Negative stiffness honeycomb structure as automobile leaf spring: A numerical investigation

Q2 Materials Science

Engineering Solid Mechanics Pub Date : 2023-01-01 DOI:10.5267/j.esm.2023.5.005

Fahim Faisal Arnob, Md Sayed Anwar, M. Islam, M. Arifuzzaman, Md Abdullah Al Bari

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引用次数: 0

Abstract

The leaf spring is one of the main components in an automobile which carries the weight of the vehicle and passenger as well as absorbs the vibration and shock produced due to road irregularities. The weight, natural frequency, stress developed, energy absorption, fatigue life, etc. are the key factors that need to be considered to design a leaf spring. Towards that, a novel design integrating a Negative Stiffness Honeycomb Structure (NSHS) in the leaf spring is proposed. The proposed design and the traditional leaf spring are analyzed using the commercially available Finite Element Method (FEM) software Abaqus. Both the traditional and NSHS models were created using Solidworks and modal, harmonic, structural, and transient analyses were performed. It is found that the natural frequency of the NSHS leaf spring is well above the frequency produced due to road irregularities although it is lower than the traditional spring. The total weight of the NSHS spring structure is reduced significantly by 30.73% compared to the traditional spring. Structural analysis shows a lower stress development and higher energy absorption capacity for the NSHS leaf spring. Transient analysis reveals lower mean stress in the proposed NSHS spring. The fatigue life is also found to be 82.78 % higher in the proposed design. The NSHS-incorporated novel leaf spring design may be an excellent alternative to the traditional leaf spring.

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负刚度蜂窝结构作为汽车钢板弹簧的数值研究

钢板弹簧是汽车的主要部件之一，它承载车辆和乘客的重量，并吸收由于道路不平整而产生的振动和冲击。钢板弹簧的自重、固有频率、应力发展、能量吸收、疲劳寿命等是设计钢板弹簧时需要考虑的关键因素。为此，提出了一种将负刚度蜂窝结构(NSHS)集成到钢板弹簧中的新设计方案。利用Abaqus有限元分析软件对所提出的设计方案和传统的钢板弹簧进行了分析。使用Solidworks创建了传统模型和NSHS模型，并进行了模态、谐波、结构和瞬态分析。研究发现，NSHS钢板弹簧的固有频率虽然低于传统弹簧，但远高于道路不平整所产生的频率。与传统弹簧相比，NSHS弹簧结构的总重量显著降低30.73%。结构分析表明，NSHS钢板弹簧具有较低的应力发展和较高的能量吸收能力。瞬态分析表明，所提出的NSHS弹簧的平均应力较低。该设计的疲劳寿命提高了82.78%。结合nshs的新型钢板弹簧设计可能是传统钢板弹簧的一个很好的替代方案。

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

Engineering Solid Mechanics Materials Science-Metals and Alloys

CiteScore

3.00

自引率

0.00%

发文量

期刊介绍： Engineering Solid Mechanics (ESM) is an online international journal for publishing high quality peer reviewed papers in the field of theoretical and applied solid mechanics. The primary focus is to exchange ideas about investigating behavior and properties of engineering materials (such as metals, composites, ceramics, polymers, FGMs, rocks and concretes, asphalt mixtures, bio and nano materials) and their mechanical characterization (including strength and deformation behavior, fatigue and fracture, stress measurements, etc.) through experimental, theoretical and numerical research studies. Researchers and practitioners (from deferent areas such as mechanical and manufacturing, aerospace, railway, bio-mechanics, civil and mining, materials and metallurgy, oil, gas and petroleum industries, pipeline, marine and offshore sectors) are encouraged to submit their original, unpublished contributions.