Research On Impact Dynamic Characteristic Of Main Turbine Cylinder For Marine

The automobile industry is an important indicator of a country’s industrial development and integrated manufacturing capabilities.At present,the demands of ride comfort and environmental protection of heavy duty truck are increasing.The taper-leaf spring compared with the traditional multi-leaf spring in the above-mentioned two areas has great advantages.As the ability of design and manufacturing,as well as material research and development are continuously improving,system of taper-leaf spring has leaded the direction of heavy-duty truck suspension development.The merits of taper-leaf spring and its application,both in domestic and abroad,are introduced in this paper.Based on a certain type of truck,a taper-leaf spring design,finite element analysis and test validation are applied.In this paper,a general scheme of front and rear suspension system are proposed,and in accordance with the load,the arrangement of space as well as the capacity of production,structural parameters of this taper-leaf spring design are determined.Drawing and prototype samples are completed in consequence.According to different content of finite element analysis,corresponding 3D models are created.Hypermesh and ABAQUS software are utilized cooperatively to perform the analyses of both front and rear springs.The characteristics of flexibility,that is,the stiffness of front and rear leaf spring assemblies are analyzed.Beyond tis,assembly stress and its distribution under different load conditions of each leaf are analyzed as well.In order to verify the accuracy of the finite element analysis,testing proposals and methods are devised according to corresponding contents of the validation.Bench test of the characteristics of flexibility as well as the stress distribution of front and rear leaf spring are performed respectively.Based on the work above,focusing on stiffness,stress,deformation of both front and rear springs and combining the theoretical design and finite element analysis,the structure.of taper-leaf spring are optimized.