| Dynamic Response Analysis of Bird Strike on Aircraft Windshield Based on Damage-modified Nonlinear Viscoelastic Constitutive Relation |
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| 作者姓名： | Wang Xinjun Feng Zhenzhou Wang Fusheng Yue Zhufeng |
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| 作者单位： | Department of Engineering Mechanics, Northwestern Polytechnical University, Xi ＇an 710072, China |
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| 基金项目： | 国家自然科学基金
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国家高技术研究发展计划(863计划) |
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| 摘 要： | Damage-modified nonlinear viscoelastic constitutive equation and failure criterion are introduced and the three-dimensional incremental forms are deduced based on the updated Lagrangian approach. A simple tensile test model and a split Hopkinson pressure bar model are built to verify the accuracy of the subroutine implemented within the non-linear finite element program LS-DYNA. A numerical model of bird strike on windshield is established to study the responses of windshield under three different bird velocities at three sites. The bird is represented by a cylinder with a hemisphere at each end and the contact-impact coupling algorithm is used in this study. It is found that the implemented subroutine can properly describe the mechanical behavior of polymethyl methacrylate under low and high strain rates and large deformation, and can be used validly.
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| 关 键 词： | 鸟类 非线性粘弹性构成 物质子程序 挡风玻璃 飞机事故 |
| 收稿时间： | 2007-03-28 |
| 修稿时间： | 2007-07-31 |
Dynamic Response Analysis of Bird Strike on Aircraft Windshield Based on Damage-modified Nonlinear Viscoelastic Constitutive Relation |
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| Wang Xinjun Feng Zhenzhou Wang Fusheng Yue Zhufeng.Dynamic Response Analysis of Bird Strike on Aircraft Windshield Based on Damage-modified Nonlinear Viscoelastic Constitutive Relation[J].Chinese Journal of Aeronautics,2007,20(6):511-517. |
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| Authors: | Wang Feng Zhenzhou Wang Fusheng Yue |
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| Institution: | aDepartment of Engineering Mechanics, Northwestern Polytechnical University, Xi'an 710072, China |
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| Abstract: | Damage-modified nonlinear viscoelastic constitutive equation and failure criterion are introduced and the three-dimensional incremental forms are deduced based on the updated Lagrangian approach. A simple tensile test model and a split Hopkinson pressure bar model are built to verify the accuracy of the subroutine implemented within the non-linear finite element program LS-DYNA. A numerical model of bird strike on windshield is established to study the responses of windshield under three different bird velocities at three sites. The bird is represented by a cylinder with a hemisphere at each end and the contact-impact coupling algorithm is used in this study. It is found that the implemented subroutine can properly describe the mechanical behavior of polymethyl methacrylate under low and high strain rates and large deformation, and can be used validly. |
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| Keywords: | bird strike damage-modified non-linear viscoelastic constitutive relation material subroutine windshield strain rate Constitutive Relation Viscoelastic Nonlinear Based Aircraft Bird Analysis Response mechanical behavior polymethyl methacrylate high strain rates large deformation cylinder coupling algorithm used numerical model established study different |
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