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RAMGANESH

No Restart File error during impact analysis

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Dear All,


 


Currently i am working on the Impact analysis of the kevlar fiber which gets hits by bullet,while solving i got the Error as NO RESTART FILE.Kindly provide your guidelines.


 


Thanks 


Ram


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Hi All,


 


I am trying to assign the material properties of kevlar fibre to the shell element of thickness .57mm


Properties of  Kevlar fabric known

 

Density (g/cm3) 1.44

Modulus (GPa)  71.00

PRXY 0.20

 

In law 58 there are lot of input parameters are there what are they???

 

 

Kindly provide your guidelines

 

 

 

post-34029-0-50443500-1446461695_thumb.j

post-34029-0-60715600-1446461900_thumb.j

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Hi,


Please note that in Radioss 13.0 we have new options for LAW58.


  • non-linear stress/strain curve input for direction 1, 2, and shear
  • different FLEX parameters for different directions

  • fully integrated membranes for law58 to avoid hourglasing

I have attached userguide of Mat LAW58 for your refernce.


 


Regards


Rahul R


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Dear Sir,


 


I have remeshed the model and reduced the model to node lessthan 10000 for compatible with HW 13.0 Students edition and solved the model in Radioss ,the model get solved but the simulation is not proper the bullet is not get fired ,it is in stable position. kindly mention the error which i had done in my model ,since i get correct it and gets run the model which was developed in HW 12.0.


 


Thanks 


Ram


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Ram,


 


 


There are modelling errors.


 


Please correct them. Contact definition is not correct and also specify the right velocity

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Ram,


 


There is no contact at all..


Please go through the tutorials available on help, like this one 



RD-3510: Cantilever Beam with Bolt Pretension

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Hi,

Please check the output block defined in the model.

The error says that no variable is defined  for the Rail /TH group.

Keep Num_Variables as 1 and give the variable as DEF so that all default outputs will be extracted.

 

RAIL.PNG

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