具体错误信息如下*** ERROR # 312 *** In static load case 1 the compliance is negative or large 4.82558e+013. Optimization/buckling analysis cannot be performed. due to possible rigid body mode. FEASIBLE DESIGN (ALL CONSTRAINTS SATISFIED). *** SOME ERRORS WERE REPORTED DURING THE RUN, *** PLEASE VERIFY RESULTS AS THEY MAY BE INVALID. 有材料说是弹簧没有建好，网格划分的不是很好，节点不重合 这个模型是某大型客车的车身骨架拓扑优化，连接和约束都没有问题，拓扑优化模拟整车工况的时候，悬架没有模拟，会不会是需要模拟钢板弹簧？其次网格划分不好和节点不重合应该怎么处理呢，重新划分么？