The structure optimization for nonlinear vibration reduction system of the tracked ambulance

Abstract

This paper aims at improving the performance of tracked ambulance nonlinear vibration reduction system by the structure optimization design. The structure optimization focuses on the stretcher base. Two structure optimization schemes are proposed based on the mechanism of dynamic vibration absorber (DVA), namely, the linear and nonlinear structure optimization schemes. The linear structure optimization scheme is finally adopted by comparison of two schemes under random vibration, and the performance of linear scheme is also validated under shock vibration. Then the global sensitivity analysis method is applied to calculate the parameter sensitivity of nonlinear vibration reduction system. At last, the nondominated sorting genetic algorithm II (NSGA-II) is used to optimize the performance of the nonlinear vibration reduction system. It shows the vibration energy of the supine human body on stretcher is reduced after above studies, which proves the validity and feasibility of the structure optimization schemes proposed, and the optimization studies applied in this paper.

Parameter Sensitivity Analysis of Mounting Pedestals and Multi-Objective Optimization for a Multi-Support Rigid Body System

“…Due to the importance of structural optimization, the depth and breadth of research in this field have continued to expand, and many achievements have been obtained. Yang et al [5] proposed a variety of stretcher structure optimization schemes based on the principle of dynamic vibration absorbers (DVAs). By optimizing the stretcher support stiffness and damping coefficient, the performance of the nonlinear vibration damping system of the tracked ambulance was improved, and vibration of the supine human body on the stretcher was reduced.…”