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Missing CAEREPOutput.xml file
I have configured ANSYS RSM, I submit the job from laptop to PC, it successfully finishes solve on PC and wirtes output files (d3plot) in the selected folder on PC, but it does not transfer the files back to the laptop? Any ideas how to resolve this issue?
Avatar
saulius.rackauskas@rsieu.com September 29, 2026
Pass Integration Point Number to User-Defined Material Subroutine
Hi, Is there a way to access the current integration point number from the user-defined material subroutine?  I see in appendix R that it is accessible to the user-defined cohesive materials model subroutines. However, I do not see how to access it in the standard user-defined material models.  I need to compute higher order derivatives of the shape functions as part of a regularization scheme at each integration point for my material model.  Thanks!  
Avatar
mwhitte6@jhu.edu September 28, 2026
R16.1.1 MPP double precision sharelib usermat package for academic research
Hi, I am a PhD candidate in Mechanical Engineering at Purdue University implementing a user defined material (umat41) for LS-DYNA MMALE simulations of granular flow. Ansys Support (Kristy, ACE Customer Operations) replied on September 21, 2026 that academic support is provided through this forum, which is why I am posting here. I understand the ftp.lstc.com/objects credentials cannot be shared. Following the earlier thread "Request for access to dyn21.f file for research project", could an Ansys employee download the matching usermat package and send it to me directly? The Download Center carries the LS-DYNA solver binaries but not the usermat packages. Solver: lsdyna_dp_mpp.e from Purdue's Ansys 2026 R1 installation, revision R16.1.1-32-g1f25c69f9c, Linux x86_64, MPP, double precision, SSE2, Intel Fortran 19.0, Intel MPI 2018.3.222, sharelib. Expected package name: ls-dyna_mpp_d_R16_1_1_x64_centos79_ifort190_sse2_intelmpi-2018_sharelib.usermat.tgz_extractor.sh The license is Purdue University's academic license. I can share our Ansys customer number privately and am happy to continue by email at gngo@purdue.edu.
Avatar
Timmy Ngo September 21, 2026
LS-DYNA isotropic porous model with power law
Dear all, I was wondering whether there is a way to define an isotropic power-law model using the *ICFD_POROUS_MODEL keyword, as is possible in Fluent, for example. The current card only seems to offer the Ergun and Darcy–Forchheimer models. I would appreciate any guidance you could provide on this. Thank you in advance for your help. Best regards, Gred
Avatar
guillaume.renedo@baltgroup.com September 17, 2026
穿模問題
這是模擬器平衝壓成型的過程,外面還有一個外模具,我的沖壓頭會一直穿過鋁片,前面都已經試過contact了,後面用body interaction還是會穿過去 
Avatar
jay123856@gmail.com September 15, 2026
No longer able to access our license server.
Hello, We are running an academic license server for our university on a desktop machine. We have been using our academic license for more than a decade without any issues up until 9/7, after which point our computers have been unable to connect and communicate with the license server. The server is running in the desktop machine, the license file has not expired, and the IP address of the license server is still the same as before.  Please let me know what needs to be done so that we resolve this issue.Many thanks in advance.
Avatar
ikoutromanos September 14, 2026
MAT-024的設置
近期想設置6061在LS Dyna的材料模型,但不知道從哪裡可以找到正確的悟性表
Avatar
jay123856@gmail.com September 12, 2026
Access User Assigned Element Numbers in User-Defined Material
I want to access the user assigned element numbers from the input card deck from within a user-defined material. I can access the LS-Dyna internally assigned element numbers via the idele variable but I do not know how this internal element number maps to the user assigned element number.  Can you please instruct me how to access the user assigned element numbers from within the user-defined material? What array or variable to I need to access?  I tried using the "Ansys Assistant" but it did not produce any solutions to the above problem.  Thanks!
Avatar
mwhitte6@jhu.edu September 11, 2026
LS-PrePost Download for non-ANSYS client
Dear Anyone, I know it is an odd request but it appears that LSPP is no longer accessible and I'm looking for another version of it.  Is there a way a non-client of ANSYS can get access to LS-PrePost? Thank you, George
Avatar
George Laird September 11, 2026
DEM particles penetrating solid & beam elements in LS-DYNA wire mesh simulation
I am simulating the impact of discrete element (DEM) particles on a wire mesh structure in LS-DYNA. The particles are generated using *DEFINE_DE_INJECTION. The structure consists of a frame modeled with solid elements (*MAT_ELASTIC) and wires modeled with beam elements (*MAT_PLASTIC_KINEMATIC). The keyword file was initially generated using ANSYS LS-DYNA (where meshing was also done) and finalized in LS-PrePost. For structural contacts, I defined *CONTACT_AUTOMATIC_GENERAL and *CONTACT_AUTOMATIC_NODES_TO_SURFACE. For the DEM-to-structure interaction, I implemented *DEFINE_DE_TO_BEAM_COUPLING and *DEFINE_DE_TO_SURFACE_COUPLING. However, during the simulation, the DEM particles completely penetrate both the wires and the frame as if the structure does not exist. Are there any missing keywords or specific parameter adjustments required to properly enforce the physical interaction between the DEM particles and the structure?
