摘要
针对样机设计、打样阶段的空调管路出现振动、应变超标需反复整改问题,课题组通过对管路进行有限元模态仿真计算出其振型与固有频率;再进行模态测试,将仿真结果与测试值做对比,二者误差较小;通过对管路进行应力及振动测试分析,发现应力、振动的峰值点所对应的频率出现在管路固有频率附近,为共振引起。研究结果表明:在设计阶段通过有限元分析可计算出管路的模态与振型;为管路优化设计提供依据,同时节省了打样与实验成本。
In order to solve the problem that the air-conditioner pipeline should be repeatedly rectified due to vibration and excessive strain during the prototype design and proofing stage,the modal and natural frequencies of the pipeline were calculated by finite element modal simulation.The simulation results were compared with the test values by modal test,it was found that the error was small.Through the stress and vibration testing analysis of the pipeline,it was found that the frequency corresponding to the peak point of stress and vibration appeared near the natural frequency of the pipeline,which was caused by resonance.The results show that the modal and vibration modes of the pipeline can be calculated by finite element analysis in the design stage,which can not only provide a basis for the optimal pipeline design,but also save the proofing and experiment costs.
作者
蒋邹
戴隆翔
侯凯泽
罗良辰
李彬
JIANG Zou;DAI Longxiang;HOU Kaize;LUO Liangchen;LI Bin(State Key Laboratory of Air-Conditioning Equipment and System Energy Conservation,Gree Electric Appliances Inc.of Zhuhai,Zhuhai,Guangdong 519000,China)
出处
《轻工机械》
CAS
2020年第2期95-98,共4页
Light Industry Machinery
关键词
空调管路
模态
固有频率
有限元分析
air-conditioner pipeline
modal
natural frequency
FEA(finite element analysis)
