简介:基于用Kane-Huston方法推导的多体动力学方程,建立了多刚体非线性优化设计的数学模型,提出了求解该问题的逐步线性化方法,给出了某高炮多刚体系统非线性优化算例。计算结果表明这种方法是可行的。
简介:利用微机的声卡、Matlab/Simulink,以及耳麦作为声音采集设备,通过快速傅里叶变换分析,提出一种基于声卡的测量刚体固有频率的方法.以音叉固有频率测量实验为例,验证系统的可行性,表明该测量系统结构简单,易于实现.
简介:AWeb-basedagilesystemforrollingbearingdesign;AnintelligentapproachofknowledgesearchingwithinInternet-baseddistributiveknowledgeintegratedenvironment;Assessmentofthemodulusofelsaticityusingthependulumtechnique;Comparativeanalysisoffatiguefailuresinrollingcontactslubricatedwithagreaseandabaseoil;Decarburization-controlledinternaloxidationofrollingbearingsteelSAE52100atthedissociationpressureofwustite……
简介:Optimizationofthedetectionofrollingbearingdefectsusingspectralsubtractionde-noisingofthesignal;Originofsupportingtechnologiespromotingdevelopmentofrollingbearings-focusingonlathesandgrindingmachines;Partiallyblindsourceseparationofthediagnosticsignalswithpriorknowledge;Predictionofresidualfatiguelifeofbearings-Part2:applicationofsurfacehorizontallypolarizedshearwave
简介:Experimentalinvestigationofsurfaceinitiatedrollingcontactfatigueusingdentedsurfaces;Influenceofsteelstructureparametersuponlifetimeofrollingbearing;Intelligentconditionmonitoringofbearingsinmailprocessingmachinesusingacousticemission;Investigationofthethrustantifrictionbearingundermagnet-powderedlubricationconditions……
简介:建立了单管舰炮的动力学模型与理论,推导了舰炮系统Lagrange方程,并以此研究了某型舰炮的振动。结果表明:甲板刚度对炮口振动的影响最大;设计适当的平衡机系统、设计弹性联轴节以增加高低机的柔性,能有效地提高炮结构的减振性能。采取这些措施可以将最大振幅从30~40mm降低到3~4mm。而完全地消除振动是不可能的,除非辅之以吸振。