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Optimization of Pendulum for a High-Impact Shock Testing Machine with Medium Weight

Collision impulse to pendulum shaft is tend to be generated when hammer impacting the anvil. In order to eliminate the collision impulse and find a preferential size of the pendulum, based on the rigid body dynamical model, the conditions of the coincidence of the center of strike and the center of percussion are established; calculation formula of the distance between the axis of the pendulum shaft and the center of percussion is derived. By selecting certain geometric parameters of the pendulum as design variables and transferring the multi-objective nonlinear optimal design problem into single objective problem, a mathematical model of the optimal design of the pendulum is established. Matlab optimization toolbox is utilized to calculate the model, and a reasonable result is obtained. The work of this paper has considerable significance in the far field of engineering design.