A procedure to assemble only non-zero element of a global stiffness matrix of finite element analysis in a one-dimensional array was proposed,which utilizes cell element index storage scheme.
基于细胞元索引存贮方案,提出一种仅组集有限元刚度矩阵中非零元素的方法,该方法最突出的特点是计算所需内存空间与有限元网格节点和单元的编号模式无关,适于进行自适应网格细化有限元分析。
At first,we discuss the Structure of the ring Z/(pm ),namely,the structure and amount of nilpotent elements idempotent elements, invertible elements, zero divisors and ideals in Z/ (pm).
本文先讨论了Ｚ／（ｐｍ）环的结构，如其幂零元、幂等元、可逆元、零因子和理想的结构和数量。
Rings satisfying the condition for(nilpotent element) left zorn chain;
满足(幂零元)左-Zorn链条件的环
Then we discuss the structure and the number of idempotent elements, nilpotent elements, unit element, invertible elements, zero divisors and ideals in the pq - order ring.
本文讨论了一类特殊的环-pq阶环的性质和构造,并讨论了其幂等元、幂零元、单位元、可逆元、零因子、理想的结构和数量。
Specially we identify several classes of l-rings in which the set of all nilpotent elements is an l-ideal.
研究了格序环的l-根的一些性质 ,特别给出了所有幂零元的集合是l-理想的几类格序