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Hi, I know Abaqus reports engineering strain (i.e., nominal strain, or "NE"), and log strain ("LE"). but I wonder if it reports Lagrangian strain as well? I tried to search its documentation, but didn't find any relevant information. Just for comparison, LS-DYNA, another FE software package...

Hi, I have enough Abaqus/Explicit tokens to run in parallel with 16 CPUs. However, it just quits after running package.exe splitting the job into 16 parts (spitting out 16 .pac, .sel, etc. files), writing the 'stable time increment' info in the ".sta" file. And then it just quits with error...

Hi, I need to model a membrane in an assembly, and the membrane need to have certain pre-tension. Can anyone provide any tips how I can apply the initial pre-tension in the membrane elements? Would "pre-tension" option work? Or "Initial condition, type=stress"? Which one is appropriate? Thanks...

Hi, I am simulating a rigid body compression against a soft material. I need to report the contact reaction force. I tried to output "RF" and "TF" for the rigid body node set, but when I visualize them in Abaqus CAE, all values are zero. This is puzzling to me. Can someone tell me how I can...

Hi, I have a curve-shaped object that I am modeling to have the boundary nodes fixed in the surface normal direction, while allowing tangential movement. How can I specify such a boundary condition then? I looked up "*TRANSFORM" keyword, but it seems that the local coordinate system is very...

Hi, This may not be directly related to Abaqus CAE or Abaqus. But I was hoping to generate the strain tensor in a cylindrical coordinate system, and need some help. I was able to use Python to read the 6 NE components from Abaqus odb file after Explicit run. I was also able to construct the...

I am simulating a very simple problem using Abaqus: suppose a spherical solid of gel is enclosed within a rigid sphere of the same radius. The sphere was modeled as a membrane element but with thickness of zero. The interface between the spherical solid and the sphere is a frictional contact...

Hi, Could someone tell me what is the name of the variable for mechanical pressure in a dynamic, explicit simulation? Sorry that I searched the Analysis manual but did not find anything similar to what I need. Thanks! In addition, I see "ERV" is volumetric strain rate? Could someone elaborate...

Hi, Anybody knows how to set up Labview on one machine to initiate command to be executed on another machine? If required, we can have labview on both sides. thanks.

Dear all, I am modeling something using hyperelastic material model. Could someone tell me how to define the material failure? I looked up in "failure tensile; shear failure" etc., but they only apply for either plastic or elatic. Does abaqus support material failure model for the...

Hi, I am reading abaqus manual, and I don't know what's the difference between the uniform pressure and hydrostatic pressure. Isn't hydrostatic pressure a uniform pressure? What's special about it? Thanks.

Hi, I met some weired thing: I specified tied boundary condition between two surfaces. Initially, the slave nodes are aligned with the master rigid body surface, but after a while, the nodes are no longer tied, as I can see from the displacement calculations. Can you tell me why? Is there...

Hello, I met some weired warning message when I try to model a breakable bond: WARNING: "In tied contact pair 3, node 291 on the slave surface UPPER_S has 9.1 times more mass than the mass of node 49901 on the master surface UPPER_M. Significant contact noise may result with the kinematic...

Dear friends, I am simulating a rigid body container with deformable body inside (gel). These two are initially in contact, and there should be initial pressure inside the gel, as well as between the gel and rigid body. My question is, how can I apply the pressure there? This pressure is...

Hi all, I am interested in a more depth of knowledge of the accuracy and performance issues of the element types in Abaqus. I read the manuals on regard of element type selections, but still don't feel I understand them well enough. Do you have any references/links that'll be helpful to me...

Hi, Could someone give me some hint why I get the error message like in the subject?? I am using Abaqus explicit 6.4 for an analysis. The deformable body was meshed in TrueGrid, and the above mentioned error was issued in the .sta file. The nodes that were listed were on the surface of the...

Hi, I'm using standard to simulate how a bowl of gel deforms under its own weight. I defined the contact between these two as frictional BC. I don't understand why I get some very strange result -- the deformed gel has part "outside" the bowl container, something not physically possible...

Hi, Is it possible to extract the natural frequency of a system with soft gel-like material contained in a rigid body container? The gel is in contact with the container. I can extract the natural frequency of the gel (not including the container in the model), but am having trouble to...