Biomechanics Model Of Interactive Tactile Waterjet And Research On Mechanism Of Tactile Perception

As we all know,tactile information really helps to enhance user’s sense of immersion and telepresence.However,researches about tactile interaction which is a piece of promising technique full of values of application are still quite few nowadays.This paper tries to set foot in the interesting field of interactive waterjet tactile-perception.It involves Finite Element Method,and aims at the exploration about the characteristics and mechanism of tactile perception when waterjet in different conditions act as different loads on a fingertip of human,so as to achieve some guidance to the parameter design of tactile-waterjet interactive device.This paper mainly concludes two parts,FEM simulative analysis and relative experiments.On the one hand,based on the complex anatomical structure of human finger and material property of all tissues in it,three-dimensional nonlinear biomechanical model of finger is established,besides,a series of models of flow fields representing different loads are also established.And then,representative parameters of tactile perception are discussed and determined;relative engineering data of models are also determined by referring to many research achievements published.After these preparations,such problems mentioned during paragraph two are simulated and calculated by the method of fluid-structure iteration in Workbench,a piece of FEM software,to get time-dependent responses such as finger deformation,strain energy density distribution,etc.On the other hand,simple waterjet device is built and related experiments are conducted to acquire practical pressures and deformations in different conditions of point load of waterjet,as well as experimental observations among point loads and linear loads,as well as facial loads,so as to verify finite element models proposed in this paper and to give qualitative analysis of mechanical response of fingertip to waterjet load furthermore.