摘要
现有有限条法选用特殊的位移插值函数,不能方便地描述曲线截面的几何特征,在分析两端支承圆柱壳时,只能将壳体看成折板结构,要提高分析的精度势必要求很细的网格.本文对条横截面几何特征用与位移相同的插值函数描述,建立了曲截面三维退化有限条.该条能方便地克服现有条的缺点.
The formula of 3D degenerated cylindrical shell strip with curved section is derived,which overcomes the shortcomings that current strips can not easily deal with curved section.When plates and shells become very thin,the numerical behaviour of the strip is investigated,which includes shear lock,singularity of shear stiffness matrix and spurious zero energy modes due to applicatoon of reduced integration.A numerical example is geven.
出处
《东南大学学报（自然科学版）》
EI
CAS
CSCD
1993年第4期114-117,共4页
Journal of Southeast University：Natural Science Edition
基金
国家自然科学基金
关键词
曲截面
圆柱壳
有限条法
finite strip method
stress analysis
degenerated element
cylindrical shells
