航空学报 > 1990, Vol. 11 Issue (11): 551-555

升阶谱技术在时域问题中的应用

张世基1, 刘长泓2   

  1. 1. 北京航空航天大学 ;2. 航空航天部科技情报所
  • 收稿日期:1989-10-25 修回日期:1990-05-20 出版日期:1990-11-25 发布日期:1990-11-25

THE APPLICATION OF THE HIERACHICAL FINITE ELEMENT TECHNIQUE IN THE TIME DOMAIN

Zhang Shiji1, Liu Changhong2   

  1. 1. Beijing University of Aeronautics and Astronautics;2. The Institute of Scientific and Technological Information
  • Received:1989-10-25 Revised:1990-05-20 Online:1990-11-25 Published:1990-11-25

摘要: 本文把升阶谱技术应用于时间域,建立了一种高精度的逐步积分法。它能自由地升高阶次,以满足预定的精度要求。对于一些工程问题是一种很有效的方法。Wilson-θ法及孙焕纯的改进θ法都是本文方法的特例。

关键词: 升阶谱技术, 时域有限元, 动力响应

Abstract: The hierachical finite element technique has been applied in the time domain and a step-by-step integration method with high accuracy has been developed in this paper. The degrees of the hierachical finite element can be raised freely using the technique to reach the prescribed accuracy.It is a very effective method for some engineering problems. Wilson-θ method and the Sun Huanzhun method are special cases of this method.

Key words: hierachical finite element, finite element in time do-main, dynamic response.