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selecting suface nodes in orphan mesh by python script????

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    I have a 3D orphan mesh in abaqus and I need to select a group of nodes that belong to the orphan mesh and that would have been on a 3D surface of the parent solid before it was orphaned.

   I know how to do this in Abaqus/CAE, but I don't konw how to realize it using python scripts. If there is a method, just like using "findAt()" to select a surface by coordinates , to select all the nodes on a outer surface of the orphan mesh and to select all orphan elements?

XFEM in Abaqus


I am new to modelling and am trying to model a plate with a middle crack using Abaqus.

 What is the difference between modelling a cohesive and LEFM crack growth (I know cohesive involves plasticity and the traction/displacement curve and LEFM is for brittle materials).

 For cohesive, I used max principal stress for damage criteria and damage evolution based on energy criteria. 

Abaqus Help

Hello everyone. I am new to Abaqus and was wondering how to create a model of a heat sink mounted on a heated silicon dioxide substrate. The substrate is on the left side and is a rectangle with a height of 40 mm and width of 5 mm. The heat sink is connected to the right of that with a parrellelogram shape, left side height of 40 mm (adjacent to the substrate), and right side parallel with a height of 5 mm. If anyone can help it is greatly appreciated. When I try modeling it, during section assignments it will not allow me to assign any sections. I have attached a picture of the model.

Difining Interior Surfaces in Abaqus


Is that possible to define an INTERIOR surface in Abaqus???

Cutting process simulation in Abaqus

Hello ,

 I am working on a project using abaqus to
simulate miling process. As the first stage, I have to be able to simulate cutting process in Abaqus. I have looked up Abacus 6.11 documentaion a lot but did not find too much of usefull information. Could any one kindly give some hints how to develop such model or introduce me some usefull complete resources?



ABAQUS Python Output

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Hello everyone,

Anisotropic plasticity and hyperelasticity in Abaqus

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I am trying to model a polymer that has been processed in such a way that it has oriented (orthotropic) material properties and undergoes very high strains (>100%) before break.

Sliding In Abaqus

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Hello everybody.

 I am trying to use abaqus software to model the sliding of a metallic pile inside a metallic sleeve. I have tried doing this with the translator connector, but I always get the message that 2 regions in the model are not connected. Can anybody help me with some hints as to how to use the connector, or if there are any other ways to model the sliding? 

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Stress-Strain curve for Concrete Damaged Plasticity in Abaqus



I am using Concrete Damaged Plasticity model. My parameters are correct but I am not able to get the desired stress-strain curve for my model.

Can anyone help me with how do I plot the stress strain curve for it (Nominal Stress vs Strain, Reaction force vs displacement or anything else)?

I want to know the exact procedure to do it.

Thanks in advance. 

how to find undex charge property parameters?

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i need to define bubble load in ABAQUS.

but there is some paramaters as explosion charge properties should be defined.

for example Charge material constant, K.  or  Ratio of specific heats for gas  or   Density of charge material.



how can i find these properties for any exlposion charge eg. TNT ?


i appreciate your help

Need Help for Abaqus/CAE ( best method for fatigue test for tensile test for a number of cycle)

Dear friends, i current doing a project work on testing fatigue life of superelastic nitinol. And since i am very new in using abaqus for testing the simulation, i seeking help from people around here to ask for method to test the work. My objective is to set a maximum elongation for 1%-6% of elongation and test for 40,000 cycle if it can work for this amount of cycle..

i Hope anyone can help me as i need to finish this project in order to graduate and i didnt get any single help from regarding this software from my side..

ABAQUS-cohesive elements in compression

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Hi all,

Abaqus - warning message: c3d4h elements will enforce vol .... use *tie

Dear iMechanica-User,

i habe  a general question according to Abaqus. I'm dealing with an biom. model of the breast and i  created the mesh with the toolbox iso2mesh (matlab) / c3d4h elements - each element has it's own youngs modulusand is therefore defined as singel solid section (per element), but all elements use the same node-list. Simulation is done by compression of the breast using two plates.

So here is the problem: i always get the warning message: 

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Convergence problems in Abaqus-Fortran

Hi mechanicians:

I decided to post because I have an inconvenience that is not shown in other posts.

I am working in the Abaqus - Fortran environment in a thermal analysis. After implementing a new procedure (which actually works), the .sta file shows me that it has problems in its unique step, more or less in the 60th iteration (it is supposed to get until 500). Twenty iterations after that gets into interruptions because the code cannot converge.

With these lines it is easier to understand my point:

how to compute cavitation effect by ABAQUS

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i need to simulate the "bulk" and "local" cavitation region around a structure in fluid subjected to underwater explosion.

maybe i need to calculate the negative pressure regions. but how?!

how can i define the condition and compute that cavitation effects by ABAQUS?


i appreciate your help




XFEM Location of Crack Tip

In using Abaqus 6.12 XFEM software is there a field output request that can be specified to track the location of the crack tip as a crack grows through time?

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Subsea impact simulation with Abaqus

Hi every body

My thesis is about ship grounding. In this phenomenon, ship hit a rock. I can simulate this problem in Abaqus/Standard,without wave effect. But in reality there is water and waves. Can I simulate this problem with ABAQUS? Is it possible to define water(or wave) aruond ship and rock?


Electric Potential B.C. in the Dynamic/Explicit Step

Hey all,

I am trying to apply an Electric Potential B.C. to a surface. I want to use the dynamic/explicit analysis type, however, when I select that as my step type, the Electric Potential B.C. option disappears from the edit B.C. window! Is that due to a license limitation or an error I might have made in one of the definitions?

Thank you!

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New SIMULIA Tech Brief: Cogging Torque Analysis of Permanent Magnet Machines using Abaqus/Standard

When designing a permanent magnet machine, one of the most fundamental and difficult goals is to reduce the cogging torque curve. The challenge in reducing the cogging torque is to also decrease the numerical noise generated by the mesh. Finite element analyses and the advanced meshing functionality that is available through Abaqus/CAE allows for a faster and more accurate prototype.

How to plot Fracture toughness vs Crack length in Abaqus for Delamination problem

I've modelled a DCB specimen and applied Boundary conditions and load... I followed the same procedures given in abaqus documentation... As expected the crack initiates and propagates along the interface... I can get the Resultant force vs displacement plot from the analysis.. But i dont know how to plot the fracture toughness vs crack length plot in ABAQUS..

Please help me... Your suggestion would really help me a lot..


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