整车不平度粗糙路面仿真

johnson10533

各位网上的先进您好!小弟有个问题困扰了很久

是这样的我整车模型在行进国家标准的B.C.D粗糙路面(使用road builder输入空间频率建立路面)

B级路面40~60km/h都还算顺利，但C级路面就会开始有计算错误的警告，但透过更改Bushing和joint的作动关系可改善

但在更高时速就会错误，无法完成整个仿真。以下是错误的资讯
--------------------------------------------------------------------------------------------------------------------------------------------------------
STFINT:MIN_STEP_SIZE  HMIN=1.000000000E-08; Reached At Time=1.192683256E+00.  
  The integrator could not advance the simulation.
  An attempt to further decrease the integration step-size failed.  
  Suggested course of action:
  1. Decrease the value of HMIN.
  2. Relax the accuracy requirements (ERROR) on the integrator.
  3. Increase the number of iterations allowed for convergence.
  4. Revisit the way the mechanical system has been modeled.
  Last good step-size: 1.488180362E-08.
---- START: ERROR ----
   Time T=1.192683271E+00.
   Adams can not solve the equations of motion because the mechanism has
   "locked up".  At least one constraint can no longer be satisfied.
   Adams is unable to satisfy the constraint for:  SphJnt/15 Y Delta.

---- END: ERROR ----


想请问先进，是悬吊部份的接头部份没设定好(bushing、joint、bumpstop、rebumpstop)，还是是整体机构有问题所造成的错误?

谢谢大家!

David_li

虽然不懂，但是很感兴趣的，望高手来解答~

jiejiaodefengye

A 、B、C级路面怎么建立