How to reduce the excessive stiffness generated when a solid element imposes a constraint

yoo lin
yoo lin Altair Community Member
edited October 2020 in Community Q&A

hi all

II want to constrain the  DOF of the bolt hole，what should I do,if i use the rbe element,it would  lead to excessive stiffness problems，the other way is use rbe3 and rbe2 
element,but it have some eroors like this *** ERROR # 2110 ***
 The dependent d.o.f. is constrained by grid or spc data.
 RBE2 element id =      76740
         grid id =      14250
       component =          1.

 

 

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited July 2019

    The dependent node is constrained with SPCs which is not valid. Instead, constrain the independent node.Consider the RBE2 with only DOF in 123.

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