系统模态对空调压缩机支架强度的影响
2019-10-21宋太安曹权佐胡志刚李晓磊张兆奎
宋太安 曹权佐 胡志刚 李晓磊 张兆奎



摘 要:文章以对东安汽发汽油发动机空调压缩机支架结构优化为实例,通过CAE对空调压缩机、空调压缩机支架及轮系组成的系统进行模态分析,根据CAE分析结论对空调压缩机支架进行结构优化,介绍了系统模态对空调压缩机支架结构强度的影响。优点如下:①CAE模态分析有效的分析出空调压缩机支架在动态载荷下变形趋势;②通过分析结论对空调压缩机支架进行结构优化,有效的提高空调压缩机结构强度,提高其工作可靠性,缩短了设计周期。
关键词:模态分析;动态载荷;结构强度
中图分类号:U463.85+1 文献标识码:A 文章编号:1671-7988(2019)12-127-03
Abstract: This paper takes the structure optimization of air compressor bracket in Dongan automotive gasoline engine as an example, Modal analysis is carried out through CAE analyses system, which consist of train、air conditioning compressor and air conditioning compressor bracket, and optimize the structure of the air conditioning compressor bracket based on the conclusion of CAE. Introduces the influence of mode analysis on the strength of air conditioning compressor bracket. The advantages are as follows: ①CAE modal analysis can analyses the deformation tendency of the air conditioning compressor bracket under a dynamic load effectively. ②By optimizing the structure of the air conditioning compressor bracket based on the conclusion of analysis, improve the structural strength of the air conditioning compressor effectively, improve the reliability, shorten the designing period.
Keywords: modal analysis; dynamic load; structural strength
引言
对于汽车发动机上的空调压缩机支架类零件,不仅要考虑其静态载荷,还要分析其动态载荷。空调压缩机支架结构不仅影响其可靠性,还决定了系统运行过程中振动与噪声的大小。高强度与轻量化是衡量支架类零件的两个重要标准,要同时满足上述两个条件,就需要在结构方面进行合理的优化。
东安汽车发动机制造有限公司设计人员(以下简称东安汽发)为提高发动机空调压缩机支架强度及其可靠性,根据CAE分析法对空调压缩机系统模态分析结果,对空调压缩机支架进行结构优化,提高空调压缩机支架工作可靠性。
1 空调压缩机支架结构优化
本次分析对象以我司某项目一款发动机为基础。对其空调压缩机支架结构进行优化。
1.1 空调压缩机支架频率
该车辆变速器电子油泵及油泵控制器采用分体式设计,电子油泵主要参数见表1。……
