Feature Research Of Dynamic And Recovery Test Bed Dynamic System

Based on the practical requirements of the research institution, and taking a power and recovery test bed as research object, this thesis's focus is on the speed of pneumatic hydraulic cylinder and the force analysis of hydraulic cylinder cap and head.The power and recovery test bed dynamic system will take high pressure air as dynamic source.The high pressure air inside energy accumulator could push plunger to do the high-speed movement, and finally to realize the requiring speed of test piece. This thesis ,firstly, taking power and recovery test bed dynamic system as the research object, combined with the proportion throttle sample parameters,builds hydraulic simulation model of the key component of proportion throttle. And then, this thesis builds the simulation model of hydraulic system of test piece propelling process. With setting up the value of air supply pressure and the signal of proportion throttle, the speed of pneumatic hydraulic cylinder agrees well with the simulation result by comparing with the simulation speed of pneumatic hydraulic cylinder with trial value. Then,with the CATIA,the thesis build a model of hydraulic cylinder cap and head, and lead them in the ABAQUS. This thesis builds the simplified model of hydraulic cylinder cap and head in this ABAQUS,analyzes the contact mechanics in the condition of stable 31.5MPa pressure, and introduces the building of the model including the defination of the boundary conditions and the loading of the load. The finite element analysis results show the intensity of material can meet with the contact intensity of hydraulic cylinder cap and head.