我建立了一个带裂缝的保持架三维实体，划分好六面体网格之后，提示

Messages for the job:

 

 *** ERROR # 163 ***

 Too many vibration modes exist in the range of interest.

  Solver error no. =    725 

        subcase id =      7 

 This error happens as there are more than 500 eigenvalues calculated

 internally in the range of interest.

 The solver may require manual input to help targeting the frequency region

 of the desired modes. Please try the following two methods:

 1) Narrow the range of interest by adjusting the lower and upper bounds.

 2) Fill the SHFSCL entry in EIGRL card with the frequency of the (estimated)

 lowest mode.

 This error was detected in subroutine eigslvextm.

模态分析中求解的特征值过多