计算物理 ›› 2000, Vol. 17 ›› Issue (S1): 54-58.DOI: 10.3969/j.issn.1001-246X.2000.01.010

• 论文 • 上一篇    下一篇

策动力下动力学初-边值问题的时域配点DQ空-时半解析法

彭建设1, 张鹰2, 杨杰3   

  1. 1. 四川师范学院物理系, 四川 南充 637002;
    2. 四川师范学院计科系, 四川 南充 637002;
    3. 武汉化工学院, 湖北 武汉 430000
  • 收稿日期:1999-05-25 修回日期:1999-10-09 出版日期:2000-12-25 发布日期:2000-12-25
  • 作者简介:彭建设(1957~),男,四川南充,教授,硕士,从事结构动力学分析的半解析研究

DQ SPACE-TIME SEMI-ANALYTIC METHOD OF DYNAMICS INITIAL-BOUNDARY VALUE PROBLEMS UNDER ALTERNATE FORCE

PENG Jian-she1, ZHANG Ying2, YANG Jie3   

  1. 1. Dept. of physics, Sichuan teachers college, Nanchong, 637002, P R China;
    2. Dept. of computer science, Sichuan teachers college, Nanchong, 637002, P R China;
    3. Wuhan Institute of chemical technology, 430000, P R
  • Received:1999-05-25 Revised:1999-10-09 Online:2000-12-25 Published:2000-12-25

摘要: 针对策动力F(x,t)=Q·sinωt作用下的一维动力学初-边值问题,直接从控制微分方程出发,提出了该计算方法。该方法在空间域采用微分积分DQ法(DifferentialQuadratureMethod),在时间域取级数,采用时域配点的方式得到求位移场全部待定参数的可解方程组,求解一次线性方程组即可求得全域的响应位移场。

关键词: 半解析法, 动力学初-边值问题, 动力响应, DQ法

Abstract: A semi-analytic method is proposed for solving dynamics initial-boundary value problems of one dimension under alternate force.It adopts differential quadrature method in space domain and series in time domain on the basis of controling partial differential equation,and gets DQ linear equations for solving all parameters of the displacement-field by adding timepoints.

Key words: semi-analytic method, dynamics initial-boundary value problem, dynamic response, DQ method

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