SIMUFACT WELDING 解答?

 PATRAN node   44345 not associated with valid element.

 PATRAN node   44346 not associated with valid element.

 PATRAN node   44347 not associated with valid element.

 PATRAN node   44348 not associated with valid element.

 PATRAN node   44349 not associated with valid element.

 PATRAN node   44350 not associated with valid element.

 PATRAN node   44351 not associated with valid element.

 PATRAN node   44352 not associated with valid element.

 PATRAN node   44353 not associated with valid element.

 PATRAN node   44354 not associated with valid element.

 PATRAN node   44355 not associated with valid element.

 PATRAN node   44356 not associated with valid element.

 PATRAN node   44357 not associated with valid element.

 PATRAN node   44358 not associated with valid element.

 PATRAN node   44359 not associated with valid element.

 PATRAN node   44360 not associated with valid element.

 PATRAN node   44361 not associated with valid element.

 PATRAN node   44362 not associated with valid element.

 PATRAN node   44363 not associated with valid element.

 PATRAN node   44364 not associated with valid element.

 PATRAN node   44365 not associated with valid element.

 PATRAN node   44366 not associated with valid element.

 PATRAN node   44367 not associated with valid element.

 PATRAN node   44368 not associated with valid element.

 PATRAN node   44369 not associated with valid element.

这是什么问题，运行刚点就出错