ls-dyna计算出错？ 20

 Checking PART and SECTION definition input.

 *** Error PART      ID         2  with

           SECTION   ID         2  does not exist.

           This is PART         1  in the order of input.

 Checking PART and SECTION definition input.

 *** Error PART      ID         3  with

           SECTION   ID         2  does not exist.

           This is PART         2  in the order of input.

 *** Error input data failed with:         2 errors

 E r r o r   t e r m i n a t i o n