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Information × Registration Number 0200U003048, 0195U012011 , R & D reports Title Research of pattern rules of vibration excitations and damping of nonconservative mechanical systems considering technology and operation factors. popup.stage_title Head Matvyeyev V.V., Registration Date 13-03-2000 Organization Institute for problems of strength NASci of Ukraine popup.description2 The series or research of excitation and vibration damping of mechanical systems considering technology and operation factors was conducted. Resonante vibration of plate under kinematic excitation regarding imperfect elasticity of material was considered. The influence of correlation of elastic and damping characteristics of subsystems' coupling on resonant vibration formation of systems with violated cyclic symmetry was researched. Analytical approaches were proposed which enable to detect natutal-frequencies of rod elements with cracks. It was developed and tested the method of estimation of real form of hysteresis loop, caused by imperfect elasticity of the material. The influence of nitration process, thermal and thermomechanical treatment, chemistry and porosity on damping capacity of some metallic materials was researched. The damping capacity of full-scale details: blades of compressors with groove-type joint and brackets made of new manganese-copper alloy with high damping and prismatic rods with edge transverse crack was researched. The method was developed which allows to choose nondamageable vibro-stabilizing treatme regime, which provides lowering of residual stress in details with magnitude not exceeding the specified one. The methodic of definition of dynamic stability of bladed rotor wheels considering frequency and aero-dynamic nonuniformity was developed. The influence of kinematic displacement of blades under vibrations onto aero-damping and dynamic stability of bladed discs was studied. The analysis of dynamic stability of specific rotor wheels of compressor of aircraft gas turbine engine was conducted. Product Description popup.authors popup.nrat_date 2020-04-03 Close