Feasibility analysis of the replacement of the actual machining surface by a 3D numerical simulation rough surface

Mu, Xiaokai; Sun, Qingchao; Xu, Jinkai; Chai, Zhiping; Sun, Wei; Zhao, Binbin

doi:10.1016/j.ijmecsci.2018.10.023

Cited by 38 publications

(12 citation statements)

References 41 publications

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“…The surface of all objects in the physical world is made up of rough surfaces covered with numerous asperities of different sizes, which has been proven by many experiments [1][2][3]. The contact surface is formed by squeezing two rough surfaces and is widely present on all mechanical interfaces, plays an important role in contact characteristics on the mechanical interfaces (e.g.…”

Section: Graphical Abstractmentioning

confidence: 99%

An equivalent calculation method for 3D contact area between two rough surfaces based on 2D profiles

Jing

Meng

Dai

et al. 2022

Preprint

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The calculation of the real contact area between rough surfaces is an important prerequisite for studying the contact characteristics of mechanical joints. However, it is challenging to accurately calculate the real contact area between rough surfaces by existing theoretical and experimental methods. Therefore, an efficient and practical equivalent calculation method for the real contact area between three-dimensional(3D) rough surfaces based on two-dimensional(2D) profiles is presented in this paper. The main advantage of the presented method as compared with those available in the literature is that the real contact area can be predicted only by the section of the 3D rough surfaces in contact, which greatly reduces the computational cost. The sampling strategy of sections is studied to improve the accuracy of the proposed method. The accuracy of the proposed equivalent calculation method is verified by numerical simulation. The results show that the proposed equivalent calculation method can efficiently predict the real contact area between rough surfaces within the scope of engineering application.

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Section: Graphical Abstractmentioning

confidence: 99%

An equivalent calculation method for 3D contact area between two rough surfaces based on 2D profiles

Jing

Meng

Dai

et al. 2022

Preprint

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“…In the past few decades, many scholars have studied the modeling of rough surface contact. 1–8 Greenwood and Williamson 6 proposed a classic statistical contact model (the G-W model). The model assumes that the rough surface is composed of hemispherical asperities with the same curvature radius, whose height obeys the Gaussian distribution, and the deformations of asperities are independent of each other.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation experiments and regression modeling for asperity contact of ceramic surfaces

Tan

2021

SIMULATION

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Ceramic materials, with their excellent properties, have been widely used in the engineering field. With the ceramic surface as the research object, the properties of elastic contact of ceramic surfaces are studied using the numerical simulation calculation method. In this paper, uniform experimental design is carried out with topography parameters, external load, and material property parameters, which have a direct impact on the surface contact; a numerical calculation model is established and a series of simulation experiments is carried out on the contact of asperities on the ceramic surface, which not only intuitively shows the contact behavior of asperities on the ceramic surface, but also obtains the contact parameters of the surface. Then, the numerical simulation results are compared with those of G-W model, which proves the feasibility of the numerical simulation calculation and shows that the numerical simulation model established in this paper is more in line with the engineering practice than the G-W model. Through the regression analysis of the simulation results, the analytical calculation model between the surface contact parameters and the influencing factors is established, which provides references for quantitative analysis and characterization of contact properties related to the material surface.

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“…For precision machined parts, from a micro perspective, there are convex peaks and valleys of different sizes and shapes on the material surface. The influence of these different topographical features on the assembly quality of parts and the whole machine performance of products is also different [2].…”

Section: Introductionmentioning

confidence: 99%

A High Precision Modeling Technology of Material Surface Microtopography and Its Influence on Interface Mechanical Properties

Wang

et al. 2021

Materials

Self Cite

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In order to accurately and effectively obtain the contact performance of the mating surface under the material surface topography characteristics, a numerical simulation method of rough surface based on the real topography characteristics and a multi-scale hierarchical algorithm of contact performance is studied in this paper. Firstly, the surface topography information of materials processed by different methods was obtained and characterized by a measuring equipment; Secondly, a non-Gaussian model considering kurtosis and skewness was established by Johnson transform based on Gaussian theory, and a rough surface digital simulation method based on real surface topography was formed; Thirdly, a multi-scale hierarchical algorithm is given to calculate the contact performance of different mating surfaces; Finally, taking the aeroengine rotor as the object, the non-Gaussian simulation method was used to simulate the mating surfaces with different topographies, and the multi-scale hierarchical algorithm was used to calculate the contact performance of different mating surfaces. Analysis results showed that the normal contact stiffness and elastic–plastic contact area between the mating surfaces of assembly 1 and assembly 2 are quite different, which further verifies the feasibility of the method. The contents of this paper allow to perform the fast and effective calculation of the mechanical properties of the mating surface, and provide a certain analysis basis for improving the surface microtopography characteristics of materials and the product performance.

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Feasibility analysis of the replacement of the actual machining surface by a 3D numerical simulation rough surface

Cited by 38 publications

References 41 publications

An equivalent calculation method for 3D contact area between two rough surfaces based on 2D profiles

An equivalent calculation method for 3D contact area between two rough surfaces based on 2D profiles

Numerical simulation experiments and regression modeling for asperity contact of ceramic surfaces

A High Precision Modeling Technology of Material Surface Microtopography and Its Influence on Interface Mechanical Properties

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