动力设备弹簧板-橡胶隔振系统设计与动态特性

Design and Dynamic Characteristic of Vibration Isolation System of Dynamic Equipment Spring Steel-Rubber

针对某动力设备工作过程中产生的振动冲击现象,构建该动力设备振动系统的数学模型,计算其工作过程中对地面产生的冲击激励。设计新型弹簧板-橡胶层叠式隔振系统;利用橡胶材料的非线性、橡胶块与弹簧板之间的接触耦合关系,构建弹簧板-橡胶层叠式隔振系统的非线性有限元仿真模型。仿真结果表明:在载荷的作用下,隔振系统的最大变形量为12.73 mm,最大应力为280.80 MPa,地面基础的振幅由原来的2.380 mm衰减到0.386 mm,衰减了83.78%。该研究成果为层叠式隔振系统的设计研发提供了理论基础和技术支撑。

For the vibration impacts appeared during operation of dynamic equipment,a mathematical model of vibration system of the equipment is built to calculate the impact stimulus on the ground. Combined with the characteristics of vibration isolation system, a new cascading vibration isolation system is designed. The characteristics of nonlinear characteristic of rubber and contact coupling relationship between rubber and spring steel is used to build the nonlinear finite model of spring steel-rubber vibration isolation system. The results of simulation show that,in loaded conditions,the maximum deformation of the vibration isolation system is 12. 73 mm,and the maximum stress is 280. 8 MPa. And the vibration amplitude of ground base is reduced from 2. 380 mm to 0. 386 mm,reduced by 83. 78%. The achievement provides a theoretical basis and a technical support for cascading isolation design.