垂向及水平前后向激励下座椅频响函数的有限元建模研究

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关键词：人-椅系统；座椅频响函数；有限元模型；振动幅值；非线性 中图分类号：U461.1； U463.83+6 ;U461.4 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202312005

Finite element modeling of seat transmissibility of the human-seat system withthevariation inexcitationcharacteristics

ZHANG Xiaolu1'²，WANG Xinwei1，YU Peijin1，SONG Xichen1 （1.College ofMechanical& Energy Enginering，Beijing Universityof Technology，Beijing 1OOl24，China; 2.EngineeringResearch CenterofAdvanced Manufacturing Technology forAutomotive Components，MinistryofEducation， Beijing University of Technology，Beijing lOol24，China）

Abstract：Thequantitativeanalysisoftheefectoflow-frequencyvibrationsonthesitingcomforthasbeenapivotalfocus inthe fieldoftransportationengineering.Inthisstudy，thetransmissionofvibrationthroughthehuman-seatsystemithdiferentecita tionconditionsispredictedandanalyzedusingthefiniteelementmodeling.Individualfniteelementmodelsforthehumanbodyand theseat，alongitheirespectieontactproprtiesreconstructedandtegatedintoveallfniteeementmodelofehu man-seat system.The modelparameters arevalidated utilizing experimentaldata from static body presure distributionatcushion andbackrestlocations，aswellastemeasurdsat tansmsibilityobtaiedwihtheverticalecitation.Tesultsindcatethef niteelementmodel，validatedtroughthecalibrationdemonstratesagodftwithexperimentaldatafortheseattransmissibility undertheforeandaftexcitation.However，thereisadeviationintheamplitudeatteresonancefrequencyAditionall，temod el predicts that theresonancefrequencyoftheseattransmissiblitydecreases withanincreaseintheexcitationamplitude，andthis trendalignswellwithexperimentalsults，particularlyunderteverticalexcitation.Teconstructedmodelacuratelyflctsthe dynamic response of the human-seat system with diferent conditions.Itserves asa valuable reference for theseatdesign.

Keywords： human-seat system;seat transmissibility;finite element modeling;excitation amplitude;non-linearity

交通运输中的振动环境会对驾乘人员舒适性产生影响并引发健康问题，汽车运行环境中的振动激励较为复杂，其中垂向与水平前后向激励对驾乘舒适性影响较大[1-2]。（剩余14213字）