Experimental Investigation of Dynamic Normal Characteristics of Machined Joint Surfaces

Fu, Wei; Huang, Yuhan; Zhang, X. L.; Guo, Qin

doi:10.1115/1.1287589

Cited by 53 publications

(32 citation statements)

References 5 publications

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“…The results from Connolly and Thornly [19] showed that the normal stiffness is mainly influenced by the machined texture of rough surfaces and little by their hardness. Fu et al [21] presented an experimental investigation of normal parameters of several machined rough surfaces and found that the normal stiffness increases with increasing normal load. Fu et al [21] presented an experimental investigation of normal parameters of several machined rough surfaces and found that the normal stiffness increases with increasing normal load.…”

Section: Introductionmentioning

confidence: 99%

Statistical model for normal and tangential contact parameters of rough surfaces

You

Chen

2011

Proceedings of the Institution of Mechanical Engineers, Part C:

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A new statistical model was developed for the normal and tangential contact parameters of rough surfaces based on the elastic-plastic contact theory of asperity. Four deformed regimes of fully elastic, first elastoplastic, second elastoplastic, and fully plastic of an asperity contacting with a rigid surface were taken into account by this model. The present model reveals that the normal and tangential contact parameters of rough surfaces are determined by the material properties of rough surface, statistical parameters for surface topography, and loading. Based on the results comparison and analysis, the present model is shown to be more complete than the GW, CEB, ZMC, and CEB friction models in describing the elastic-plastic contact problems between the rough surfaces. The effects of height distribution of asperities, plasticity index, and loading on contact parameters were simulated and discussed. In addition, the Gaussian numerical results predicted by the present model were researched emphatically.

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Section: Introductionmentioning

confidence: 99%

Statistical model for normal and tangential contact parameters of rough surfaces

You

Chen

2011

Proceedings of the Institution of Mechanical Engineers, Part C:

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“…Subsequently, D. J. Whitehouse and J. F. Archard studied the relationship between peak height of the contact surface micro-protrusions among the mechanical bonding surfaces and the curvature of the peak. Moreover, the joint distribution density was studied and WA model was proposed (Blossey, 2003;Hoffmann and Gaul, 2003). According to the GW and WA models, R. A. Oninn and J. F. Archard used WA to determine the separation relationship between contact area, load and surface, and the calculation results are consistent with GW, which is called OA model (Jackson, 2006;Fu et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

“…A. Greenwood and J. B. P. P. Williamson used Gaussian distribution method to simulate the distribution law of micro-convex among the joint surface, and proposed a GW model based on single hypothesis (Greenwood and Williamson, 1996). However, since the premise assumptions in this model were independent mutually, they could only be applied under conditions of small load.…”

Section: Introductionmentioning

confidence: 99%

Research on the micro and dynamic characteristics of combination surface based on fractal theory

Zhu

Yan

2020

Mech. Sci.

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Abstract. The dynamic characteristics of the mechanical joint surface are important aspects of the dynamic theoretical analysis and optimization design of the machine tool. In this paper, the typical mechanical joint surface is taken as the research object. Through the combination of theoretical analysis and experimental analysis, the dynamic characteristics of typical joint surface parameters with different surface textures and the influence of texture parameters on the dynamic characteristics of the joint surface are studied. Based on the Hertz elastic contact theory and the contact fractal theory, the normal and tangential contact fractal models of the joint surface are derived, and then a mathematical model of the joint surface normal and tangential contact stiffness considering the domain expansion factor is established. The influence of surface texture parameters on the dynamic characteristics of the surface is further studied according to the model. In addition, the design of the experimental device and experimental scheme design are completed by the contact resonance method and the ERA algorithm, and the joint surface parameter identification experiment with texture is conducted. The normal and tangential frequency response functions of the joint surface, the dynamic characteristic parameters of the joint surface and the influence law of the joint surface parameters on the contact characteristics are obtained through the dynamic test analysis technology.

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“…Due to the contact problem between the rough surfaces is nonlinear and complicated, the joint surface contact damping parameters usually got by the method of experiment to identify, in the former studies. [3][4], with the development of fractal contact theory application in rough surface [5], researchers began to expand the research field of fractal contact model in the field of bolt joint dynamic characteristic. References [6][7][8] researched the joint surface contact stiffness contact damping based on two-dimensional fractal surface, and the corresponding fractal model is established.…”

Section: Introductionmentioning

confidence: 99%

Normal Contact Damping Predict Model of Joint Surface Based On Unit Area and Fractal Theory with Simulation

Zhao¹,

Hong²

2015

Proceedings of the 2015 3rd International Conference on Machinery, Materials and Information Technology Applications

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Joint surfaces widely exist in mechanical assembly structures, the local stiffness and damping have important effect on the whole dynamic analysis of the structure. In this study, proposed a normal contact damping forecast model and analyze its damping characteristics, based on the microcosmic mechanism between joint surfaces and citing the domain extension factor and unit area radio, combine with the modified fractal theory and energy dissipation. The simulation results show that the damping characteristic curve appear inflection point when the fractal dimension value D is 1.428. When, the normal contact damping increases with the increase of fractal dimension but decreases with the increase of contact area. When, the normal contact damping increase with the increase of contact area .Since the reaction of real contact area is relate to the change of the load, the relationship between the normal contact damping and the contact area can accurately predict the performance of assembly structure to a certain extent, the existence of the inflection point also provide a reference for the optimization design of assembly structure.

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Experimental Investigation of Dynamic Normal Characteristics of Machined Joint Surfaces

Cited by 53 publications

References 5 publications

Statistical model for normal and tangential contact parameters of rough surfaces

Statistical model for normal and tangential contact parameters of rough surfaces

Research on the micro and dynamic characteristics of combination surface based on fractal theory

Normal Contact Damping Predict Model of Joint Surface Based On Unit Area and Fractal Theory with Simulation

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