On the studying course of bottle structure flexure ,gain the loads and mode through extract the systematic eigenvalue,loads and placement-laods curves by relating to the non-linearity effects.

• 在研究瓶体结构屈曲过程中，通过提取系统的特征值获得结构的载荷及模态。在计及非线性影响的情况下，得到载荷和位移-载荷曲线。