Jump to content

Aalen

Members
  • Content Count

    4
  • Joined

  • Last visited

About Aalen

  • Rank
    Newbie

Profile Information

  • Are you University user?
    Yes

Recent Profile Visitors

631 profile views
  1. Aalen

    Error 312

    Hello again, thanks to Rahul and Grasmannsdorf ! We have changed the load. That was the mistake: Be aware that applying e.g. 200N to 1800 nodes meany you apply a load of 1800 x 200N = 360000 N (36 tons). And we also used the RBE3 element. After all we got the results we wanted. Thanks
  2. Aalen

    Error 312

    OK, files are uploaded. Subject: Error 312
  3. Aalen

    Error 312

    Hello, First of all, thanks for the fast response! We have tried to improve our optimization like your instructions. But we still get the same error. In the following link you will find two .hm files. The first one is the originally file. (subframe_hinterachse_Netz_entfernt_mit_eigengewicht6.02_3.hm) And the second one is the file that we had improved. (subframe_hinterachse_beidseitige_Kraefte_mit_Diff_Kraefte_2.hm) https://www.dropbox.com/sh/ys1qggvd4ctvnco/AABhUa333sGaV1ACRKYDq1maa?dl=0 It would be very nice if someone could have a look at the files. We have some more questions: - How can we adjust the range of the regulator in the ISO Menu in HyperView. We want to look for a larger range - How can we define, that some parts of the component are not optimized. In our example we want to keep the flaps in the originally shape. Thanks in advance!
  4. Hi, during the second Iteration, Optistruct shows following Error Message: ITERATION 2 *** ERROR # 312 *** In static load case 1 the compliance is negative or large 6.051219E+09 Optimization/buckling analysis cannot be performed due to possible rigid body mode Objective Function (Minimize VOLUM) = 4.13553E+06 % change = -36.03 Maximum Constraint Violation % = 0.67867E+06 Design Volume Fraction = 4.95356E-01 Mass = 1.11659E+01 Subcase Compliance 1 6.051219E+09 And on the last page of the report, the same Error is shown: A fatal error has occurred during computations: *** ERROR # 312 *** In static load case 1 the compliance is negative or large 6.051219E+09 Optimization/buckling analysis cannot be performed due to possible rigid body mode INFEASIBLE DESIGN (AT LEAST ONE CONSTRAINT VIOLATED). Does anybody know how to avoid this Error? And what it means? With only one Iteration during calculation, the Error does not occur!? Thanks for your help!
×
×
  • Create New...