Avatar
kavya_p230097ce@nitc.ac.in September 10, 2026
Missing CAEREPOutput.xml file
I have configured ANSYS RSM, I submit the job from laptop to PC, it successfully finishes solve on PC and wirtes output files (d3plot) in the selected folder on PC, but it does not transfer the files back to the laptop? Any ideas how to resolve this issue?
Avatar
saulius.rackauskas@rsieu.com September 29, 2026
Pass Integration Point Number to User-Defined Material Subroutine
Hi, Is there a way to access the current integration point number from the user-defined material subroutine?  I see in appendix R that it is accessible to the user-defined cohesive materials model subroutines. However, I do not see how to access it in the standard user-defined material models.  I need to compute higher order derivatives of the shape functions as part of a regularization scheme at each integration point for my material model.  Thanks!  
Avatar
mwhitte6@jhu.edu September 28, 2026
R16.1.1 MPP double precision sharelib usermat package for academic research
Hi, I am a PhD candidate in Mechanical Engineering at Purdue University implementing a user defined material (umat41) for LS-DYNA MMALE simulations of granular flow. Ansys Support (Kristy, ACE Customer Operations) replied on September 21, 2026 that academic support is provided through this forum, which is why I am posting here. I understand the ftp.lstc.com/objects credentials cannot be shared. Following the earlier thread "Request for access to dyn21.f file for research project", could an Ansys employee download the matching usermat package and send it to me directly? The Download Center carries the LS-DYNA solver binaries but not the usermat packages. Solver: lsdyna_dp_mpp.e from Purdue's Ansys 2026 R1 installation, revision R16.1.1-32-g1f25c69f9c, Linux x86_64, MPP, double precision, SSE2, Intel Fortran 19.0, Intel MPI 2018.3.222, sharelib. Expected package name: ls-dyna_mpp_d_R16_1_1_x64_centos79_ifort190_sse2_intelmpi-2018_sharelib.usermat.tgz_extractor.sh The license is Purdue University's academic license. I can share our Ansys customer number privately and am happy to continue by email at gngo@purdue.edu.
Avatar
Timmy Ngo September 21, 2026
LS-DYNA isotropic porous model with power law
Dear all, I was wondering whether there is a way to define an isotropic power-law model using the *ICFD_POROUS_MODEL keyword, as is possible in Fluent, for example. The current card only seems to offer the Ergun and Darcy–Forchheimer models. I would appreciate any guidance you could provide on this. Thank you in advance for your help. Best regards, Gred
Avatar
guillaume.renedo@baltgroup.com September 17, 2026
穿模問題
這是模擬器平衝壓成型的過程,外面還有一個外模具,我的沖壓頭會一直穿過鋁片,前面都已經試過contact了,後面用body interaction還是會穿過去 
Avatar
jay123856@gmail.com September 15, 2026
No longer able to access our license server.
Hello, We are running an academic license server for our university on a desktop machine. We have been using our academic license for more than a decade without any issues up until 9/7, after which point our computers have been unable to connect and communicate with the license server. The server is running in the desktop machine, the license file has not expired, and the IP address of the license server is still the same as before.  Please let me know what needs to be done so that we resolve this issue.Many thanks in advance.
Avatar
ikoutromanos September 14, 2026
MAT-024的設置
近期想設置6061在LS Dyna的材料模型,但不知道從哪裡可以找到正確的悟性表
Avatar
jay123856@gmail.com September 12, 2026
Access User Assigned Element Numbers in User-Defined Material
I want to access the user assigned element numbers from the input card deck from within a user-defined material. I can access the LS-Dyna internally assigned element numbers via the idele variable but I do not know how this internal element number maps to the user assigned element number.  Can you please instruct me how to access the user assigned element numbers from within the user-defined material? What array or variable to I need to access?  I tried using the "Ansys Assistant" but it did not produce any solutions to the above problem.  Thanks!
Avatar
mwhitte6@jhu.edu September 11, 2026
LS-PrePost Download for non-ANSYS client
Dear Anyone, I know it is an odd request but it appears that LSPP is no longer accessible and I'm looking for another version of it.  Is there a way a non-client of ANSYS can get access to LS-PrePost? Thank you, George
Avatar
George Laird September 11, 2026
DEM particles penetrating solid & beam elements in LS-DYNA wire mesh simulation
I am simulating the impact of discrete element (DEM) particles on a wire mesh structure in LS-DYNA. The particles are generated using *DEFINE_DE_INJECTION. The structure consists of a frame modeled with solid elements (*MAT_ELASTIC) and wires modeled with beam elements (*MAT_PLASTIC_KINEMATIC). The keyword file was initially generated using ANSYS LS-DYNA (where meshing was also done) and finalized in LS-PrePost. For structural contacts, I defined *CONTACT_AUTOMATIC_GENERAL and *CONTACT_AUTOMATIC_NODES_TO_SURFACE. For the DEM-to-structure interaction, I implemented *DEFINE_DE_TO_BEAM_COUPLING and *DEFINE_DE_TO_SURFACE_COUPLING. However, during the simulation, the DEM particles completely penetrate both the wires and the frame as if the structure does not exist. Are there any missing keywords or specific parameter adjustments required to properly enforce the physical interaction between the DEM particles and the structure?
Avatar
kavya_p230097ce@nitc.ac.in September 10, 2026

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