基于隔振率及动态传递力测试的某动力总成悬置隔振性能试验与特性分析  

Vibration isolation performance test and characteristic analysis ofa powertrain mount based on vibration isolation rate anddynamic transmission force testing

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作  者:李欣[1] 曹宇[1] 肖洁[1] 陈璐 LI Xin;CAO Yu;XIAO Jie;CHEN Lu(Department of Vehicle Chassis,China North Vehicle Research Institute,Beijing 100072,China)

机构地区:[1]中国北方车辆研究所推进系统技术部,北京100072

出  处:《兵器装备工程学报》2024年第5期93-99,150,共8页Journal of Ordnance Equipment Engineering

摘  要:针对某型装甲车辆动力总成中发动机右侧悬置易损坏,其寿命较其他3点悬置寿命更短的问题,开展了故障诊断测试。经测量动力总成悬置4点支撑位置上、下点振动加速度以及4个悬置系统垫块的支撑力数据并分析研究发现,悬置系统4个支撑点中发动机右侧悬置支撑点垂直向隔振率最差,而该处悬置垂直支撑力较其他3位置悬置支撑力大。这正是该位置悬置系统寿命低的直接原因,最后根据测试分析结果提出了优化建议,建议从承重、发动机工作频率范围、悬置结构、形式及其刚度、阻尼、多向隔振要求上考虑对该型车辆的动力总成悬置系统进行优化,以提升动力总成悬置系统总体隔振效果。A fault diagnosis test was conducted to address the issue of damage to the right engine mount in the powertrain of a certain type of armored vehicle,which has a shorter lifespan compared to other point mounts.By measuring the vibration acceleration at the upper and lower support positions of the powertrain mount,as well as the support force data of the four suspension system pads,analysis and research have found that among the four support points of the suspension system,the vertical vibration isolation rate of the right engine mount support point is the highest,and the vertical support force of the mount is greater than that of the other three positions.This is precisely the direct reason for the low service life of the suspension system at this location.Finally,optimization suggestions were proposed based on the test analysis results.It is recommended to consider optimizing the powertrain suspension system of this type of vehicle from the aspects of load-bearing,engine operating frequency range,suspension structure,form and stiffness,damping,and multi-directional vibration isolation requirements,in order to improve the overall vibration isolation effect of the powertrain suspension system.

关 键 词:装甲车辆 动力总成悬置 隔振率 

分 类 号:U463.3[机械工程—车辆工程]

 

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