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[solids4Foam] Solids Simulation: Stucked & FOAM Warning: From function eigenValues(const tensor&) |
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October 5, 2021, 06:52 |
Solids Simulation: Stucked & FOAM Warning: From function eigenValues(const tensor&)
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New Member
Philipp Conen
Join Date: Jul 2021
Location: Germany, NRW
Posts: 22
Rep Power: 5 |
Dear Foamers,
while doing a little benchmark with solids4Foam and ANSYS Mechanical I run some simulations of a Cantilever. The mesh is made in ANSYS and imported via fluentMeshToFoam. Dealing with 150.000 cells made the model in OpenFOAM stuck. On my local computer I saw an increasing amount of used RAM until nothing more was available, so my computer crashed. Also on the super computer of my university the simulation seems to stucks (without knowledge about the used resources - ?/64GB RAM). My question would be, if the stucked simulation is related to the warning OpenFOAM gave me? What could be the reason for the stuck? How can I fix it? Here are my pre logs: Code:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | solids4Foam::convertCaseFormat start | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ foam-extend-4.0 loaded: no changes made /*---------------------------------------------------------------------------*\ | ========= | | | \\ / F ield | foam-extend: Open Source CFD | | \\ / O peration | Version: 4.1-20200408 | | \\ / A nd | Web: http://www.foam-extend.org | | \\/ M anipulation | For copyright notice see file Copyright | \*---------------------------------------------------------------------------*/ Build : 4.1-20200408 Exec : fluentMeshToFoam mech0_005.msh -writeSets Date : Oct 05 2021 Time : 10:54:04 Host : "cc-v01" PID : 12758 CtrlDict : "/home/ms/p/pc196535/Schreibtisch/MasterthesisDLR/Simulationen/solids4Foam/Sensitivitaetsanalyse/Balken_Sensitivitaetsanalyse/Balken_tipLoad/Balken_tipLoad_0_005/system/controlDict" Case : /home/ms/p/pc196535/Schreibtisch/MasterthesisDLR/Simulationen/solids4Foam/Sensitivitaetsanalyse/Balken_Sensitivitaetsanalyse/Balken_tipLoad/Balken_tipLoad_0_005 nProcs : 1 sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE). allowSystemOperations : Disallowing user-supplied system call operations // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Dimension of grid: 3 Number of points: 168861 number of faces: 468500 Number of cells: 150000 Reading points Reading points Reading uniform faces Reading uniform faces Reading uniform faces Reading uniform faces Reading uniform faces Reading uniform faces Reading uniform faces Other readCellGroupData: 2 1 249f0 1 4 Reading uniform cells Read zone1:1 name:interior-solid patchTypeID:interior Reading zone data Read zone1:2 name:solid patchTypeID:solid Reading zone data Read zone1:5 name:support patchTypeID:wall Reading zone data Read zone1:6 name:tip patchTypeID:wall Reading zone data Read zone1:7 name:top patchTypeID:wall Reading zone data Read zone1:8 name:bot patchTypeID:wall Reading zone data Read zone1:9 name:right patchTypeID:wall Reading zone data Read zone1:10 name:left patchTypeID:wall Reading zone data FINISHED LEXING dimension of grid: 3 Creating shapes for 3-D cells Building patch-less mesh...--> FOAM Warning : From function polyMesh::polyMesh(... construct from shapes...) in file meshes/polyMesh/polyMeshFromShapeMesh.C at line 627 Found 37000 undefined faces in mesh; adding to default patch. done. Building boundary and internal patches. maxZoneID: 10 Creating patch 0 for zone: 1 start: 1 end: 431500 type: interior name: interior-solid Creating patch 1 for zone: 5 start: 431501 end: 432000 type: wall name: support Creating patch 2 for zone: 6 start: 432001 end: 432500 type: wall name: tip Creating patch 3 for zone: 7 start: 432501 end: 447500 type: wall name: top Creating patch 4 for zone: 8 start: 447501 end: 462500 type: wall name: bot Creating patch 5 for zone: 9 start: 462501 end: 465500 type: wall name: right Creating patch 6 for zone: 10 start: 465501 end: 468500 type: wall name: left Writing patch interior-solid of size 431500 to faceSet. Patch interior-solid is internal to the mesh and is not being added to the boundary. Writing patch support of size 500 to faceSet. Adding new patch support of type wall as patch 0 Writing patch tip of size 500 to faceSet. Adding new patch tip of type wall as patch 1 Writing patch top of size 15000 to faceSet. Adding new patch top of type wall as patch 2 Writing patch bot of size 15000 to faceSet. Adding new patch bot of type wall as patch 3 Writing patch right of size 3000 to faceSet. Adding new patch right of type wall as patch 4 Writing patch left of size 3000 to faceSet. Adding new patch left of type wall as patch 5 Default patch type set to empty Writing mesh... to "constant/polyMesh" done. Only one cell group: no set written End /*---------------------------------------------------------------------------*\ | ========= | | | \\ / F ield | foam-extend: Open Source CFD | | \\ / O peration | Version: 4.1-20200408 | | \\ / A nd | Web: http://www.foam-extend.org | | \\/ M anipulation | For copyright notice see file Copyright | \*---------------------------------------------------------------------------*/ Build : 4.1-20200408 Exec : setsToZones -noFlipMap Date : Oct 05 2021 Time : 10:54:07 Host : "cc-v01" PID : 12759 CtrlDict : "/home/ms/p/pc196535/Schreibtisch/MasterthesisDLR/Simulationen/solids4Foam/Sensitivitaetsanalyse/Balken_Sensitivitaetsanalyse/Balken_tipLoad/Balken_tipLoad_0_005/system/controlDict" Case : /home/ms/p/pc196535/Schreibtisch/MasterthesisDLR/Simulationen/solids4Foam/Sensitivitaetsanalyse/Balken_Sensitivitaetsanalyse/Balken_tipLoad/Balken_tipLoad_0_005 nProcs : 1 sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE). allowSystemOperations : Disallowing user-supplied system call operations // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time Create polyMesh for time = 0 Searched : "constant/polyMesh/sets" Found : 7 ( interior-solid tip bot right top left support ) Adding set right as a faceZone. Adding set top as a faceZone. Adding set left as a faceZone. Adding set interior-solid as a faceZone. Adding set tip as a faceZone. Adding set bot as a faceZone. Adding set support as a faceZone. Writing mesh. End Code:
// ************************************************************************* // /*---------------------------------------------------------------------------*\ | ========= | | | \\ / F ield | foam-extend: Open Source CFD | | \\ / O peration | Version: 4.1-20200408 | | \\ / A nd | Web: http://www.foam-extend.org | | \\/ M anipulation | For copyright notice see file Copyright | \*---------------------------------------------------------------------------*/ Build : 4.1-20200408 Exec : solids4Foam Date : Oct 05 2021 Time : 10:54:08 Host : "cc-v01" PID : 12762 CtrlDict : "/home/ms/p/pc196535/Schreibtisch/MasterthesisDLR/Simulationen/solids4Foam/Sensitivitaetsanalyse/Balken_Sensitivitaetsanalyse/Balken_tipLoad/Balken_tipLoad_0_005/system/controlDict" Case : /home/ms/p/pc196535/Schreibtisch/MasterthesisDLR/Simulationen/solids4Foam/Sensitivitaetsanalyse/Balken_Sensitivitaetsanalyse/Balken_tipLoad/Balken_tipLoad_0_005 nProcs : 1 sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE). allowSystemOperations : Disallowing user-supplied system call operations // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // Create time /*---------------------------------------------------------------------------*\ | For further information on the solids4Foam toolbox implementations, | | please see the following publications: | | | | P. Cardiff, A Karac, P. De Jaeger, H. Jasak, J. Nagy, A. Ivankovic, | | Z. Tukovic: An open-source finite volume toolbox for solid mechanics and | | fluid-solid interaction simulations. arXiv:1808.10736v2, 2018, available | | at https://arxiv.org/abs/1808.10736. | | | | Z. Tukovic, A. Karac, P. Cardiff, H. Jasak, A. Ivankovic: OpenFOAM | | finite volume solver for fluid-solid interaction. Transactions of | | Famena, 42 (3), pp. 1-31, 2018, 10.21278/TOF.42301. | \*---------------------------------------------------------------------------*/ Selecting physicsModel solid Selecting solidModel coupledUnsLinearGeometryLinearElastic Selecting dynamicFvMesh staticFvMesh Patch tip Traction boundary field Patch top Traction boundary field Patch bot Traction boundary field Patch right Traction boundary field Patch left Traction boundary field under-relaxation method: fixed /*---------------------------------------------------------------------------*\ | For further information on this class, please see the following | | publication: | | | | P. Cardiff, Z. Tukovic, H, Jasak, A. Ivankovic: A block-coupled finite | | volume methodology for linear elasticity and unstructured meshes. | | Computers and Structures, 2016, 175 100-122, | | DOI: 10.1016/-j.compstruc.2016.07.004. | \*---------------------------------------------------------------------------*/ Creating the mechanicalModel Selecting mechanical law linearElastic Time = 1 Evolving solid solver Solving the momentum equation for D --> FOAM Warning : From function eigenValues(const tensor&) in file primitives/Tensor/tensor/tensor.C at line 180 complex eigenvalues detected for tensor: (4.6875e-06 -1.5625e-06 1.5625e-06 -1.5625e-06 4.6875e-06 1.5625e-06 1.5625e-06 1.5625e-06 4.6875e-06) --> FOAM Warning : From function eigenValues(const tensor&) in file primitives/Tensor/tensor/tensor.C at line 180 complex eigenvalues detected for tensor: (4.6875e-06 -1.5625e-06 1.5625e-06 -1.5625e-06 4.6875e-06 1.5625e-06 1.5625e-06 1.5625e-06 4.6875e-06) --> FOAM Warning : From function eigenValues(const tensor&) in file primitives/Tensor/tensor/tensor.C at line 180 complex eigenvalues detected for tensor: (4.6875e-06 -1.5625e-06 -1.5625e-06 -1.5625e-06 4.6875e-06 -1.5625e-06 -1.5625e-06 -1.5625e-06 4.6875e-06) --> FOAM Warning : From function eigenValues(const tensor&) in file primitives/Tensor/tensor/tensor.C at line 180 complex eigenvalues detected for tensor: (4.6875e-06 -1.5625e-06 -1.5625e-06 -1.5625e-06 4.6875e-06 -1.5625e-06 -1.5625e-06 -1.5625e-06 4.6875e-06) --> FOAM Warning : From function eigenValues(const tensor&) in file primitives/Tensor/tensor/tensor.C at line 180 complex eigenvalues detected for tensor: (4.6875e-06 -1.5625e-06 -1.5625e-06 -1.5625e-06 4.6875e-06 -1.5625e-06 -1.5625e-06 -1.5625e-06 4.6875e-06) --> FOAM Warning : From function eigenValues(const tensor&) in file primitives/Tensor/tensor/tensor.C at line 180 complex eigenvalues detected for tensor: (4.6875e-06 -1.5625e-06 -1.5625e-06 -1.5625e-06 4.6875e-06 -1.5625e-06 -1.5625e-06 -1.5625e-06 4.6875e-06) EigenSolver : writeMatlabFiles is false EigenSparseLU Eigen linear solver Greetings! |
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aborting, ansys, cantiliver, solids4foam, warning |
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