求各位大神帮助，用patran做模态分析报错

a2904599

nastran求解总是报错说：*** USER FATAL MESSAGE 2026 (EMG)     ELEMENT    16001 GEOMETRY YIELDS UNREASONABLE MATRIX.
*** USER FATAL MESSAGE 2026 (EMG)
     ELEMENT    16002 GEOMETRY YIELDS UNREASONABLE MATRIX.
*** USER FATAL MESSAGE 2026 (EMG)
     ELEMENT    16003 GEOMETRY YIELDS UNREASONABLE MATRIX.
*** USER FATAL MESSAGE 2026 (EMG)
     ELEMENT    16004 GEOMETRY YIELDS UNREASONABLE MATRIX.
*** USER FATAL MESSAGE 2026 (EMG)
     ELEMENT    16005 GEOMETRY YIELDS UNREASONABLE MATRIX.
*** USER FATAL MESSAGE 2026 (EMG)
     ELEMENT    16006 GEOMETRY YIELDS UNREASONABLE MATRIX.
*** USER FATAL MESSAGE 2026 (EMG)
     ELEMENT    16007 GEOMETRY YIELDS UNREASONABLE MATRIX.
*** USER FATAL MESSAGE 2026 (EMG)
     ELEMENT    16008 GEOMETRY YIELDS UNREASONABLE MATRIX.
请问有经验的前辈，这个一般怎么解决？

429110775

那么多人路过呀，看来是没交学费的原因