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为研究模拟再现虚拟物体的几何形状、材质以及粗糙度等属性信息,提出基于单喷嘴喷气再现点触觉的方法,并建立手指皮肤和喷嘴的流固耦合有限元模型.将触摸小球时采用有限元模型的计算结果作为标准来分析气动喷嘴再现点触觉.提出有效触感宽度的概念,结合应变能密度及SS率等表征触觉的物理量分析了喷嘴直径、接触高度和入口压力对点触觉的影响.实验表明,分析结论与实验结果相符,为气动喷嘴设计提供了很好的参考依据.
In order to study the attribute information such as geometric shape, material and roughness of simulating reproduction virtual object, a method based on single nozzle jet rendering point touch is proposed, and the fluid-solid coupling finite element model of finger skin and nozzle is established. Element model is used as a standard to analyze the tactile point of the air jet reproduction point.The concept of effective tactile width is proposed, and the influence of nozzle diameter, contact height and inlet pressure on the tactile sensation is analyzed by combining physical properties such as strain energy density and SS rate. Experiments show that the conclusions of the analysis are in good agreement with the experimental results and provide a good reference for the design of pneumatic nozzle.