A varying time-step explicit numerical integration algorithm for solving motion equation

被引：0
|
作者：
Zhou, Zheng-Hua [1 ,2 ]
Wang, Yu-Huan [1 ]
Liu, Quan [1 ]
Yin, Xiao-Tao [1 ]
Yang, Cheng [1 ]
机构：
[1] Inst. of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
[2] Inst. of Mechanics, Chinese Acad. of sciences, Beijing 100080, China
来源：
Acta Seismologica Sinica English Edition | 2005年 / 18卷 / 02期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1007/s11589-005-0071-3
中图分类号：
学科分类号：
摘要：
If a traditional explicit numerical integration algorithm is used to solve motion equation in the finite element simulation of wave motion, the time-step used by numerical integration is the smallest time-step restricted by the stability criterion in computational region. However, the excessively small time-step is usually unnecessary for a large portion of computational region. In this paper, a varying time-step explicit numerical integration algorithm is introduced, and its basic idea is to use different time-step restricted by the stability criterion in different computational region. Finally, the feasibility of the algorithm and its effect on calculating precision are verified by numerical test.
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页码：239 / 244
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