Optimization Analysis for Fuel Cell Bus Body Structure in Multi-load Cases
In recent years,for the sake of energy saving and environment protection,lightweight bodystructure becomes the trend of vehicle development.Based on this objective,it is significant to makea research on optimization for the body structure.When structure optimization for the single workcondition is carried out,the common mechanism optimization design method can provide theoptimum result for certain condition according to the corresponding restriction and objectivefunctions,whereas,the same variable has different variation trends in different conditions.In order tosatisfy the requirements of the actual condition with multi-load cases optimization,synthesis analysisshould be carried out by introducing weights for corresponding variables.First of all,the optimizationsection sizes of frame members of one semi-integral fuel cell bus body are analyzed respectivelyunder four different load cases by applying common mechanism optimization design method.Furthermore,orthogonal design of experiment method is adopted to analyze the effect factor of thefour optimization results in the synthesis optimization analysis and ascertain the integral optimumscheme.By analyzing and checking the bus body gained from the optimum synthesis scheme,it isconfirmed that the synthesis optimization method for structure by adopting both common mechanismoptimization design method and orthogonal design of experiment method can be used to carry out theoptimization analysis under multi-load cases for bus body frame and the lightweight of busframework,on the premise of ensuring the bus body performance index such as strength,stiffness andmode.
bus body multi-load cases optimization structural optimization design orthogonal design of experiment synthesis analysis
Y.K Gao P.Liu
School of automotive,Tongji University,Shanghai,China
国际会议
成都
英文
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）