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2D centrifugal force

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I am a new user of Hyperworks.

I want to analyze the centrifugal force and the depending stresses and displacments.

My part is a little bit like a CD. I want to this in 2D. 


My Questions>


1. Which element should i use?

2. How to create the constrains?

3. How the creat a cylindrical coordinatesystem?


Best regards 



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Hi Alex,


1) Since you want to model it 2D, better use shell elements to model.

2) You may consider constraining at the center of the rotation and apply a centrifugal force using RFORCE in OptiStruct

3) You can create systems using Systems panel

go to Analsysis>> Systems and change system type to Cylindrical 

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thanks for your fast answer...


i tried like descript it... but something must be wrong becaus i get following message>


 There were 4403 error messages during input processing.

  The first message is repeated below:


  *** ERROR # 1237 ***

  CQUAD4 element number 2 references a missing property ID 2

  or uses property of incorrect type for this element type.

  Error # 14 appeared total of 4403 times.


does anybody know where the mistake is?

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