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Feng, In the past when I have defined viscoelastic material models I created a table from the viscoelastic parameters of the modulus over time. ABAQUS manual has a good explanation of how to enter the viscoelastic data

thanks, that worked out well

try defining a predefined field

I am getting this error message. I don't know what it means "aborted with system error code 5"

I have a 3D deformable body that is being pulled with linear connectors attched to the other end. As the body is pulled there are stress concentrations at the location of teh connectors to the deformable body. Does anyone have a suggestion or a way to apply to connectors with out getting the...

How do I assign multiple concentrated loads at different locations on a rigid body? I can assign a sinlge load at a reference point but iwant to apply multiple loads.

I have a semi circular solid that I want to define trans. isotropic material properties. I defined material orientaions but how do you get the material orientaions to follow the curve of the semi-circle?

I am trying to run a viscoelastic model. Is there a method that allows for tranversely isotrpoic viscoelastic material properties. I am able to run isotropic elastic but I cannot run the trans. iso. viscoelastic

I am importing parts and I want to use poroelastic conditions but the problem is too big to run with quadratic elements. I can not select linear elements though. Is there a setting where I can run the contact problem with linear elements?

I get the following warning in a contact problem with two poroelastic deformable bodies: "There is zero VOL. FLUX everywhere in the model based on the default criterion. please check the value of the average VOL. FLUX during the current iteration to verify that the VOL. FLUX is small enough to...

I am getting this warning, "nodes may have incorrect normal definitions" and I do not understand how to fix it. From the manual, it suggests that it has something to do with how I define my contact surfaces but I do not understand how to redefine my contact surface to fix the error

In order to prestrain a nonlinear spring elements I defined a nonlinear-elastic connector with the force-displacement curve, then I entered the zero load length with the reference length option. Is this the correct method to do this?

I am modeling a poroelastic material. My k is in mm^4*N^-1*s^-1. The input into ABAQUS needs to be in LT^-1. What are the conversion factors?

It was a time increment error. But I added another step that keep the displacement constant after the loading step. Thank you for your time

I am doing a contact analysis. I have a beam with a fixed bottom and I give it a uniform diplacement on top. I apply the disp. as a ramp over the step and it works fine. I apply an amplitude to the displacemnt to perform a stress relaxation analysis, however, when I run the program with the...

I have an object where i want to assign the material properties with respect to the radial, circumfrential and axial direction. I assigned a material orientaion to the part but I do not know how to assign the material propeties to correspond to the datum refernecs I created. Will assigning a...

I tried a few methods but is there any way to insert a datum point of a curved surface 9in order to attach a spring to that surface. i tried projecting onto teh surface but the surface is very irregular and the datum point does not project where I need it to

I have the same problem. How did you fix it?

I am adjusting my seeding and my mesh but i cannot fix all my distorted elements. Whats the best technique?

I am perfroming a contact analysis with a porous material and I get a error that reads "Permeability is specified on 20 elements but the initial void ratio is not defined. Use *initial conditions to the value. The elements are identified in element set ErrElemPermNoInitVoidRatio." I have tried...