Aerospace Science and Technology ( IF 5.6 ) Pub Date : 2020-05-12 , DOI: 10.1016/j.ast.2020.105860 Wenliang Gao , Zhaoye Qin , Fulei Chu
This paper studies wave propagation in functionally graded metal foam plates reinforced with graphene platelets (GPLs), where various types of porosity and GPL distribution are taken in account. The Halpin–Tsai model is employed to express the material properties of metal foam plates reinforced with GPLs. The governing equations of wave propagation in metal foam plates are derived by Hamilton's principle together with different plate theories, upon which wave dispersion relations in plates are achieved. Then, the validation of proposed model is examined by comparing the natural frequencies calculated in present study and those from literature. Finally, the effects of porosity and GPL distributions, porosity coefficient, GPL volume fraction and geometry on wave dispersion relations are evaluated.
中文翻译:
波在石墨烯增强的功能梯度多孔板中的传播
本文研究了功能梯度金属石墨板(GPL)增强中的波传播,其中考虑了各种类型的孔隙率和GPL分布。Halpin–Tsai模型用于表达由GPL增强的金属泡沫板的材料性能。利用汉密尔顿原理和不同的板理论推导了金属泡沫板中波的传播控制方程,从而得出了板中波的色散关系。然后,通过比较本研究中计算出的固有频率和文献中的固有频率,检验所提出模型的有效性。最后,评估了孔隙度和GPL分布,孔隙度系数,GPL体积分数和几何形状对波频散关系的影响。