Modelling corrosion effect on stiffness of automotive suspension springs

Modelling corrosion effect on stiffness of automotive suspension springs
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模拟腐蚀对汽车悬架弹簧刚度的影响

DOI:
10.1002/mdp2.25
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发表时间:
2019
期刊:
Material Design & Processing Communications
影响因子:
--
通讯作者:
Wang Y
Wang Y
中科院分区:
--
文献类型:
--
作者:
Wang Y

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这项工作提出了一项数值研究,将腐蚀悬架弹簧的刚度变化与弹簧线材横截面损失量、表面腐蚀程度 (DSC) 和腐蚀空间分布相关联。目的是帮助人们了解腐蚀损伤特征以及对螺旋压缩弹簧负载变形行为的后续影响。开发了 3D 非线性有限元 (FE) 模型,用于模拟弹簧的机械响应并确定其老化行为。详细研究了与腐蚀深度、腐蚀空间分布和 DSC 相关的刚度变化(损失百分比)。使用专门设计的弹簧试验机进行机械测试,数据证实了有限元模型的有效性。据作者所知,已报道的工作有限,特别是在腐蚀的螺旋弹簧方面,这些工作呈现了随时间变化的刚度损失图。
This work presents a numerical investigation that correlates the stiffness changes of corroded suspension springs with the amount of spring wire's cross section loss, the degree of surface corrosion (DSC), and corrosion spatial distribution. The aim is to provide understanding of corrosion damage characteristics and subsequent effect on the load‐deflection behaviour of a helical compression spring. A 3D non‐linear finite element (FE) model was developed which is used to simulate the mechanical response of the spring and to determine its ageing behaviour. The changes in stiffness (percentage loss) in relation to corrosion depth, corrosion spatial distribution and DSC were studied in great detail. Mechanical tests were conducted using a specially designed spring testing machine and the data confirmed the validity of the FE model. To the authors' knowledge limited work has been reported, especially on corroded helical springs, that present stiffness loss diagrams as a function of time.
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