Transient responses of functionally graded double curved shallow shells with temperature-dependent material properties in thermal environment
Transient responses of functionally graded double curved shallow shells with temperature-dependent material properties in thermal environment
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DOI：
10.1016/j.euromechsol.2014.03.002
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发表时间：
2014-09
影响因子：
4.1
通讯作者：
N. D. Duc;T. Q. Quan
中科院分区：
文献类型：
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作者：
N. D. Duc;T. Q. Quan
采用简单幂律分布（P-FGM），研究了弹性地基上偏心加筋功能梯度材料双曲扁壳在热环境下的非线性动力响应和振动问题。该公式是基于经典的壳理论，考虑到几何非线性，初始几何缺陷，温度依赖性和Lekhnitsky涂抹加劲肋技术与Pasternak型弹性基础。应用伽辽金法，利用应力函数，得到了简支偏心加筋功能梯度材料曲壳的热载荷-挠度曲线的显式关系。分析和讨论了材料和几何特性、温度、弹性地基和偏心加劲肋对非理想偏心加筋P-FGM双曲扁壳在热环境下动力响应和振动的影响。本文的数值结果与其他出版物中报道的结果进行了比较。
An analytical approach is presented to investigate the nonlinear dynamic response and vibration of imperfect eccentrically stiffened FGM double curved thin shallow shells on elastic foundation using a simple power-law distribution (P-FGM) in thermal environment. The formulations are based on the classical shell theory taking into account geometrical nonlinearity, initial geometrical imperfection, temperature-dependent properties and the Lekhnitsky smeared stiffeners technique with Pasternak type elastic foundation. By applying Galerkin method and using stress function, explicit relations of thermal load-deflection curves for simply supported curved eccentrically stiffened FGM shells are determined. Effects of material and geometrical properties, temperature, elastic foundation and eccentrically stiffeners on the dynamic response and vibration of the imperfect eccentrically stiffened P-FGM double curved shallow shells in thermal environments are analyzed and discussed. The numerical results in this paper are compared with results reported in other publications.