Parametric Analysis And Optimization Design Of Viscoelastic Suspensions' Damping Components

Viscoelastic suspensions'damping components is a damping device used for buffering the vibration and shock of track-type bulldozer's walking system. The quality of its damping performance affect the stability of vehicles bulldozer, operating reliability and driving comfort. Therefore, the quality of damping absorber's damping and vibration is critical to the track-type bulldozer. Currently, we design the damping absorber mainly rely on traditional patchwork method, which not only wasters a lot of manpower and material resources and can not guarantee that all damping absorber parameters effect the impact energy absorber is best. Along with mathematical programming and computer technology, finite element technique has been able to solve the viscoelastic material's highly nonlinear problems. This article will introduce the technology of parametric finite element modeling and optimization in order to improve the damping effect of the damping absorber design.In this paper, the parameters of damping component which effect the damping effect of the vibration include: damping component bottom diameter, overall height, top radius, shape side angle and height of the bottom. Values of these parameters mainly affect the stiffness and energy dissipation of damping component. There exists an optimization problem.Establishment of a multi degree of freedom mechanical model of random load input for machine and single viscoelastic suspension, which provide load parameters for the subsequent selection of optimal design. Buffer conditions to determine optimal damping parameters and using ANSYS language of the secondary development associated with the preparation of the macro command interface, to achieve damping and parametric analysis of documents. Establishment of damping absorber's optimization model using ANSYS secondary development was optimized and achieved a reasonable optimization results. The optimized results were checking and vibration in the three typical conditions, which showed that: the optimized damping buffer met the design requirements in strength, stiffness and strain. At the same time, also pre-optimized damping component and optimized damping absorber were compared in three typical operating conditions, which contrast analysis showed that: optimized damping buffer not only met the requirements premise for deformation, stiffness and strain, and which has been greatly improved the energy consume in unit cycle than the pre-optimization. Due to the time and experimental were lack, its true damping effect and reliability of the optimized damping component need to be further explored in practice.