Nonlinear low-velocity impact response of functionally graded plate with nonlinear three-parameter elastic foundation in thermal field

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• 作者：F. Najafi^a ; M.H. Shojaeefard^b ; H. Saeidi Googarchin^a ; ^{hsaeidi@iust.ac.ir" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Nonlinear impact response ; Functionally graded material ; Nonlinear three-parameter elastic foundation
• 刊名：Composites Part B: Engineering
• 出版年：2016
• 出版时间：15 December 2016
• 年：2016
• 卷：107
• 期：Complete
• 页码：123-140
• 全文大小：2890 K

文摘

In this paper a nonlinear investigation is presented for impact response of functionally graded material plates which are resting on a nonlinear three-parameter elastic foundation with simply supported end condition. In foundation, the influence of linear Winkler and Pasternak parameter is taken into account. The governing equations of the plate are derived based on a Reddy's higher order shear deformation theory with the von Kármán-type of kinematic nonlinearity. The effect of thermal field is considered and material properties of the plates are assumed to be temperature dependent, as well and vary along the thickness according to Voigt model. In addition, by using a modified Hertz's contact law, the influence of material properties of the substrate layers on impact response is considered. The equations of motion are solved via an analytical procedure. The effects of deformation theories as well as thermal field, foundation parameters and impactor's parameters are discussed in results and discussion section.