Journal of shanghai Jiaotong University (Science) ›› 2013, Vol. 18 ›› Issue (2): 205-215.doi: 10.1007/s12204-013-1384-3

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Development of 2D Hybrid Equilibrium Elements in Large Increment Method

Development of 2D Hybrid Equilibrium Elements in Large Increment Method

LONG Dan-binga* (龙丹冰), LIU Xi-lab (刘西拉)   

  1. (a. Department of Solid Mechanics; b. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  2. (a. Department of Solid Mechanics; b. Department of Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Online:2013-04-30 Published:2013-05-10
  • Contact: LONG Dan-binga (龙丹冰) E-mail:lornalong@sjtu.edu.cn

Abstract: As a force-based finite element method (FEM), large increment method (LIM) has been developed in recent years. It has been shown that LIM provided prominent advantage of parallel computation with high efficiency and low time consumption for member structural system. To fully utilize its advantage in parallel computation, it is the time to extend LIM to 2D and 3D continua analysis. In this paper, a 2D finite element library with the capability of modeling arbitrary configurations is developed. Some illustrative numerical examples are solved by using the proposed library; the obtained results are compared with those obtained from both traditional displacement-based FEM and analytical solutions, which has clearly shown the advantages of LIM.

Key words: large increment method (LIM)| hybrid equilibrium element| finite element method (FEM)| 2D elements

摘要: As a force-based finite element method (FEM), large increment method (LIM) has been developed in recent years. It has been shown that LIM provided prominent advantage of parallel computation with high efficiency and low time consumption for member structural system. To fully utilize its advantage in parallel computation, it is the time to extend LIM to 2D and 3D continua analysis. In this paper, a 2D finite element library with the capability of modeling arbitrary configurations is developed. Some illustrative numerical examples are solved by using the proposed library; the obtained results are compared with those obtained from both traditional displacement-based FEM and analytical solutions, which has clearly shown the advantages of LIM.

关键词: large increment method (LIM)| hybrid equilibrium element| finite element method (FEM)| 2D elements

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