توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱A STRUCTURAL MODEL FOR SIMULATING THE MECHANICAL RESPONSE OF FINGERTIP TO TACTILE STIMULI
نویسنده(ها): ، ، ،
اطلاعات انتشار: پانزدهمین کنفرانس سالانه مهندسی مکانیک، سال
تعداد صفحات: ۵
Response of the mechanoreceptors underlying the skin is greatly affected by its mechanical properties. Knowledge of this response is essential in designing artificial tactile devices such as minimally invasive tools and tactile displays. The purpose of present research is to simulate the biomechanics of tactile sensation during indentation tests. A two–dimensional finite element model has been used for the analysis incorporating the essential anatomical structures of a finger (i.e., skin, subcutaneous tissue, bone, and nail). The skin and subcutaneous tissue are assumed to be hyperelastic and viscoelastic. We obtained the stress, strain and deformation fields in indentation tests. It was noted that the skin away from the indenter was experiencing considerable amount of strain energy density. Also, the response of SAI afferents could be predicted from the proposed model. These results were in agreement with the results mentioned in other published experimental data.<\div>

۲DESIGN AND MODELING OF A NEW TYPE OF TACTILE SENSOR BASED ON THE DEFORMATION OF AN ELASTIC MEMBRANE
نویسنده(ها): ، ،
اطلاعات انتشار: پانزدهمین کنفرانس سالانه مهندسی مکانیک، سال
تعداد صفحات: ۶
This paper presents the design and modeling of a flexible tactile sensor, capable of measuring contactforce and softness of a contact soft tissue\sensed object. The sensor is made of polymer materials. This sensor can detect the 2D surface texture image, contact–force estimation and softness of the sensed object. It consists of a chamber for pneumatic actuation and a membrane with a mesa structure. Inner radius of the sensor element is 5mm and its outer radius is 7mm. The sensing mechanism is based on the novel contact deformation effect of a membrane. Determination of the contactforce and softness of sensed object is based on the amount and variations of out of plane deflection at the center of a circular membrane as a result of applied force or pressure on it. Furthermore, the size and shape can be easily tailored to the applications' requirements. This versatility facilitates the use of the sensor in smart applications where tactile information is used to create system intelligence. The proposed sensor with the potential for further miniaturization is suitable for using in medical applications, especially in minimally
invasive surgery (MIS).<\div>
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