Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (5): 139-144.doi: 10.3969/j.issn.1000-565X.2013.05.022

• Automotive Engineering • Previous Articles    

Simulation of Impact Fracture Process of Laminated Glass Beam Based on Cohesive Model

Gao Wei1 Zang Meng-yan1,2   

  1. 1.School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China;2.State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Hunan University,Changsha 410082,Hunan,China
  • Received:2012-09-17 Revised:2013-01-07 Online:2013-05-25 Published:2013-04-01
  • Contact: 臧孟炎(1961-)，男，教授，博士生导师，主要从事汽车CAE 技术及其应用研究． E-mail:myzang@scut.edu.cn
  • About author:高伟(1984-)，男，博士生，主要从事汽车被动安全研究．E-mail:hbweigao@126．com
  • Supported by:

    国家自然科学基金资助项目( 11172104， 10972079) ; 国际科技合作项目( 2008DFA51740) ; 汽车车身先进设计制造国家重点实验室开放基金资助项目( 31015003)

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Abstract:

In order to simulate the impact fracture process of laminated glass beam,a fracture model suitable for 3Dspherical discrete elements is proposed based on the basic concept of the cohesive model commonly used in the finiteelement method ( FEM) .In this model,the interactions between two discrete elements are divided into threetypes,namely the connection,the cohesion and the contact.When the fraction meets the criterion,the interactionbetween the corresponding discrete elements changes from the connection to the cohesion,and the cohesive tractionis obtained from the opening displacement of the corresponding elements.The constructed model is then implementedin a self-developed discrete element /finite element coupling program CDFP,and the impact fracture process ofthe laminated glass beam is finally simulated.The results show that the simulated fracture mode accords well withthe experimental one,which means that the proposed fracture model and the adopted simulation method are botheffective.

Key words: laminated glass, impact fracture, cohesive model, finite element, discrete element

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