MATEC Web Conf.
Volume 217, 20182018 International Conference on Vibration, Sound and System Dynamics (ICVSSD 2018)
|Number of page(s)
|17 October 2018
An Experimental Study on the Effect of Surface Texture on Contact Stiffness Using Soft Material
Center for Applied Acoustic, Thermal, and Vibration Studies, LPPM Syiah Kuala University Gedung Fakultas Teknik Universitas Syiah Kuala Lt. 1 Jl. Tgk. Tanoh Abee Darussalam Banda Aceh 23111 Indonesia
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Contact interface is one of the most important factors in a mechanical contact because it is the place where friction, sound, and heat originate. It is therefore inevitable that modeling various phenomenon related to contact dynamics requires a proper representation of the contact interfaces. One of the methods in representing the behavior of two surfaces in contact is by using the parameter of contact stiffness. In this study, the effect of surface texture on contact stiffness is analyzed. the texture was used in order to reduce the randomness of surface roughness. the soft material was chosen to achieve a pure elastic contact thus preventing plastic deformation to the asperities. the analysis was conducted by using an indentation method employing a steel ball with a relatively small indentation force. the result show contact stiffness values of the textured surfaces were smaller than that of smooth surface. This is particularly observed at low normal load at which total deformation of the surface is relatively small compared to the asperities height. This decrease in the contact stiffness value of the textured surfaces can be related to the reduction in the real contact area.
Key words: contact stiffness / surface texture / soft material
© The Authors, published by EDP Sciences, 2018
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