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how to release boundary conditions in abaqus sheet metal work

 

I Nitin Bharti doing M.tech in CAD/CAM. I prepared the complete CAE file in abaqus regarding my work but  facing problem in releasing boundary Conditions  in Abaqus Sheet metal work to get final shape of job. Please help me regarding to solve this problem.


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Posted by: Nitin Bharti <nitinbharti79 <at> yahoo.in>
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Modelling using PIPE element

 

Hello Abaqus users,

I am using PIPE element in modelling a pipe elbow. The Abaqus by default consider the pipe to be closed so it results in longitudinal stresses and strains. I would like to model this elbow with open ends. Any suggestions how can i do it?
I did try adding two end forces accounting for the open end but the results are not logic since the elbow is divided into segments and each segment will be considered as a closed pipe in Abaqus.

Thank you ! 
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Posted by: Diana Abdulhameed <dabdulha <at> ualberta.ca>
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why stress change when two part not get contacted?

 

Dear abaqus users,

In my model, I need to define a surface to surface contact in abaqus\standard. I selected the finite sliding. Initially, there is a gap between the two and one supposed to get contact with another.But when my model starts to run,they seem not get touch to each other but the stress in the model change. Just wondering why does this happen. Looking for anyone to reply.Thanks.


Regards,

Vicky

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Posted by: qingqingzhaophd <at> yahoo.com
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How to change ABAQUS/Standard to ABAQUS/Explicit

 

I'm having a model in ABAQUS/Standard . I want to change them into Abaqus/Explicit to run with Subroutine VUMAT, anyone can help me ?

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Posted by: sonofgod_0910 <at> yahoo.com
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cyclic direct fatigue UMAT

 

Hi ,



Im using an UMAT coupled with step cyclic direct for  low cycle fatigue. Im writing in subroutine a damage law dependant  on cycle's time and number of cycle . 

But the problem is how i can obtain the number of cycle from the step and i call it in subroutine . 

Please can you help me !


Thanks 

Amel 

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Posted by: amel.alimi <at> yahoo.fr
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True strain/Abaqus

 

Dear Friends,


I need to find the true strain. I have the values as shown yield stress=1.619 Gpa and 0 plastic strain for elastic-perfectly plastic. 

In addition the second true stress is  10 Gpa.Im using Abaqus.So according to these values How much the value for strain ?.

The strain value should be =0.18689 according to my friend thesis. Notice He used Et/E=0.25   and E= 200 Gpa  for steel.

Your help is appreciated

Maasi


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Posted by: Maasi Al-Mayali <AL-MayaliMF <at> cardiff.ac.uk>
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Hard turning simulation

 

 Hi everybody!


   I have some broblem with simulating hard turning. Exactly with chip formation. As the tool reaches the workpiece, the workpiece behaves like rubber. It is distorted, but there isn't any chip formation process.

I use SI [meter] and Johnson-Cook model [I paid attention to changing units], and i have tried them for several materials, but the result is the same. The angular velocity of the workpiece is 800 radians/time. The velocity of the tool is 0.0005. Time period in step is 0.001. Amplitude: 0/0   0.001/1.


 So please help if you have any idea. 

 

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Posted by: pedavid01 <at> yahoo.com
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Contact/ Interaction between fiber and epoxy in modelling of composite

 

Dear All,I am new to abaqus. can any one please tel me How i can give the Contact/ Interaction between fiber and epoxy in modelling of composite.
Thank you 

[Non-text portions of this message have been removed]

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Posted by: Vinod Kumar K <vinodshetty88 <at> yahoo.in>
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Integrating Source Panel Method to ABAQUS

 

Hello everybody, I want to simulate a FSI between a beam and a axial flow. therefore the flow is implemented by the Source Panel Method. I want to implement the Source Panel Method ( its a boundary element method) into ABAQUS by using subroutines. Has anyone here already done this before or sth. similar? I already linked the Intel Fortran Compiler and Microsoft VS 2013 with ABAQUS and it works well. So if anybody has a solution or even a Fortran Code for my problem, I would be very thankful.

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Posted by: ye43leso <renglert06 <at> googlemail.com>
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using mpi4py in abaqus python

 

Hi all,

At the moment, I am doing post-processing using abaqus python. However, it is deadly slow and I am looking for a way to speed it up. I have found mpi4py a great interest, but I do not know how to install this package in abaqus python. Could somebody show me how to do that? 

Thanks in advance.

Best regards,
Ken 
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Posted by: Ken Lippmann <kenlippmann <at> gmail.com>
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How to apply a spring force to a axisymmetric rigid body

 

 Hi Abaqus Gurus, I love reading your answers to peoples questions, hopefully this is an easy one.

 

I have an explicit axisymmetric model, A rigid body punch has a spring force applied forceing the punch to stay i contact with the workpiece while the outer punch forms the workpiece. Not sure how to set this up, the few I have tryed has given me errors for needing to add mass.

 

thanks gurus i so appreciate this

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Posted by: rajuncajun1965 <at> yahoo.com
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Gmane