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ABAQUS Post processing

Submitted by tanmoy.deb@iit… on
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ABAQUS/CAE

I have modeled a pile which was made to penetrate at a constant rate (Displacement controlled loading) into the soil. The steps were divided into geostatic, contact and Applied load steps. After the program runs successfully, i am facing difficulty in extracting the results.

 I want to plot the load vs. displacement curve at the bottom of the pile.  After i have summed up all the nodal forces at the bottom of the pile, the total load was coming quite less as compared to the applied Load/Displacement.

ABAQUS Analysis

Submitted by tanmoy.deb@iit… on
research
ABAQUS/CAE

How to differentiate between the analysis of a "hollow pile with closed top and an open end" with "vented top and open ended pile".

 

After applying compressive load at both the pile tops (closed and vented), i have obtained/observed that the vented pile is offering higher resistance to penetration as compared to closed top pile.

 

ABQ Python Scripting to create mesh definition without geometry

Submitted by jo-heintz on
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Dear iMecanica community,

with ABQ I'd like to create a mesh part without an associated geometry using the bottom-up-technique.
I already found the Python commands to add nodes to an orphaned mesh (from an inp-file).
In order to this I must first import an existing part and make node definitions on the orphan mesh part.
Is there a way in ABQ to define nodes, elements, etc. directly using scripting commands without
creating an orphan mesh part (by importing a model)?

Abaqus CPU time limit

Submitted by jvo1012 on
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Hello,

I am trying to run a job for a very high resolution mesh. This job is taking many hours so I decided to allow it to run overnight. However, after about 6 hours, the job terminates due to exceeding the CPU time limit. Is there a way to set the CPU time limit to unlimited? Or are there any other workarounds that may allow me to run the job? 
 
Thanks! 

defining a response spectrum in abaqus 6.10

Submitted by Lekshmi Dinachandran on
research
ABAQUS/CAE
abaqus keywords
response spectrum

Hi,

I am trying to perform a response spectrum analysis of a tall tower. I work with abaqus 6.10, but i am unsure of how to define a spectrum. there is no spectrum radio button on the create amplitude menu... so i guess i have to edit the keywords.

does anyone have an example of how a spectrum can be defined? i'd be much grateful

Regards,

Lekshmi Remesh 

Using XFEM with Implicit Dynamic step in Abaqus

Submitted by deepak_0308 on
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xfem
ABAQUS/CAE
Implicit dynamic

Hi,

I have used XFEM in Abaqus for static analysis. I use traction-separation cohesive behavior with XFEM.

I want to use XFEM in implicit dynamic analysis. I am using Abaqus version 6.12. As far as I know xfem was allowed only with static analysis in earlier Abaqus versions (6.9). I read that the newer versions have implicit dynamic analysis compatiblity with XFEM.

Time-history analysis using substructures with ABAQUS

Submitted by sanvinsans on
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Hello,

I'm trying to use substructures to model a tall building under earthquake load. One floor is created with a substructure and the building is the pileup of a certain number of substructures. I would like to get the time history variation of fields outputs such as S and U. In my substructure definition, I have a frequency extraction step (to add generalized DOF) and a preloading step, I also ask for the damping matrix and the reduced matrix of the substructure, according to Abaqus documentation. I only get the output for the last increment, would you have any suggestion?

Dispersion curve for Lamb waves using Abaqus

Submitted by r_1159 on
software
ABAQUS/CAE
Lambwaves
Dispersion Curve

Dear all

I am trying to plot the dispersion curbve for wave propagation in an ALuminum beam under S0 and A0 lambwave.  My simulation has completed and I thin the results are reasonable as long as visualization is concerned.

I am trying to plot dispersion curve for these two waves using Abaqus outputs. As far as I know I need to use Abaqus outputs such as displacement or velocity for calculation of wave speed.

1- How would I calculate wave speed by Abaqus outputs and is this calculated wave speed the phase velocity or group velocity ?

Piezoelectric Actuator Position Constraint

Submitted by mhdiab on
ABAQUS/CAE
Hey,



I am trying to mount a piezoelectric actuator(PZT) on a plate. The PZT is rectangular and I have created a tie constraint between a surface on the bar and one of the PZT's surfaces. How do I put the PZT at a certain location on the bar in the assembly? I am assigning a coincident point position constraint between a point on the bar and a point on the PZT, is that sufficient? Thank you.



Regards.
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