Talebizadehsardari Pouyan, Eyvazian Arameh, Musharavati Farayi, Mahani Roohollah Babaei, Sebaey Tamer A
Metamaterials for Mechanical, Biomechanical and Multiphysical Applications Research Group, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam.
Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam.
Polymers (Basel). 2020 Sep 25;12(10):2194. doi: 10.3390/polym12102194.
This work aims at analyzing elastic wave characteristics in a polymeric nanocomposite curved beam reinforced by graphene nanoplatelets (GNPs). GNPs are adopted as a nanofiller inside the matrix to enhance the effective properties, which are approximated through Halpin-Tasi model and a modified rule of mixture. A higher-order shear deformation theory accounting for thickness stretching and the general strain gradient model to have both nonlocality and strain gradient size-dependency phenomena are adopted to model the nanobeam. A virtual work of Hamilton statement is utilized to get the governing motion equations and is solved in conjunction with the harmonic solution procedure. A comparative study shows the effects of small-scale coefficients, opening angle, weight fraction, the total number of layers in GNPs, and wave numbers on the propagation of waves in reinforced nanocomposite curved beams. This work is also developed for two different distribution of GNPs in a polymeric matrix, namely uniformly distribution and functionally graded one.
这项工作旨在分析由石墨烯纳米片（GNPs）增强的聚合物纳米复合曲梁中的弹性波特性。GNPs被用作基体中的纳米填料以提高有效性能，其通过Halpin-Tasi模型和修正的混合法则进行近似。采用考虑厚度拉伸的高阶剪切变形理论以及具有非局部性和应变梯度尺寸依赖性现象的广义应变梯度模型对纳米梁进行建模。利用哈密顿原理的虚功来获得控制运动方程，并结合谐波解法进行求解。一项对比研究展示了小尺度系数、开口角度、重量分数、GNPs中的层数总数以及波数对增强纳米复合曲梁中波传播的影响。这项工作还针对聚合物基体中GNPs的两种不同分布情况展开，即均匀分布和功能梯度分布。
