A strain rate-dependent analytical approach for low-velocity impact on the beam composed of silicon-nitride and stainless-steel

IF 1.4 Q2 ENGINEERING, MULTIDISCIPLINARY

World Journal of Engineering Pub Date : 2023-07-24 DOI:10.1108/wje-01-2023-0014

Mehdi Ranjbar-Roeintan

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Abstract

Purpose The purpose of this study is to investigate the strain rate effect on the problem of low-velocity impact (LVI) on a beam, including silicon nitride and stainless steel materials. Design/methodology/approach Based on the nonlinear Hertz impact mechanism, the energies related to the impactor and the beam are written, and motion equations are derived using the Lagrangian mechanics and Ritz method. The strain rate term is represented as a damping matrix in the equations of motion. In the issue of LVI on the silicon nitride and stainless steel beam, the effect of internal viscous damping coefficient in simply–simply and clamped–free boundary conditions are studied. Also, the influence of the volume fraction index in the range between zero and one and greater than one on the impact response is investigated. Findings The results make it clear that the strain rate parameter had little effect on the response in LVI. Also, an increase in the volume fraction index has led to a decrease in the contact force and an increase in the rebound velocity of the impactor. Originality/value The effect of strain rate on LVI is theoretically studied in this paper, while in most of the papers, this effect is investigated experimentally and numerically.

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氮化硅-不锈钢组合梁低速冲击的应变率相关分析方法

目的研究应变速率对包括氮化硅和不锈钢材料在内的梁低速冲击问题的影响。设计/方法/方法基于非线性赫兹冲击机构，编写了与冲击器和梁相关的能量，并使用拉格朗日力学和里兹方法推导了运动方程。应变率项在运动方程中表示为阻尼矩阵。在氮化硅和不锈钢梁上的LVI问题中，研究了在简单和夹紧自由边界条件下内部粘性阻尼系数的影响。此外，还研究了体积分数指数在0和1之间以及大于1的范围内对冲击响应的影响。结果表明，应变速率参数对LVI的响应影响不大。此外，体积分数指数的增加导致冲击器的接触力降低和回弹速度增加。原创性/价值本文从理论上研究了应变速率对LVI的影响，而在大多数论文中，这种影响是通过实验和数值研究的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

World Journal of Engineering ENGINEERING, MULTIDISCIPLINARY-

CiteScore

4.20

自引率

10.50%

发文量

期刊介绍： The main focus of the World Journal of Engineering (WJE) is on, but not limited to; Civil Engineering, Material and Mechanical Engineering, Electrical and Electronic Engineering, Geotechnical and Mining Engineering, Nanoengineering and Nanoscience The journal bridges the gap between materials science and materials engineering, and between nano-engineering and nano-science. A distinguished editorial board assists the Editor-in-Chief, Professor Sun. All papers undergo a double-blind peer review process. For a full list of the journal''s esteemed review board, please see below.