航空学报 > 1998, Vol. 19 Issue (1): 87-90

基于非协调模式的几何非线性广义杂交退化壳单元

郑世杰1, 朱德懋1, 陈万吉2   

  1. 1. 南京航空航天大学振动工程研究所, 南京, 210016;2. 大连理工大学工程力学系, 大连, 116023
  • 收稿日期:1997-01-02 修回日期:1997-08-30 出版日期:1998-02-25 发布日期:1998-02-25

GEOMETRICALLY NON LINEAR GENERALIZED HYBRID DEGENERATED SHELL ELEMENT BASED UPON NON CONFORMING MODES

Zheng Shijie1, Zhu Demao1, Chen Wanji2   

  1. 1. Institute of Vibration Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing, 210016;2. Department of Engineering Mechanics, Dalian University of Technology, Dalian, 116023
  • Received:1997-01-02 Revised:1997-08-30 Online:1998-02-25 Published:1998-02-25

摘要:

依据一个在局部坐标系下放松单元间连续性要求的广义变分原理,建立了基于非协调模式的几何非线性广义杂交退化壳单元。数值结果表明,构造的四结点退化壳元拥有很好的性能,可避免各种自锁问题。

关键词: 几何非线性, 非协调模式, 广义杂交退化壳

Abstract:

According to a generalized variational principle, which relaxes the inter element continuity requirements, a generalized hybrid degenerated shell element was first formulated by introducing incompatible modes. Numerical examples demonstrate that the four node degenerated shell element proposed in this article has excellent performance and can avoid all kinds of locking problems.

Key words: geometrically non-linear ity, incompatible modes, gener alized hybr id degener atedshell element

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