汽车前悬架复合椭圆弹簧元件的疲劳研究

S. M, Niresh J
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引用次数: 0

摘要

对复合椭圆弹簧单元进行了疲劳研究。在疲劳试验的初始阶段,观察到一个共同的趋势是轻微的刚度降低,随后在中间阶段(103-105次循环)出现较高的刚度降低率。在105次循环以上,发现刚度降低不那么严重。与UDR/WRM层压型1型配置的弹簧元件相比,UDR配置的弹簧元件的疲劳性能一直较差。经CTBN改性的弹簧元件比未改性的弹簧元件具有更好的疲劳性能。疲劳研究表明,挠度上限应仅为25mm。在30毫米的挠度水平下,观察到两个弹簧元件的刚度降低非常严重。具有15% CTBN改性基体和层合1型结构的弹簧元件具有最佳的疲劳特性。在100万次循环结束时,刚度降低了22%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fatigue Studies on Composite Eliptic Spring Elements for Automotive Front Suspension
Composite Elliptic spring elements were subjected to fatigue studies. A common trend of mild stiffness reduction during the initial stages of fatigue tests followed by a higher stiffness reduction rate during the intermediate stage (103-105 cycles) was observed. Above 105 cycles the stiffness reduction was found to be less severe. The fatigue performance of the spring elements having UDR configuration was always found to be poor compared to the ones having UDR/WRM laminated type-1 configurations. The spring elements having CTBN modified matrices were found to give superior fatigue performance than the unmodified matrix spring elements. The fatigue studies reveal that the upper limit of the deflection should be only 25 mm. At 30 mm deflection levels the stiffness reduction of both the spring elements were observed to be very severe. The spring element having 15% CTBN modified matrix and laminate type-1 configuration gave the best results with respect to the fatigue characteristics. The stiffness reduction at the end of 1 million cycles was found to be 22 %..
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