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摘要: 研究了切向均布随从力作用下热弹耦合轴向运动梁的稳定性问题。建立了热弹耦合轴向运动梁 在随从力作用下的运动微分方程,采用归一化幂级数法,推导出了2种边界条件下热弹耦合轴向运动梁在随 从力作用下的特征方程。计算了系统的前3阶量纲一复频率,分析了量纲一运动速度、量纲一热弹耦合系数 和量纲一随从力等参数对梁的稳定性的影响。Abstract: Thethermoelasticcouplingstabilityoftheaxiallymovingbeamundertheactionofuniformlydistributedtangentialfollowerforceswasinvestig ted.Thedifferentialequationofmotionforthe axiallymovingbeamundertheactionofuniformlydistributedtangentialfollowerforceswasestablished, andtheeigenequationfortheaxiallymovingbeamwithtwokindsofboundaryconditionssubjectedtofollowerforceswasderivedbyanormalizedpowe seriesmethod.Thefirstthreeordersdimensionlesscomplexfrequenciesofthesystem werecalculated,andtheeffectsofthedimensionless movingspeed,thedimensionlessthermoelasticcouplingfactor,thedimensionlessfollowerforceson thestabilityoftheaxiallymovingbeaminthethermoelasticcouplingcasewereanalyzed.
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Key words:
- solidmechanics /
- stability /
- followerforce /
- axiallymovingbeam /
- thermoelasticcoupling /
- powerseriesmethod
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