NOTES ON THE STABILITY OF NONRECTANGULAR SPACE-TIME FINITE-ELEMENTS

被引：18

作者：

BAJER, CI ^{[1
]}

机构：

[1] INST NATL POLYTECH LORRAINE,LARAMAO,F-54042 NANCY,FRANCE

来源：

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING | 1987年 / 24卷 / 09期

关键词：

BEAMS AND GIRDERS - Vibrations - EQUATIONS OF MOTION - PLATES - STRUCTURAL ANALYSIS;

D O I：

10.1002/nme.1620240909

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The method of space-time finite elements enables the simple solution of quite new problems. It is possible to assume the arbitrary partition of the structure area in each moment of integration of the motion equation. Instability is caused by a too large time step and too great changes of joint locations in successive time steps. A changeable spatial partition is useful in contact dynamic problems, in the case of a travelling support, generally in problems with movable edges. In this paper a stability problem is described and some investigations for chosen types of non-rectangular space-time finite elements are carried out. Linear and surface elements which in time space gain an additional time dimension are presented. Some numerical examples prove the efficiency of the described method under determined limitations.

引用

页码：1721 / 1739

页数：19

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