A Neuro-Muscular Elasto-Dynamic Model of the Human Arm Part 2:Musculotendon Dynamics and Related Stress Effects-中国Betway体育网页登陆

摘要 Inthispaperwedevelopanelasto-dynamicmodelofthehumanarmthatincludeseffectsofneuro-muscularcontroluponelasticdeformationinthelimb.Theelasto-dynamicmodelofthearmisbasedonhybridparametermultiplebodysystemvariationalprojectionprinciplespresentedinthecompanionpaper.Thoughthetechniqueissuitablefordetailedboneandjointmodeling,wepresentsimulationsforsimplifiedgeometryofthebones,discretizedasRayleighbeamswithelongation,whileallowingforlargedeflections.MotionoftheupperextremityissimulatedbyincorporatingmuscleforcesderivedfromaHill-typemodelofmusculotendondynamics.Theeffectsofmuscleforcearemodeledintwoways.Inoneapproach,aneffectivejointtorqueiscalculatedbymultiplyingthemuscleforcebyajointmomentann.Asecondapproachmodelsthemuscleasactingalongastraightlinebetweentheoriginandinsertionsitesofthetendon.Simplearmmotionissimulatedbyutilizingneuralfeedbackandfeedforwardcontrol.Simulationsillustratethecombinedeffectsofneuralcontrolstrategies,modelsofmuscleforceinclusion,andelasticassumptionsonjointtrajectoriesandstressandstraindevelopmentintheboneandtendon.

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A Neuro-Muscular Elasto-Dynamic Model of the Human Arm Part 2:Musculotendon Dynamics and Related Stress Effects

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