By the principle of contragradient transformation and the static condensation in structural matrix analysis, the super_element stiffness matrices are formed, and a microcomputer program LSAP in FORTRAN language is programmed by the presented method. 通过采用结构矩阵分析中的逆步变换原理和静态凝聚方法,得到了超级单元刚度矩阵,并利用文中提供的算法编制了FORTRAN语言计算程序LSAP。
By means of contragradient transformation a method of constructing transition element satisfying the condition is presented. 利用逆步变换的概念,提出了构造能够满足该条件的过渡单元的方法。