Finite Element Analysis And Lightweight Design Of Heavy Load Metal Rubber Damper

Metal rubber damper as suspension components on the high-power diesel engine, whichhas more advantages, such as load-bearing capacity, big damping coefficient, high and lowtemperature resistance, good resistance corrosion, long use life, and meets the requirements oflarge power diesel engine in harsh conditions. With the need for vehicle maneuverability andlightweight, it is very necessary for lightweight research of metal rubber damper.Through utilization of high-strength, low density aluminum replace raw material toachieve damper lightweight. Basing on damper structure geometry parameters to establish theshaft, seat and lid solid model with CATIA, the geometric model import HyperWorkstoestablish finite element analysis mode of damper structurethrough geometry cleanup,meshing and boundary conditions etc. Analysis the stress of Damper, then applied loads andconstraints on the finite element analysis model, to separately analysis static strengthcharacteristic of damper parts, including stress and strain distribution of structures and theweak position of the structure （including stress concentration, there have been failures andthe maximum stress point, etc.）. The improvement of the design of the damper parts whichmeets the requirement of damper structural strength. Analysis showed that reduction70.58%in weight by lightweightdamper structures, stress concentration has significantly decreased.Based on precision molding method, designs hot extrusion dies of damper structures. andstudies on process flow of hot extrusion, the blank size selection, the dies of damper structures.Analysis showed that: compared with conventional machining method, hot extrusion not onlygreatly improves the mechanical property of the damper structural parts, but also the material consumption is largely decreased.