高速动车组制动夹钳结构振动失效模式及机理研究
曾梁彬杜利清
Research on Structural Failure Mode and Failure Mechanism of High-speed EMU Brake Caliper under Vibration
ZENG LiangbinDU Liqing
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作者信息:中车戚墅堰机车车辆工艺研究所有限公司， 213011， 常州
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Affiliation:CRRC Qishuyan Institute Co., Ltd., 213011, Changzhou, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2021.08.017
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中图分类号/CLCN:U266.235
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栏目/Col:研究报告
摘要:
利用线性动力学分析方法，获得了随机振动工况下高速动车组制动夹钳结构的应力响应分布并识别了失效风险位置。通过对失效风险位置进行应力功率谱分析，并结合线性累积损伤理论，预测了制动夹钳的失效模式。设计了相应的增强幅值随机振动破坏性实物试验，加速暴露了制动夹钳的结构失效，验证了理论分析结论的正确性，并进一步分析了结构失效机理。
Abstracts:
Linear dynamics analysis method is adopted to obtain stress distribution of high-speed EMU brake caliper structure under random vibration and to identify high failure risk points. By conducting PSD (power spectrum density) analysis on high failure risk points, according to linear cumulative damage hypothesis, the caliper structural failure modes are predicted. A destructive test of physical objects under random vibration with corresponding enhanced amplitude is designed to accelerate the exposure of structural failure, verifying conclusions from the theoretical analysis, and further discussing the failure mechanism.
引文 / Ref:
曾梁彬，杜利清.高速动车组制动夹钳结构振动失效模式及机理研究[J].城市轨道交通研究，2021，24(8):79.
ZENG Liangbin，DU Liqing.Research on structural failure mode and failure mechanism of high-speed EMU brake caliper under vibration[J].Urban Mass Transit，2021，24(8)：79.
ZENG Liangbin，DU Liqing.Research on structural failure mode and failure mechanism of high-speed EMU brake caliper under vibration[J].Urban Mass Transit，2021，24(8)：79.
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