立方非线性产品包装损坏边界的三维曲面表示

DAMAGED BOUNDS OF PRODUCTS PACKAGING WITH CUBICAL NONLINEARITY BY 3-D CURVE SURFACE

用三次Ｂ样条函数配点法，求得在矩形波冲击下具有立方非线性产品包装的冲击谱。讨论了软、硬非线性及外界激励幅值对产品损坏边界的影响。提出用损坏边界曲面来描述非线性产品包装的安全区域，并作出了相应的损坏边界曲面．

ased on the cubical B-spline collocation method, shock spectrs of products packaging with cubical nonlinearity under rectangular wave shock were obtained and then the effects of stiff nonlinearity,flexible nonlinearity and excitationamplitade on damaged bounds were discussed.The method of describing safety district of products packaging with cubical nonlinearity by damaged bounds curve surface was presented and then the related damaged bounds curve surfaces were given.