哪位大神能解决一下？ 200
浏览：1207 回答：1
The lanczos solver cannot be used for buckling analysis in which a model: (1) is preloaded above the bifurcation (buckling) load, or; (2) has rigid body modes, or (3) is overconstrained or (4) contains hybrid elements or connector elements.
提示说的很清楚了，就是他说的那四种情况，不能用lanczos法求解屈曲模态，检查下模型到底是哪一种问题。