【摘要】 考虑预处理共轭梯度法在结构静力重分析中的改进.利用增量刚度矩阵相对结构修改后刚度矩阵稀疏的特点,修改处理共轭梯度法的实施过程,以达到降低计算量、节省计算时间的目的.数值算例验证了该方法的有效性.更多还原

【Abstract】 This paper deals with the implementation of preconditioned conjugate gradient method(PCG)for structural static reanalysis.The implementation of PCG is revised by exploring sparsity of incremental stiffness matrices so that the computational cost and time can be reduced.Numerical example is given to show the effectiveness of the method.更多还原