Ansys 16.0 convergence issue

• Jan 12, 2018

• #2

goeasyon

Mechanical

Jun 15, 2007

55

Try the frictionless contact see if the convergence gets better. The frictional contact algorithm is much more complicated than the frictionless.

https://welsim.com

 

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• Jan 12, 2018

• #3

scheah

Structural

Jan 17, 2017

178

Code:

Error 	An internal solution magnitude limit was exceeded.

It appears something is flying off into space. Try verifying your model is well constrained by the contacts and look at the contact status of your model.

This thread might help: [URL unfurl="true"]http://www.eng-tips.com/viewthread.cfm?qid=429795[/url]


Kind regards,
Jason

 

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• Jan 12, 2018

• #4

arnie333

Mechanical

May 26, 2002

19

You mention a pin in your model...did you restrict its translational freedom and only allow rotation along its length axis ?

 

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• Jan 13, 2018

• #5

scheah

Structural

Jan 17, 2017

178

The pin in the example model was restricted in translation but it doesn't have to be. You could restrain it from translating axially in the first load step while applying other external loads then let it free in the second load step.


Kind regards,
Jason

 

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• Jan 13, 2018

• Thread starter
• #6

Jandra11

Structural

Jun 18, 2017

109

first of all thanks for all the inputs.
@goeasyon if i use friction less contact there will be no force that can resist the rotating of the pin support
@sk ill check it thank you. this is the contact status. to make it short the top to base base to pin and top to pin are all frictional.

i dont get your last comment can you explain it further actually there a shear load that i didnt put in the model yet so there is no axial force on the pin
@arnie how do you do that i just off the pivot checking

 

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• Jan 13, 2018

• Thread starter
• #7

Jandra11

Structural

Jun 18, 2017

109

btw how can i post the ansys file here ?

 

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• Jan 13, 2018

• Thread starter
• #8

Jandra11

Structural

Jun 18, 2017

109

a

 

 http://files.engineering.com/getfile.aspx?folder=82ec384b-55fb-4963-9847-96f16599a4a2&file=presentation.wbpj

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• Jan 13, 2018

• Thread starter
• #9

Jandra11

Structural

Jun 18, 2017

109

this one i hope you can enlighten me on how to model it properly. thank you in advance

 

 http://files.engineering.com/getfile.aspx?folder=ae5d440a-93ca-4724-befc-29f96a9699e5&file=Desktop.rar

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• Jan 13, 2018

• #10

L_K

Structural

Sep 22, 2016

267

Think about the reality. Is there enough friction force in your model to keep it not flying off to space?

 

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• Jan 13, 2018

• Thread starter
• #11

Jandra11

Structural

Jun 18, 2017

109

@lk I remodel it and it converge but i remove the side cover just the pin bar in the model and all connection are frictional. but when i try to model it considering the shear force and put the side cover the error and warnings come again.

 

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