噪声与振动控制2018，Vol.38Issue(z1)：203-209,7.DOI:10.3969/j.issn.1006-1355.2018.Z1.043
主承力结构对柴油机振声响应影响规律的研究
Researches on the Influence of Primary Load-carry Structures on Noise and Vibration of Diesel Engines
李杰贵 1冯慧华 1符代桥 2朱乘军 2牟鸿飞1
作者信息
- 1. 北京理工大学 机械与车辆学院,北京 100081
- 2. 中国北方发动机研究所,山西 大同 037036
- 折叠
摘要
Abstract
The finite element model of a 12 V diesel engine is established and the frequency response of the whole machine is calculated. Combined with the AML method, the acoustic radiation prediction model of the diesel engine is established. On this basis, the calculation of the vibration response of the internal combustion engine under different design parameters of primary load-carry structures is carried out to determine the key design elements of primary load-carry structures that affect the vibration response of the internal combustion engine: the width of the main bearing housing-cap, the position of engine block’s inner side panel and the thickness of engine block’s outer side panel. At last, make response surface analysis with these key design elements. According to the results of response surface analysis, the optimum design scheme of primary load-carry structures of diesel engine obtained. Compared with the original diesel engine, the sound power level of the optimal design is 1.87 dB (A) lower than the original structure’s. In other words, the sound power of the diesel engine decreased by one third. The optimization has achieved a notable improvement.关键词
振动与波/柴油机/振动噪声/主承力结构/响应面分析Key words
vibration and wave/diesel engine/vibration and noise/primary load-carry structures/response surface analysis分类
数理科学引用本文复制引用
李杰贵,冯慧华,符代桥,朱乘军,牟鸿飞..主承力结构对柴油机振声响应影响规律的研究[J].噪声与振动控制,2018,38(z1):203-209,7.
