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I have a question which I don not understand. In the simulations of deforming of an anisotropic material like aluminum alloy sheet, different coordinates applied to the specimen model may leads to different results. But why? I mean for example, when the uniaxial tension specimen model is in rolling direction or in transverse direction, the anisotropic yield criterion is the same, the associated flow rule but why the results are different?

I have a question which I don not understand. In the simulations of deforming of an anisotropic material like aluminum alloy sheet, different coordinates applied to the specimen model may leads to different results. But why? I mean for example, when the uniaxial tension specimen model is in rolling direction or in transverse direction, the anisotropic yield criterion is the same, the associated flow rule but why the results are different?

I have a question which I don not understand. In the simulations of deforming of an anisotropic material like aluminum alloy sheet, different coordinates applied to the specimen model may leads to different results. But why? I mean for example, when the uniaxial tension specimen model is in rolling direction or in transverse direction, the anisotropic yield criterion is the same, the associated flow rule but why the results are different?

Hello everybody,

I am doing such a kind of FE simulation using ABAQUS Explicit for composite delamination analysis. In this case, I have used once Cohesive Zone Element (CZM) and then with Cohesive Surface for deboning analysis.

The simulation is itself quite dynamic process, somehow the deformation time is only around 3[ms] and the deformation speed is around 5[m/s].

I used the same characteristics for both CZM and Cohesive Surface description. Enhanced Hourglass was also used for Element Control.

Dear friends,

Hi

I want to model a composite material by means of phase field microelasticity (PFM) theory. This method is mainly used by Khachaturyan in recent years. I am very new in this field and I cannot undrestand how to consider the volume fraction of the inclusions in the formulations. Is there anyone who could help me in the field of phase field approaches??? It would be great if anyone can provide me with some information about the algorithm which was used to compute the mechanical properties of composite materials by means of phase field approaches.

I'm wondering if there is a way to get the original data for some figures in published research papers? I've tried to contact the authors, but no responses come back, could I get this data from the journal where is this paper published?

Please give information if you have experienced with this case.

Hi,

I have a VUMAT for progressive damage of fiber composite but that only contains damage initiation. I want to add damage evolution in this sub-routine.

Is there anyone who can help me out solving this? I can provide the subroutine if you want?

Thanks

Hello, everyone, I am writing my Bachelor thesis. It's about the Simulation using ANSYS Workbench to calculate the Strain of Model.

My question is: I can use ANSYS Workbench to calculate the Equivalent Strain von Mises, but the Thesis requires the "Logarithmic Strain".

So I wonder, is there a connction between these two Strains? Or is thers any convertion bwtween these two Strains.

Thank your for your Help.

Hello All,

I have an 3D orphan mesh (Abaqus)  that I obtained from the Gmsh software. I would like to insert a perfect spherical hole in that mesh.

I selected all the elements inside a sphere and deleted them but i am getting a very coarse surface, look at the figure attached


Is there a way to create a perfect spherical hole in a 3D Abaqus mesh ( I do not have the part geometry)  ?

I thought something like,  smooth the inside of the surface of the mesh deletion, but I donot know how to do that.

Dear friends,

I am trying to run a FSI model in abaqus where flow is flowing over a flat plate. I was able to develop and run the model, but I was unable to calculate the lift and the drag force/ coefficients from Abaqus. Can anybody please help me about this how to get these vales from Abaqus? I have already the analytical results for C_l=L/0.5*rho*A*V^2 and C_d=D/0.5*rho*A*V^2 and I want to compare these analytical results with that from Abaqus. In the field otput request, I have pressure and stress already selected.

Thanks

Pratik