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Hi everyone

I need to use two user subroutines UMAT and UAMP in abaqus. as you know in UMAT you can use props to specify matrial constants. in UAMP there is props and nprops to specify constants in abaqus. i specify constants required in UMAT from property module/create material/general/user material and UMAT use these constants but when i specify constants for UAMP in this location and after in entered UMAT constants, UAMP doesn't use them (i specify UAMP constants in props(7) and props(8)). could anyone help me?

thanks.

I am trying to model (3D) dressing process in which both the dressor and the grinding wheel are rotating as deformable bodies using ABAQUS 6.13 (Explicit analysis). I want to simulate a small portion from both wheels rotating against each other with general contact. To rotate them I am applying coupling constraint. However, when I apply coupling constraint to rotate the wheels with their respective reference points (RP's), they become rigid in sense that no stresses are developed. Even if I apply only VR3 to RP's, no stresses will develop in the grinding wheel or dressor.

anyone please help to provide repeated load of 100kN for 5000 repeatitions. each time the load remains there for .3second. time gap between two load application is 1 second.

hi; 

my question is about the use of adhesive bonding in automotive industry; why does it still poor comparing to welding techniques; what is the main drawback that steel non overcomed:

thanx in advance 

Hi,

I am doing a project on the effect of forming in fatigue analysis of a component.I have .key file from dyna which I have to run analysis in abaqus. I need to carry the dyna output containing initial stress and nodal thickness into abaqus and carry analysis which I currently am not able to do it. Kindly suggest me how I can do that if u know.

My  contact number : 9900549731.

Mail id : druvaraj.ks2013 [at] vit.ac.in

Hi

I'm working on optimize an abaqus model. I create my model in .inp file because there are infinite elements in my model and I couldn't create this element in abaqus GUI. Now I want to optimize my model through  python scripts. because I import inp file to abaqus, abaqus don't make any python script from my model that I can add variable to them to optimize my problem.

please help me can I write optimization algorithm in python and add variable in my .inp file?

How to plot multi contours in tecplot at a time from two different files.

for example i have two different excel data files A & B with node coordinate and its mises value. I  knew how to plot the individual contour in Tec plot using individual files A & B but now i want to plot both the contour on same page using these individual files (A+B). So, anyone can help me......  

Hi everyone,

                     First  little bit of background over my model.

I need to extract the consistent mass matrix of a solid element, the thing is every time I use *MATRIX GENNERATE  it gave me the lumped mass matrix which is a reduced version of the consistent mass matrix. However, if I use a beam element, I just need to print out next to *Beam Section, Lumped = NO to give me the consistent mass matrix but only this option is applicable for beam element which will not be helpful model cause I need a solid element.

In summary, I just need to know how to get the consistent mass matrix of a solid element and not the lumped one.

I am writing a subroutine DFLUX for ABAQUS, the FLUX(1) is dependent on strain and stress. But I don't know how to get the strain and stress. I use SPRINC in the code but it seems to be wrong.

The equation for the problem is 

q=(α^2XΩXε^2XE)/2
E=(σ/ε)*sin(d)
σ is stress and ε is strain