瞬态碰撞实验装置缓冲性能仿真

Buffer Performance Simulation of Transient Impact Experiment Device

针对质量块—悬臂梁时变力学实验装置,进行了缓冲器方案设计,该缓冲器主要由缸体、活塞、柱塞杆、端盖、弹簧、注油孔、缓冲液、橡胶垫组成,对各零件进行了设计计算,并在CATIA中对缓冲器各个部件以及装配体进行三维实体建模。对缓冲工作过程进行受力分析,建立了基本的运动受力方程,运用Simulink仿真软件对整个缸体内部的运动过程进行建模,得出了各个部件在缓冲过程中的运动曲线,计算结果表明,该设计方案满足缓冲性能要求。对缸体刚强度进行有限元分析,采用ABAQUS软件对缸体进行网格划分,载荷为最大液压阻力,约束为固定缸体与底座的装配平面,得出了最大液压阻力下缸体的位移和应力,从计算结果可以看出,缸体的刚度和强度满足设计要求。

This topic is a quality piece-part of the cantilever beam time-varying mechanics experiment de- vice. First we had buffer plan design and the buffer was mainly composed of cylinder block, piston, piston rod, end cover and spring, oil injection hole, buffer and rubber mat. Each part of the designing was cal- culated and 3d entity modeling of the buffer parts in CATIA and assembly were processed. Then, stress a- nalysis was carried out on the working process of the buffer and a basic mechanical equation was estab- lished. And using Simulink software, process of the whole movement within the cylinder body was mod- eled. It is concluded that the plan designed meet the requirements of cushioning performance. Finally, the finite element analysis was carried out on the cylinder body strength, using ABAQUS software, cylinder was meshed, and the load was the maximum hydraulic resistance and constraint cylinder body and the base plane as the assembly. It is concluded that stress and displacement of the cylinder under the largest hydrau- lic resistance were got, and we can be seen from the calculation results that the stiffness and strength meet the design requirements of cylinder body.