| 模拟结构倒塌破坏的有限质点法 |
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| 引用本文： | 喻莹,朱兴一,罗尧治.模拟结构倒塌破坏的有限质点法[J].计算力学学报,2014,31(4):495-500. |
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| 作者姓名： | 喻莹 朱兴一 罗尧治 |
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| 作者单位： | 汕头大学 工学院土木系, 汕头 515063;同济大学 道路与交通工程教育部重点实验室, 上海 200092;浙江大学 空间结构研究中心, 杭州 310027 |
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| 基金项目： | 国家自然科学基金（51108257，11102104）；广东省高等学校优秀青年教师计划（YQ2013071）；教育部博士点基金（20114402120001）；广东高校优秀青年创新人才培养计划（LYM11065）；汕头大学科研启动基金（NTF10025）资助项目. |
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| 摘 要： | 有限质点法是以向量式力学为基础的新兴结构分析方法,本文将其应用于冲击荷载作用下的网壳结构的倒塌破坏模拟中。以空间杆单元为例建立了有限质点法的基本方程,推导了求解几何和材料非线性问题的基本公式。为计算断裂问题,建立了空间杆单元的断裂准则和断裂模型,发展了有限质点法进行断裂分析的基本算法。通过对某双层网壳冲击荷载下破坏过程的模拟和分析,验证了该方法在结构倒塌破坏过程模拟中的有效性和适用性。
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| 关 键 词： | 有限质点法 网壳 倒塌模拟 |
| 收稿时间： | 2013/2/11 0:00:00 |
| 修稿时间： | 2013/8/18 0:00:00 |
Finit particle method for structural collapse simulation |
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| YU Ying,ZHU Xing-Yi and LUO Yao-zhi.Finit particle method for structural collapse simulation[J].Chinese Journal of Computational Mechanics,2014,31(4):495-500. |
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| Authors: | YU Ying ZHU Xing-Yi and LUO Yao-zhi |
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| Institution: | Department of Civil Engineering, Shantou University, Shantou 515063, China;Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 200092, China;Space Structure Research Center of Zhejiang University, Hangzhou 310027, China |
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| Abstract: | The Finite Particle Method (FPM) is a new structural analysis method based on the Vector Mechanics.This paper explores the possibility of the proposed method being applied in collapse process analysis of double-layer reticulated domes subjected to impact loads.Taking the three dimensional bar element as an example, the theoretical fundamentals of the FPM are given.The formulations to calculate geometric and material nonlinear problems are derived.The fracture criterion, fracture model and corresponding algorithm are developed to simulate fracture of structural members.The collapse process of a double-layer reticulated dome subjected to impact loads is simulated and analyzed to demonstrate the applicability of this method in dynamic nonlinear analysis. |
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| Keywords: | Finite Particle Method reticulated dome collapse simulation |
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