AA new dynamic modeling method to fixed machined joint interface
The concept of virtual material was developed for the first time when the flexible joint interface may be considered as a virtual material with the same cross area. The virtual material is rigidly connected with two components situated in both sides of flexible joint interface. By adding an element, a complex assembled part including a joint interface could be equaled as a simple component without any joint interface in order to simplify the complicated problem about flexible joint interface. The interaction between normal and tangential characteristics of fixed interface taken into account, a series of exact analytical solutions of elastic modulus, shear modulus, Poisson ratio and density were deduced from virtual material through Hertz contact theory and fractal theory. By using experimental results about a series of test specimens, the exact analytic expressions for virtual materials parameters were verified in terms of qualitative comparison principle of resembling vibration shapes and quantitative comparison principle of the natural frequencies. The virtual material model vibration shapes are in excellent agreement with the experimental results. The relative errors between the virtual material model natural frequencies and the experimental ones are between-3％ and 10％.
fixed machined joint interface virtual material Hertz contact theory fractal theory vibration shape natural frequency
Hongliang Tian Bin Li Kuanmin Mao Peihua Gu
State Key Laboratory of Digital Manufacturing Equipment and Technology, School of Mechanical Science and Engineering Huazhong University of Science and Technology, 430074 Wuhan city Hubei province, the Peoples Republic of China
国际会议
重庆
英文
415-419
2011-01-21（万方平台首次上网日期，不代表论文的发表时间）