Ritz向量直接迭加法及其在微型机上的实现

利用 Ritz 向量直接迭加法进行动力分析通常比子空间迭代法平均要快十倍左右。尤其是 Ritz 向量法的步骤主要是一系列静力方程的求解。因此,本文应用分块外存求解器来求解大型结构的固有频率和振型是十分有效的,并且大大缩减了对内存容量的要求。对于内存很紧张的微型计算机,这一方法的优点则更为突出,以致使动力分折的容量提高了四倍左右。

Ritz Vector Direct Superposition and Implementation on Microcomputer

By using the Ritz vector direct superposion method for dynamic ana- lysis usually is average ten times faster than subspace iteration method, The procedure of Ritz vector method is mainly a series of static solving, Therefore the blocked out-of-core solver has applied quite efficiently to solve the natural frequenies and mode shapes of large structure in this pap- er and the in-core memory requirement was reduced greatly,Three program segments are set in SAP81 and run on microcomputer with critical in-core memory.The capacity of the dynamic analysis of SAP81 has arised about four times larger than before.