Simplified Model and Response Analysis for Crankshaft of Air Compressor

2017 4th International Conference on Advanced Materials, Mechanics and Structural Engineering

材料科学;机械制造

Li, Chao-Bo^1 ; Lou, Jing-Jun^2 ; Zhang, Zhen-Hai^2

College of Power Engineering, Naval Univ. of Engineering, Wuhan

430033, China^1

National Key Laboratory on Ship Vibration and Noise, Naval Univ. of Engineering, Wuhan

430033, China^2

关键词: Calculation precision;    Calculation speed;    Constraint conditions;    Experimental modes;    Process of manufacture;    Reference points;    Response analysis;    Vibration response;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/269/1/012035/pdf
DOI  :  10.1088/1757-899X/269/1/012035

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The original model of crankshaft is simplified to the appropriateness to balance the calculation precision and calculation speed, and then the finite element method is used to analyse the vibration response of the structure. In order to study the simplification and stress concentration for crankshaft of air compressor, this paper compares calculative mode frequency and experimental mode frequency of the air compressor crankshaft before and after the simplification, the vibration response of reference point constraint conditions is calculated by using the simplified model, and the stress distribution of the original model is calculated. The results show that the error between calculative mode frequency and experimental mode frequency is controlled in less than 7%, the constraint will change the model density of the system, the position between the crank arm and the shaft appeared stress concentration, so the part of the crankshaft should be treated in the process of manufacture.