workbench齿轮瞬态动力学分析

错误提示是

The solver engine was unable to converge on a solution for the nonlinear problem as constrained.  Please see the Troubleshooting section of the Help System for more information.

solution information里面的error是

 One or more elements have become highly distorted.  Excessive          
 distortion of elements is usually a symptom indicating the need for    
 corrective action elsewhere.  Try ramping the load up instead of step  
 applying the load (KBC,1).  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.  If this     
 message appears in the first iteration of first substep, be sure to    
 run shape checking of elements.   

求大神帮助，谢谢