粘弹性基础包围GPLRC旋转盘的动力稳定性分析

IF 2.5 3区 工程技术 Q2 ENGINEERING, CIVIL
Xiujuan Liang, Haixu Ji
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引用次数: 1

摘要

本文研究了石墨烯纳米片增强复合材料旋转盘的动态稳定性分析。所提出的小尺度结构被模拟成一个双参数粘弹性衬底覆盖的圆盘。考虑了旋转引起的离心和科里奥利冲击。应力和应变采用一阶剪切变形理论(FSDT)计算。对于泊松比和不同质量密度量,采用混合规则,并插入修正的Halpin-Tsai模型来实现弹性模量。利用基于最小能量的Hamilton原理,利用GPLs增强复合材料(GPLRC)旋转盘的控制方程得到了结构的边界条件,并最终采用广义微分正交法(GDQM)进行了数值求解。利用Matlab软件绘制的曲线,解释了不同边界条件下旋转盘的动态特性。同时,对θ=π/2和θ= 3π/2边分别采用了简支边界条件,对R=Ri和R0边分别进行了悬臂梁的分析。结果表明,gpl的重量分数、粘弹性衬底、各种gpl的形状和旋转速度对GPLRC旋转悬臂盘的振幅和振动特性有显著影响。作为相关行业的适用结果,在较高的半径比的量下,纺丝速度对频率的影响更有效。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dynamic stability analysis of a rotary GPLRC disk surrounded by viscoelastic foundation
The research presented in this paper deals with dynamic stability analysis of the graphene nanoplatelets (GPLs) reinforced composite spinning disk. The presented small-scaled structure is simulated as a disk covered by viscoelastic substrate which is two-parametric. The centrifugal and Coriolis impacts due to the spinning are taken into account. The stresses and strains would be obtained using the first-order-shear-deformable-theory (FSDT). For Poisson ratio, as well as various amounts of mass densities, the mixture rule is employed, while a modified Halpin-Tsai model is inserted for achieving the elasticity module. The structure's boundary conditions (BCs) are obtained employing GPLs reinforced composite (GPLRC) spinning disk's governing equations applying principle of Hamilton which is based on minimum energy and ultimately have been solved employing numerical approach called generalized-differential quadrature-method (GDQM). Spinning disk's dynamic properties with different boundary conditions (BCs) are explained due to the curves drawn by Matlab software. Also, the simply-supported boundary conditions is applied to edges θ=π/2 and θ= 3π/2, while, cantilever, respectively, is analyzed in R=Ri, and R0. The final results reveal that the GPLs' weight fraction, viscoelastic substrate, various GPLs' pattern, and rotational velocity have a dramatic influence on the amplitude, and vibration behavior of a GPLRC rotating cantilevered disk. As an applicable result in related industries, the spinning velocity impact on the frequency is more effective in the higher radius ratio's amounts.
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来源期刊
Geomechanics and Engineering
Geomechanics and Engineering ENGINEERING, CIVIL-ENGINEERING, GEOLOGICAL
CiteScore
5.20
自引率
25.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: The Geomechanics and Engineering aims at opening an easy access to the valuable source of information and providing an excellent publication channel for the global community of researchers in the geomechanics and its applications. Typical subjects covered by the journal include: - Analytical, computational, and experimental multiscale and interaction mechanics- Computational and Theoretical Geomechnics- Foundations- Tunneling- Earth Structures- Site Characterization- Soil-Structure Interactions
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