受微动疲劳影响的汽车减振器部件的设计改进

Q3 Engineering

SAE Technical Papers Pub Date : 2023-11-10 DOI:10.4271/2023-28-0157

Ashish Gorishankar Sharma, Lokavarapu Bhaskara Rao

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引用次数: 0

摘要

<div class="section摘要"><div class="htmlview段落">一辆汽车的减震器耐久性试验正在进行中，该汽车本应承受至少20万次载荷循环，但未能达到法定疲劳极限。这是由于控制减震器垫片的组件发生了故障。这种故障是由于微动疲劳引起的。一种设计改进正在引入，以避免对减震器垫片总成的微动疲劳。采用有限元分析方法对垫片总成进行了分析，确定了垫片的受力区域。在活塞上增加垫片后，疲劳寿命明显提高。阻尼力不受用于改进的基本解的影响。</div></div>

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Design Improvement of an Automotive Shock Absorber Component Subjected to Fretting Fatigue

A shock absorber endurance test for an automobile that was supposed to resist at least 200,000 load cycles but failed to meet the statutory fatigue limit was under examination. This is due to the breakdown of the assembly that holds the shock absorber shims. This failure occurred due to Fretting fatigue. A design improvement is being introduced to avoid fretting fatigue on the shock absorber shim assembly. FEA is used to investigate the shim assembly in order to locate the stress zone. After adding more shims to the piston, fatigue life was significantly improved. The damping forces were unaffected by the fundamental solution that was applied to make this improvement.

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来源期刊

SAE Technical Papers Engineering-Industrial and Manufacturing Engineering

CiteScore

1.00

自引率

0.00%

发文量

1487

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