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首页> 外文会议>7th Biennial Conference on Engineering Systems Design and Analysis 2004(ESDA 2004) vol.1: Advanced Energy Systems; Advanced Heat Transfer in Engineering Systems; ... >COMPARING FATIGUE LIFE RELIABILITY OF A COMPOSITE LEAF SPRING WITH A STEEL LEAF SPRING
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COMPARING FATIGUE LIFE RELIABILITY OF A COMPOSITE LEAF SPRING WITH A STEEL LEAF SPRING

机译：将复合叶簧与钢质叶簧的疲劳寿命可靠性进行比较

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摘要

In the present study, the fatigue behavior of an optimized composite leaf spring and a four leaf steel spring have been analyzed and compared. In a paper, issued by co-author, a four leaf steel spring was replaced by a composite leaf spring. The geometry of composite spring has been optimized to obtain the minimum weight under stress and displacement constraints due to the given static external forces. In this study, both above-mentioned leaf springs have been fatigue analyzed. The vehicle movement has been simulated on four different standard roads in ADAMS software and the spring supports reactions have been derived. Stress time spectrum micro-blocks in critical element of leaf springs have been obtained using ANSYS software and considering ADAMS results as loading. The stress time spectrum macro-blocks for long time from the stress time spectrum in micro-blocks have been created according to statistical and random vibration principles. After finding stress probability density functions for composite leaf spring and equivalent steel leaf spring, fatigue reliabilities have been extracted for both of them. Results showed that the fatigue life reliability in composite leaf spring is much better than steel spring.
机译：在本研究中，已分析并比较了优化的复合钢板弹簧和四钢板弹簧的疲劳性能。在合著者发表的论文中，四片钢板弹簧被复合片弹簧代替。复合弹簧的几何形状已经过优化，可在给定的静态外力作用下，在应力和位移约束下获得最小的重量。在这项研究中，上述两个板簧都进行了疲劳分析。在ADAMS软件中，已在四个不同的标准道路上模拟了车辆的运动，并得出了弹簧支座的反作用力。使用ANSYS软件并考虑ADAMS结果作为载荷，获得了板簧关键元件中的应力时间谱微块。根据统计和随机振动原理，已经从微块中的应力时间谱创建了较长时间的应力时间谱宏块。在找到复合钢板弹簧和等效钢板弹簧的应力概率密度函数后，已提取了它们的疲劳可靠性。结果表明，复合板簧的疲劳寿命可靠性比钢簧好得多。

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