粘弹性动力问题中的一种新的时域递进算法

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基金项目: 教育部归国人员启动基金资助项目(1998-679)

A New Algorithm of Time Stepping in Dynamic Viscoelastic Problems

State Key Laboratory of Structural Analysis of Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116023, P R China

摘要: 提出一种新的求解粘弹性动力问题的时域递进技术,在离散时段内将各物理量展开,导出有限元形式的递推计算格式。对不同的时间步长,可做自适应计算,以保证计算精度。数值验证给出了令人满意的结果。
- 粘弹性 /
- 动力问题 /
- 有限元
Abstract: A new scheme of time stepping for solving the dynamic viscoelastic problems are presented.By expanding variables at a discretised time interval,FEM based recurrent formulae are derived. A self-adaptive algorithm for different sizes of time steps can be carried out to improve computing accuracy.Numerical validation shows satisfactory performance.
- viscoelasticity /
- dynamic problem /
- finite element

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