一种自适应步长的Newmark-β预测校正积分法  

Method of Predictor-corrector Newmark-β with Adaptive Step Size

作　　者：谢国伟[1] 黄亚宇[1] 

机构地区：[1]昆明理工大学机电工程学院,云南昆明650500

出　　处：《新技术新工艺》2013年第5期6-8,共3页New Technology & New Process

摘　　要：提出了一种预测校正算法,采用步长对分法将其改进成可变步长算法,这种改进算法可以使每一步的局部估计误差保持在误差限内,自动调整到经济、有效的步长[1],并给出单步计算流程图。计算实例表明,在相同的计算消耗下,变步长算法的计算精度相对常步长算法有显著的提高。A predietor-correetor method was put forward,and it was improved into adaptive step size way through step bisection method. It can obtain confine part errors of every step in error limitation,automatically adjust to economic and ef fectual step,and single step computing flow chart was given. The computing example in the paper showed that the adaptive step size method can achieved higher accuracy than that at the same computational expense.

关 键 词：Newmark—β 自适应步长 数值计算 显式法 隐式法 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]