大型矿车发动机橡胶悬置静、动态刚度特性研究

Analysis of Static and Dynamic Characteristics of Rubber Mounts of Large Dump Truck

大型矿车的发动机质量巨大、安装方式独特,对其发动机悬置的静、动态刚度特性进行研究具有重要意义。采用显式有限元计算方法对大型矿车的发动机橡胶悬置进行了静、动态刚度特性分析,并在试验台上进行试验来检测数值仿真的精度,结果表明:大型矿车发动机悬置的静刚度仿真测试相对误差在8%以内、动刚度仿真测试相对误差在15%以内,这说明仿真与测试结果较为吻合,可以在结构设计阶段通过数值模拟的方式预测其静、动态刚度特性。研究结果对大型装备悬置系统的结构设计、缩短研发周期以及预防振动噪声具有参考价值。

The engine of large dump truck is of big weight and unique installation, so it is of great significance to study the static and dynamic stiffness characteristics of the engine rubber mounts. Explicit finite element method is adopted to investigate static and dynamic stiffness characteristics of the rubber mounts of large dump truck, and corresponding tests are carried out to detect the accuracy of numerical simulation. Results show that： the relative error of static stiffness between simulation and test is less than 8%, and the relative error of dynamic stiffness between simulation and test is less than 15%. This indicates that the simulation results are in good agreement with the test, and it is reasonable to predict the static and dynamic stiffness characteristics in the design stage through numerical simulation methods. The results of this have reference value for the structural design of large equipment rubber mounts system, shortening the development cycle and preventing vibration noise.