基于多学科的发动机悬置支架轻量化设计研究

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中图分类号：U463.2 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250071

Research on Lightweight Design of Engine Mount Bracket Based on a Multi-disciplinary Approach

Li Fangjie，Ren Peng，Luan Zhenjun， Zhu Lin，Wei Boxiong，Gao Ruixue （EngineeringResearch Instituteof Beiqi Foton AutomobileCo.，Ltd.，Beijing102206）

Abstract：To achieve the design philosophy of energy conservation，emission reduction，cost decreasing and benefit increasing，taking theengine mount bracketofa medium-sized truck as the research object，this paper adoptsa multidisciplinarytopologyoptimizationdesignmethod，comprehensivelyconsideringfactorssuchasstructural strength， stfnessand modetoachievethelightweightdesignofthemountbracketonthebasisof meting thedurabilityand Noise，Vibration，Harshness（NVH） performance.Lightweightdesignof the mount bracket structure is performed based onmultipleworkingconditions，andfactorssuchasmaterial strength，modal frequencyandstiffnessperformanceare considered comprehensively.While ensuringtherational optimizationof thestructure，themount bracket weightis reduced by 20.8%，whilethe performance is greatly improved，with a modal increase of 13.9%andanaverage safety factor increase of 35% ：

Key words：Mediumtruck，Mountbracket，Multi-disciplinary，Topologyoptimization，Lightweightdesign

1前言

为降低汽车能耗、提升续航里程，达成节能减排与绿色环保目标，汽车轻量化已成为汽车研发的关键方向。（剩余5275字）