Journal of South China University of Technology (Natural Science Edition) ›› 2013, Vol. 41 ›› Issue (8): 99-102.doi: 10.3969/j.issn.1000-565X.2013.08.016

• Mechanics • Previous Articles     Next Articles

Constitutive Equation of Polycarbonate and Its Application to Simulation of Windshield Under Bird Impact

Han Qiang1 Yu Peng1 Yao Xiao- hu1 Zang Shu- guang2 Li Zhi- qiang3   

  1. 1.School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China;2.China Building Material Test and Certification Center,Beijing 100024,China;3.Institute of Applied Mechanics and Biomedical Engineering,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China
  • Received:2012-04-24 Revised:2012-10-31 Online:2013-08-25 Published:2013-07-01
  • Contact: 姚小虎(1974-)，男，副教授，博士生导师，主要从事冲击动力学和纳米力学研究． E-mail:yaoxh@scut.edu.cn
  • About author:韩强(1963-)，男，教授，博士生导师，主要从事领域冲击动力学和纳米力学研究．E-mail:emqhan@scut．edu．cn
  • Supported by:

    国家自然科学基金资助项目(11072166);国家国际科技合作专项(2011DFA53080);山西省高等学校优秀青年学术带头项目

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Abstract:

Based on the dynamic experiment of split- Hopkinson pressure bar (SHPB) and the static compression experiment of Instron at the room temperature,a dynamic Johnson- Cook constitutive equation of polycarbonate is proposed by using the least square and parameter identification methods to fit the corresponding constitutive parame-ters.It is found that the theoretical values accord well with the experimental ones at lower strain rates while they ac-cord well with each other only at yield points at higher strain rates.In addition,the model is employed to simulate the aircraft windshield under bird impact by using the nonlinear finite element software LS- DYNA3D.The results show that the deformations of the bird and the windshield as well as the history curve of the windshield displacement in the simulation accords well with those in the experiments.

Key words: polycarbonate, constitutive model, strain rate, windshield

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