Abstract
Surface texturing is a design technique to generate irregularities on the surface of a product for changing touch feeling or friction properties. In this research, we propose a numerical method for designing a macro-size surface texture recognized by touching with a finger with the aim of achieving any tactile sensations. Based on the response surface method, the shape design variables are assigned to the orthogonal array after parametrizing the surface texture. Then, the surface texture models are created based on orthogonal array. The sliding and contact FE analyses are performed using the surface texture models and a finger model with the mechanoreceptors inside. The time-dependent stress data of the mechanoreceptor elements are used to evaluate the dynamic characteristics between the surface texture and the finger. Using the response surfaces of the dynamic characteristics, the optimum shape design parameters are determined for optimization problems with an objective and constraints condition for designing a macro-size surface texture. The effectiveness of the proposed method was confirmed through the numerical results.
