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LKZ

What is the different between setting group and Individual

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I have trying the analysis of pretension

 

When I set the bolt pretension of group, some bolts stress will less than the other.

 

Here is my pretension one is about 6000 N, I have 20 bolts.

 

 

 

When I separate setting in a group and individual.

 

It will like that. 

 

                                                               group                   individual

 

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Hi,

 

I think you are applying more pretension with the group and less with the individual. 

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4 hours ago, LKZ said:

I want to ask in the OptiStruct if we set the total force in group, it will automatic to average? 

No, it takes on individual nodes. 

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@Prakash Pagadala Thanks to your apply.

 

Because I see it contact force is the same so I think it is average.

 

At the other pretension I also use the total force to let it average to the other bolts.

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3 hours ago, LKZ said:

Because I see it contact force is the same so I think it is average.

 

At the other pretension I also use the total force to let it average to the other bolts.

I will investigate on a sample model and will share the results. 

 

 

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