Optimization design of spring hammer calibration device based on response surface method

In order to improve the measurement ability of the spring hammer calibration device and reduce the energy loss in the collision process, a structural optimization design method based on response surface method is proposed. The optimization goal of this method is to minimize the deformation and mass of the impact structure. By analyzing the response surface, the influences of different size parameters on the optimization results are obtained. Optimization results show that: the relationship between the size parameters and the maximum deformation is non-linear, and the relationship with the mass is partially linear; the changes of overall length L and the upper width a have the greatest influences on the optimization results. Analysis of AONVA is carried out and the results prove the successful optimization. After optimization, the maximum deformation of impact end is 0.0085125 mm and the mass is 0.045681 kg. The maximum deformation is reduced by 24.59%, and the mass is reduced by 12.97%. The optimization meets the requirements of high strength and light weight, proving the effectiveness of the proposed design method for impact structural based on response surface curve and multi-target variable optimization. The response surface method improves the optimization efficiency while ensuring the accuracy, which is a new path for the optimization on spring hammer calibration device.