振动
刚度
屈曲
梁(结构)
特征向量
刚度矩阵
结构工程
基础(证据)
直接刚度法
基质(化学分析)
数学
理论(学习稳定性)
正常模式
切线刚度矩阵
数学分析
工程类
材料科学
物理
计算机科学
复合材料
声学
考古
量子力学
机器学习
历史
作者
Moshe Eisenberger,J. Clastornik
标识
DOI:10.1016/0022-460x(87)90469-x
摘要
Two methods for solving the eigenvalue problems of vibrations and stability of a beam on a variable Winkler elastic foundation are presented and compared. The first is based on using the exact stiffness, consistent mass, and geometric stiffness matrices for a beam on a variable Winkler elastic foundation. The second method is based on adding an element foundation stiffness matrix to the regular beam stiffness matrix, for vibrations and stability analysis. With these matrices, it is possible to find the natural frequencies and mode shapes of vibrations, and buckling load and mode shape, by using a small number of segments. It is concluded that the use of the element foundation stiffness approach yields better convergence at lower computation costs.
科研通智能强力驱动
Strongly Powered by AbleSci AI