Optimisation of a vehicle energy absorbing steel component with experimental validation
Abstract The paper deals with the optimisation of a tapered tubular steel component to be used as an energy-absorbing device in the front structure of a vehicle body. Aim of the optimisation problem is the minimisation of a load uniformity parameter evaluated as the ratio between the maximum and the average crushing loads. The optimisation problem takes into account two design variables describing a tapered geometrical configuration, the diameter of the component at one of its bounds and the tapering length. Two improved geometrical configurations have been found and have been experimentally tested to verify the numerical results with impact velocities up to 10 m/s.
In this paper,according to the theories of whole life appraisal,value engineering and environmental economics,and based on the Evaluation Standards for Green Building(GB/T 50378-2006) and Management Methods for Performance Evaluation on Commercial Residential Buildings,an economic performance evaluation system was established for green building.Furthermore,a comprehensive evaluation model was developed on the basis of fuzzy mathematics principal.The purpose of this study was to provide referential methods for evaluating the economic performance of green building.