Learning Forum

[F. Semih Y]

Computation fails with following message:

 

Element 3933 (type = 1, SOLID187) (and maybe other elements) has become 

 highly distorted.  Excessive distortion of elements is usually a        

 symptom indicating the need for corrective action elsewhere.  Try       

 incrementing the load more slowly (increase the number of substeps or   

 decrease the time step size).  You may need to improve your mesh to     

 obtain elements with better aspect ratios.  Also consider the behavior  

 of materials, contact pairs, and/or constraint equations.  Please rule  

 out other root causes of this failure before attempting rezoning or     

 nonlinear adaptive solutions.  If this message appears in the first     

 iteration of first substep, be sure to perform element shape checking.  

 

How do I apply the suggested solutions (bold)?

[peteroznewman]

To apply the load more slowly, there are two methods that you can use. See this post and the next.

Element shape checking is automatically done when meshing in Mechanical, but it is still good to see which elements are having problems with convergence. That is another change you want to make, and that is to turn on the Newton-Raphson Residual Plots.

[Keyur Kanade]

Moving to structural mechanics for better response. 

Regards,

Keyur

[Sandeep Medikonda]

In addition to what peter mentioned. Can you provide the material model and the Analysis settings you are using if you are still having problems? Here is another interesting discussion on this.

Regards,
Sandeep