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刚性接触网悬挂结构刚度识别方法
Authors
张玲芳
杨国伟
+3 more
程桂军
纪占玲
黄国君
Publication date
15 November 2021
Publisher
Abstract
接触网-受电弓系统是列车运行驱动力的来源。相比于柔性接触网,刚性接触网因其净空低、坚固耐用、抗风性好等优点一直是当前研究的热点。针对刚性接触网悬挂结构的传统建模方法是将其等效成弹簧结构,并根据能量守恒对其刚度进行等效。基于此,提出一种基于遗传算法的利用刚性接触网的实验模态信息识别建模参数的新方法,建立刚性接触网仿真模型新的验证和修改方法,设计若干常见工况对本方法的可行性进行验证。研究结果表明:本方法因其对结构刚度的敏感性,不仅可识别刚性接触网悬挂结构刚度,而且当悬挂结构损伤时,能够识别到悬挂结构弹簧的损伤位置和实际有效刚度值。经验证在常见工况下,该方法识别到刚度值的平均相对误差低于5%
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Institute Of Mechanics,Chinese Academy of Sciences
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Last time updated on 09/06/2022