Stress-strain analysis of the tow hook of a commercial truck by numerical simulations

IF 0.6 4区 综合性期刊 Q3 MULTIDISCIPLINARY SCIENCES Acta Scientiarum-technology Pub Date : 2022-07-28 DOI:10.4025/actascitechnol.v44i1.60577
Alexandre Assis Rezende Santos, Leomar Santos Marques, M.V.T. de Moura, Ricardo Rodrigues Magalhães
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Abstract

Numerical simulations have been widely used in the industry, although with some limitations. One of these limitations is the fact that the thermal effects derived from component manufacturing processes are normally disregarded in the analysis. Thus, the main goal of this study is to evaluate strains near the weld beads of a geometric model for a truck tow hook using numerical simulations by finite element method, considering thermal loads applied before the field loading. To validate the simulation results, an experiment was performed using a tow hook found in a commercial truck. Strain gauge rosettes were placed on the body base plate, and a load of 181.050 N was applied to the hook. This loading was the result of a commercial truck being pulled on level terrain, simulating a normal operation condition of the tow hook. The Von Mises stress found in simulations was approximately 302.23 MPa at the same position where the strain gauges were glued, when the load was applied. The difference between the simulated and experimental values of the equivalent specific strains in the area of the weld beads was 19.2%, and the difference between the permanent displacement values, resulting from plastic strain, in the X-direction was 0.1%. These results justify conducting new studies involving numerical simulations and considering thermal effects on static and dynamic loads in the automotive industry.
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某商用卡车牵引钩应力-应变数值模拟分析
数值模拟已广泛应用于工业,尽管有一些局限性。这些限制之一是,在分析中通常忽略了来自组件制造过程的热效应。因此,本研究的主要目标是在考虑现场加载前施加的热载荷的情况下,利用有限元方法对卡车拖钩几何模型焊缝珠附近的应变进行数值模拟。为了验证仿真结果,使用商用卡车上发现的拖钩进行了实验。将应变计花环放置在钩体底板上,并对钩施加181.050 N的载荷。这种装载是一辆商用卡车在水平地形上被拉的结果,模拟了牵引钩的正常操作条件。当施加载荷时,在粘贴应变片的相同位置,模拟发现Von Mises应力约为302.23 MPa。焊珠区域等效比应变的模拟值与实验值的差异为19.2%,x方向上由塑性应变引起的永久位移值的差异为0.1%。这些结果证明了在汽车工业中开展涉及数值模拟和考虑静态和动态负载热效应的新研究是合理的。
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来源期刊
Acta Scientiarum-technology
Acta Scientiarum-technology 综合性期刊-综合性期刊
CiteScore
1.40
自引率
12.50%
发文量
60
审稿时长
6-12 weeks
期刊介绍: The journal publishes original articles in all areas of Technology, including: Engineerings, Physics, Chemistry, Mathematics, Statistics, Geosciences and Computation Sciences. To establish the public inscription of knowledge and its preservation; To publish results of research comprising ideas and new scientific suggestions; To publicize worldwide information and knowledge produced by the scientific community; To speech the process of scientific communication in Technology.
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