适用于汽车动力总成悬置系统的可靠模型及决策  

Suitable for Reliable Model and Decision of Automotive Powertrain Mounting System

作　　者：张明[1] Zhang Ming(College of Transportation,Xinxiang Vocational and Technical College,Xinxiang Henan 453000,China)

机构地区：[1]新乡职业技术学院交通学院,河南新乡453000

出　　处：《机械管理开发》2024年第8期18-19,22,共3页Mechanical Management and Development

摘　　要：为了降低汽车悬置刚度属性的不稳定对动力总成悬置系统(Powertrain mounting system,PMS)的影响,设计了一种适用于汽车PMS的可靠模型,并展开算例分析。在分析PMS设计方式和可靠性的关系的基础上,构建得到了一种包含三个步骤的可靠设计模型。研究结果表明:进行解耦率约束时,第4阶模态达到了最小可靠度;逐渐提高不确定水平时,第2阶模态可靠度发生了快速减小。对于频率间隔约束,第2阶与第3阶的频率间隔最易失效,垂向激励将会进一步激发动力总成侧向振动。In order to reduce the influence of mounting instability on Powertrain mounting system(PMS),a reliable model applicable to automotive PMS was designed and an example was given.Based on the analysis of the relationship between PMS design mode and reliability,a reliable design model including three steps is constructed.The results show that:according to the reliable design test results,the reliability of all constraints has been significantly improved,the reliable design process is judged to meet the requirements.There exists a range almost unaffected by the suspension stiffness in the feasible region,which can be regarded as the ideal space for reliable design.When the decoupling rate is constrained,the fourth mode reaches the minimum reliability.When the uncertainty level is gradually increased,the reliability of the second mode decreases rapidly.For the frequency interval constraint,the frequency interval of the second and third orders is the most prone to failure,and vertical excitation will further stimulate the lateral vibration of the powertrain.

关 键 词：动力总成悬置系统 解耦设计 可靠设计 筛选决策 

分 类 号：U463.33[机械工程—车辆工程]