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crack in abaqus

 

hello.I want to analysis a plate with a hole and crack in abaqus. in this simulation force apply to plate periodic and I want to analysis fatigue.I submit this problem but not complete so I have a appeal help me to solve and what I view result.


I am very thanks 

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Posted by: majidsede <at> yahoo.com
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Mooney-rivlin UMAT

 

I am trying to understand this UMAT(umathrt3.f) for a Mooney-rivlin material that I found in abaqus's online verification manual. I am referring to the notations and theory given in Abaqus theory manual. In their stress definition, they have a term for the pressure(PR), a term corresponding to the constant C10, but they don't use the constant C01 in their stress definition at all. Everything else fits in the definition for cauchy stress perfectly, but I couldn't figure out why this term is missing. I tried solving it by hand, but that term does not turn out to be zero either. Could anyone please help me?

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

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Posted by: Shruti Motiwale <shrutimotiwale <at> ymail.com>
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heat transfer model(iso 834)

 

hi, iam new at abaqus programe ,i do heat transfer model in the step module i but the total time 14400 sec but i didnt change the minmum and the max increment does it affect the results?
i used amplitude toolsetand i put temperature time curve (iso 834)
i choose total time ,i used absolute data , is it false or true?
in the load module , iused the amplitude (iso 834) what is the value of heat flux sufrace?

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Posted by: eng_rasharaouf <at> yahoo.com
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Video on Abaqus solver Output files generated, their use/interpretation

 

Check o ut New Video!! Use of output files generated by Abaqus solver and their interpretation for post-processing of results and error identification is narrated with an example. 
-Abaqus Acumen


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Posted by: abaqusacumen Acumen <abaqusacumen <at> yahoo.com>
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Re: What is the alternative in ABAQUS of Thin Elastic Layer in COMSOL?

 

You can use the existing feature – cohesive elements or cohesive surfaces in Abaqus (see Chapter 32.5 in user manual). If you prefer more complex (the existing elements just use linear relationships for elastic responses) behaviors, Abaqus does supply user subroutine UMAT or VUMAT to address.

 

Best regards,

Yongjin

 

------------------------------------------------------

Yongjin Guo

Materials Engineering Center

Corporate R&D, Dow Chemical

 

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Posted by: "Guo, Yongjin (Y)" <yguo3 <at> dow.com>
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Obtaining volume of an element in Abaqus

 

Like for example , we can get the element label from the following set of commands

a = mdb.models[INPName].rootAssembly

myInstance = a.instances[instanceName]

myInstance.elements[number].label gives the label..

Is there a command in Python to obtain the volume of the specified element ?

 

-Prithivi

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Posted by: prithivirajanveerappan <at> yahoo.com
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Rectangular function of time for a laser pulse

 

Dear all,

I have a problem to define a function of time for laser pulse. I use DFLUX subroutine and define the heat flux penetrate to a specimen. However I dont know how to write rectangular time function. For example, my laser is excited to specimen for 8ns. Could anyone help me on this? I really need this information. Your favor are much appreciated. Thank you.



best,
NZ


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Posted by: nazirahaw <at> yahoo.com
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Youtube video on: How to build Abaqus FE model using Hypermesh

 


We have uploaded new video on building Abaqus FE model in Hypermesh (implicit static simulation) !! This video demonstrates step by step method of setting up complete Abaqus FE model for linear static analysis using Hypermesh. 



It involves hands on exercise right from Keyword activation in Hypermesh – Load/BC definition – Property Assignment – Load step *static – output request and finally result discussion in Abaqus CAE. Once you acquire knowledge on using Hypermesh to build Abaqus model, any other complexities such as defining contact/non-linearity can be easily learnt from this background.
Best Regards,
-Abaqus Acumen
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Posted by: abaqusacumen Acumen <abaqusacumen <at> yahoo.com>
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Potential bug. How to access nodes in geometric set?

 

Hi everyone,
I am trying to specify a concentrated loads on nodes belonging to a geometric set. I can't find the named set in the list. Do I need to first export the model to an input file and then import it again to convert the geometric set to node and element set?
This seems to be a bug, according to the document:
If you create a part in CAE using geometric modeling then you can create  geometric sets containing geometric entities. After the geometric entities are meshed, ABAQUS creates sets of elements and nodes from the elements and nodes associated with the geometric entities you included in the geometric set.

Thank you for your help!
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Posted by: Qiang Fang <godblessfq <at> gmail.com>
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Element deletion in abaqus/standard in abaqus 6.14

 

Hi Abaqus users,

I've noticed that in abaqus 6.14 update ppt that element deletion in abaqus/standard can be achieved by using state variables. Anyone have tried this? It seems that in the edit material section, it is still the words - variable number controlling element deletion (abaqus/explicit only).


Looking forward for your reply.


Regards,

Qing

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Posted by: qingqingzhaophd <at> yahoo.com
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how to determine the number of damaged element?

 

greetings, 


I'm in the analysis of the damage process and may i know how to manipulated the number of damaged elements? i want to determined the percentage of volume damaged elements..


Thanks for the help. 

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Posted by: thengpin87 <at> yahoo.com
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Gmane