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Nonlinear low-velocity impact analysis of temperature-dependent nanotube-reinforced composite plates

机译：温度依赖性纳米管增强复合板的非线性低速冲击分析

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摘要

A nonlinear analysis is presented for impact response of carbon nanotube-reinforced composite (CNTRC) structures under thermal conditions. Two plate configurations (i.e., single-layer and sandwich plates) are considered, and the nanotube reinforcement is either uniformly-distributed or functionally-graded in the plate thickness direction. The material properties of nanotube reinforced composites are estimated using micromechanical models. The equations of motion are based on a higher-order shear deformation theory with a von Karman-type of kinematic nonlinearity, and the thermal effects are included by considering the nanotube reinforced composites as temperature-dependent. The equations of motion are solved with a two-step perturbation technique, and the initial stresses caused by either the thermal or in-plane edge loads as in-plane boundary conditions are introduced. The influences of material property gradient, volume fraction distribution, temperature change, initial stress, initial velocity of the impactor, and core-to-face sheet thickness ratio on impact response of plate structures are discussed. The analysis presented can help better understand the nonlinear impact response of functionally-graded materials and facilitate design and optimization of nanocomposite structures against impact and under thermal and other environments.
机译：针对碳纳米管增强复合材料（CNTRC）结构在热条件下的冲击响应进行了非线性分析。考虑两种板构造（即，单层板和夹心板），并且纳米管增强物在板厚度方向上均匀分布或在功能上渐变。纳米管增强复合材料的材料性能是使用微力学模型估算的。运动方程是基于具有von Karman型运动非线性的高阶剪切变形理论，并且通过将纳米管增强复合材料视为温度相关的，从而包含了热效应。用两步扰动技术求解运动方程，并介绍了由于平面边界条件而由热或平面边缘载荷引起的初始应力。讨论了材料特性梯度，体积分数分布，温度变化，冲击器的初始应力，初始速度以及板芯对面板厚度比对板结构冲击响应的影响。提出的分析可以帮助您更好地了解功能梯度材料的非线性冲击响应，并有助于纳米复合结构的设计和优化，以抵抗冲击以及在热和其他环境下的冲击。

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  • 来源
    《Composite Structures》 |2014年第2期|423-434|共12页
  • 作者

    Zhen-Xin Wang; Jifeng Xu; Pizhong Qiao;

  • 作者单位

    State Key Laboratory of Ocean Engineering and School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao long University, Shanghai 200240, PR China,Beijing Aeronautical Science & Technology Research Institute (BASTRI), Beijing 100083, PR China;

    Beijing Aeronautical Science & Technology Research Institute (BASTRI), Beijing 100083, PR China;

    State Key Laboratory of Ocean Engineering and School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiao long University, Shanghai 200240, PR China,Department of Civil and Environmental Engineering, Washington State University, Sloan Hall 117, Pullman, WA 99164-2910, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Impact analysis; Nanotube reinforced composites; Thermal environment; Sandwich plates; Two-step perturbation technique;

    机译：影响分析;纳米管增强复合材料;热环境;夹心板;两步摄动技术;

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