设计计算《新技术新工艺》设计与计算63某作动类产品振动夹具设计与仿真分析李涛(航空工业庆安集团有限公司,陕西西安710077)摘要:振动夹具的作用是将振动台的能量不失真地传递给产品,目前的振动夹具设计只考虑复合重心原则,对夹具的刚度没有进行估算,导致夹具实物制造出来刚度不足,传递性差。为了验证夹具结构设计的合理性,运用ANSYS有限元法对振动夹具进行模态分析及随机振动分析,得到了夹具的固有频率、振型及各安装点的传递特性,依据分析结果对夹具进行综合评判,通过振动试验获得试验模态参数并与有限元模态进行对比,结果显示,仿真分析与试验结果基本一致,夹具结构设计可靠,满足振动试验要求。关键词:振动试验;夹具;固有频率;模态;仿真分析中图分类号:TG75文献标志码:ADesignandSimulationAnalysisofVibrationFixtureforanActuatingProductLITao(AVICQing’anGroupCo.,Ltd.,Xi’an710077,China)Abstract:Thefunctionofthevibrationfixturewastotransmittheenergyofthevibrationtabletotheproductswithoutdistortion.Atpresent,thedesignofthevibrationfixtureonlyconsideredtheprincipleofcompoundcenterofgravity,andthestiffnessofthefixturewasnotestimated,whichresultedininsufficientstiffnessandpoortransmissibilityofthefixturemanufacturedbytherealobject.Inordertoverifytherationalityofthefixturestructuredesign,themodalanalysisandran-domvibrationanalysisofthevibrationfixturewerecarriedoutbyusingtheANSYSfiniteelementmethod,anditwasob-tainedthatthenaturalfre...