4 nid5 nid6 nid7 nid8<br \/>19 20 21 22 23 24 25 26<br \/>27 0 0 0 0 0 0 0<br \/>*BOUNDARY_PORE_FLUID_PART<br \/>$# pid wtable pf_rho atype pf_bulk acurve wtcur suclim<br \/>1 1000.01.00000E-9 0 2200.0 0 0 0.0<br \/>*BOUNDARY_PWP_SET<br \/>$# sid lc cmult lcdr tbirth tdeath<br \/>4 0 0.0 0 0.01.00000E20<br \/>$# iphre itotex idrflag table<br \/>0 0 0 0<br \/>*LOAD_SEGMENT_SET_ID<br \/>$# id heading<br \/>1Pressure<br \/>$# ssid lcid sf at<br \/>1 1 1.0 0.0<br \/>*PART<br \/>$# title<br \/>Cube<br \/>$# pid secid mid eosid hgid grav adpopt tmid<br \/>1 1 1 0 0 0 0 0<br \/>*SECTION_SOLID_TITLE<br \/>Cube<br \/>$# secid elform aet<br \/>1 1 0<br \/>*MAT_ELASTIC_TITLE<br \/>Soil<br \/>$# mid ro e pr da db not used<br \/>12.00000E-9 90.0 0.2 0.0 0.0 0.0<br \/>*MAT_ADD_PERMEABILITY_TITLE<br \/>Soil permeability<br \/>$# mid perm<br \/>1 1.0<br \/>*DEFINE_CURVE_TITLE<br \/>Curve_Pressure<br \/>$# lcid sidr sfa sfo offa offo dattyp lcint<br \/>1 0 1.0 1.0 0.0 0.0 0 0<br \/>$# a1 o1<br \/>0.0 0.0<br \/>1.0 1.0<br \/>1.1 1.0<br \/>*SET_SEGMENT<br \/>$# sid da1 da2 da3 da4 solver<br \/>1 0.0 0.0 0.0 0.0MECH<br \/>$# n1 n2 n3 n4 a1 a2 a3 a4<br \/>24 23 20 21 0.0 0.0 0.0 0.0<br \/>23 22 19 20 0.0 0.0 0.0 0.0<br \/>26 25 22 23 0.0 0.0 0.0 0.0<br \/>27 26 23 24 0.0 0.0 0.0 0.0<br \/>*ELEMENT_SOLID<br \/>$# eid pid n1 n2 n3 n4 n5 n6 n7 n8<br \/>1 1 1 2 5 4 10 11 14 13<br \/>2 1 2 3 6 5 11 12 15 14<br \/>3 1 4 5 8 7 13 14 17 16<br \/>4 1 5 6 9 8 14 15 18 17<br \/>5 1 10 11 14 13 19 20 23 22<br \/>6 1 11 12 15 14 20 21 24 23<br \/>7 1 13 14 17 16 22 23 26 25<br \/>8 1 14 15 18 17 23 24 27 26<br \/>*NODE<br \/>$# nid x y z tc rc<br \/>1 0.0 0.0 0.0 0 0<br \/>2 500.0 0.0 0.0 0 0<br \/>3 1000.0 0.0 0.0 0 0<br \/>4 0.0 500.0 0.0 0 0<br \/>5 500.0 500.0 0.0 0 0<br \/>6 1000.0 500.0 0.0 0 0<br \/>7 0.0 1000.0 0.0 0 0<br \/>8 500.0 1000.0 0.0 0 0<br \/>9 1000.0 1000.0 0.0 0 0<br \/>10 0.0 0.0 500.0 0 0<br \/>11 500.0 0.0 500.0 0 0<br \/>12 1000.0 0.0 500.0 0 0<br \/>13 0.0 500.0 500.0 0 0<br \/>14 500.0 500.0 500.0 0 0<br \/>15 1000.0 500.0 500.0 0 0<br \/>16 0.0 1000.0 500.0 0 0<br \/>17 500.0 1000.0 500.0 0 0<br \/>18 1000.0 1000.0 500.0 0 0<br \/>19 0.0 0.0 1000.0 0 0<br \/>20 500.0 0.0 1000.0 0 0<br \/>21 1000.0 0.0 1000.0 0 0<br \/>22 0.0 500.0 1000.0 0 0<br \/>23 500.0 500.0 1000.0 0 0<br \/>24 1000.0 500.0 1000.0 0 0<br \/>25 0.0 1000.0 1000.0 0 0<br \/>26 500.0 1000.0 1000.0 0 0<br \/>27 1000.0 1000.0 1000.0 0 0<br \/>*END<\/p>\n","protected":false},"template":"","class_list":["post-291066","topic","type-topic","status-closed","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Hello everybody, I am a PhD student and I am new at using LS-DYNA. 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