純電動(dòng)公路客車車身骨架高剛度輕量化設(shè)計(jì)

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關(guān)鍵詞：純電動(dòng)公路客車；車身骨架；尺寸優(yōu)化；輕量化；多目標(biāo)優(yōu)化；多目標(biāo)尺寸優(yōu)化 中圖分類號(hào)： 文獻(xiàn)標(biāo)識(shí)碼：A DOI：10.3969/j.issn.1674-8484.2025.03.009

Abstract：A multi-objective structural design was optimized fora pure electric coach bodyframe to enhance thestiffnessandreduce the mass.Afiniteelementmodelof thebodyframe was established，withthespecific pure electric coach as the research subject，to determine weight coefcients for static and dynamic working conditions.The modified frame structure underwent variable grouping and multi-condition multi-objective dimensional optimization.Static analysis and modal analysis were subsequently conducted.The results show that the optimizedbody frame achieveaminimum 4% enhancement in comprehensive average stiffness witha 7% improvement inaveragedynamic frequencyof the first fourorders，andwitha 1% mass reduction. Therefore，it makes vehicle frame performance being effectivelyupgraded while maintaining original massor achieving controlled lightweight effects.

Keywords：pureelectric highwaypassenger buses;bodyframes;sizeoptimization;lightweightdesign;multi objective optimization;multi-size optimization

為了降低純電動(dòng)公路客車能耗并提高客車安全性與行駛里程，已有學(xué)者對(duì)其進(jìn)行車身骨架輕量化和結(jié)構(gòu)優(yōu)化研究[1-2]

目前車身骨架的輕量化主要包括3類：使用輕質(zhì)材料，使用先進(jìn)制造工藝和改進(jìn)結(jié)構(gòu)[3]，去除對(duì)車身性能影響較小的零部件。（剩余10571字）