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总览 评价 王瑞霞 , 敬霖 , 王志华 * , 赵隆茂 ( 太原理工大学应用力学与生物医学工程研究所; ) 摘要: 本文分析了大挠度情况下简支夹芯圆板在准静态中心荷载作用下的承载能力。提出了考虑芯层强度影响的夹芯结构屈服条件,应用该条件,并基于边界条件
王瑞霞, 敬霖, 王志华*, 赵隆茂
(
太原理工大学应用力学与生物医学工程研究所; )
摘要:
本文分析了大挠度情况下简支夹芯圆板在准静态中心荷载作用下的承载能力。提出了考虑芯层强度影响的夹芯结构屈服条件,应用该条件,并基于边界条件和平板的初始变形机制假设夹芯板的速度场,推导了夹芯圆板考虑弯曲和膜力联合作用的大挠度响应,并应用数值算例验证了分析模型的合理性,在此基础上,分析和讨论了面板厚度、芯层厚度和芯层强度对夹芯圆板承载能力的影响。
关键词:
夹芯圆板;大挠度;泡沫金属;屈服准则
wang ruixia 1,, JING lin2,, wang zhihua 3,*, ZHAO Longmao2,
(
1、Institute of Applied Mechanics and Biomedical Eengineering, TUT; 2、Institute of Applied Mechanics and Biomedical Eengineering, TUT, Taiyuan 030024,China; 3、Applied Mechanics and Biomedical Eengineering, TUT; )
Abstract:
This paper is concerned with the load-carrying capacity of circular sandwich panels subjected to central quasi-static loading. The panel consists of two metallic face-sheets and a core made from metallic foam, and is simply supported at the edges. The analysis is based on a newly developed yield criterion for the sandwich cross section. The large deflection response is estimated by assuming a velocity field, which is defined according to the initial deformation mode of flat panel and the boundary condition. A finite element simulation has been performed to validate the analytical solution. A parametric study is then carried out to examine the structural response. Good agreement confirms that the quasi-static behavior of circular sandwich plates is well captured by the analytical model.
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