基于约束力的轨道车辆空调结构振动响应预测
贾小河张瑞刚冯旭伟
Prediction for Vibration Response of Railway Vehicle Air-conditioning Structure Based on Constraint Force
JIA XiaoheZHANG RuigangFENG Xuwei
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作者信息:石家庄国祥运输设备有限公司， 050035， 石家庄
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Affiliation:Shijiazhuang King Transportation Equipment CO., Ltd., 050035, Shijiazhuang， China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.05.013
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中图分类号/CLCN:U270.38
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栏目/Col:研究报告
摘要:
［目的］空调机组作为车辆舒适性调节的重要装备，其在正常制冷运转时，压缩机和风机会产生振动，而过大的振动会引起车辆内部结构振动和噪声，进而影响人们乘坐的舒适性，因此需研究轨道车辆空调结构振动的响应问题。［方法］基于约束力理论建立相关模型；通过有限元仿真对车辆空调设计阶段可能引起的结构振动及噪声进行预测，并测试了降低车辆空调组装完成后的振动和噪声的各种工况。［结果及结论］通过仿真方法可以有效地预测空调机组在压缩机和风机激励下结构振动响应，减少空调机组装车后的车内振动问题。
Abstracts:
［Objective］ The air-conditioning unit, as an essential equipment for passenger comfort regulation in vehicles, generates vibration from the compressor and fan during normal cooling operation. Excessive vibration can lead to internal structural vibration and noise in the vehicle, thereby affecting passenger comfort. Therefore, it is necessary to study the vibration response of the air-conditioning structure in railway vehicles. ［Method］ A model based on the theory of constraint force is established. Finite element simulation is used to predict the structural vibration and noise that may occur during the design phase of vehicle air conditioning. Various operating conditions are tested to reduce vibration and noise after the assembly of the vehicle air conditioning unit. ［Result & Conclusion］ Through simulation methods, the vibration response of air-conditioning unit under the excitation of the compressor and fan can be effectively predicted, thereby reducing vibration issues inside the vehicle after the installation of the air-conditioning unit.
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