A finite element model is developed to study the behaviour of adhesion-governed contact of soft elastic wall-shaped projections and a rigid flat under normal and tangential loading. Bi-linear cohesive zone material is implemented to model the adhesive interaction of the contact, and Tresca’s law of friction is used to model the tangential response. An assessment of maximum tangential load capacity of attachment devices based on dry adhesive contact is performed using the described model and the effects of geometrical properties are investigated. The value of maximum shear stress in the contact of PVS and a silicon flat is identified. The model reveals that the tangential load capacity of the wall-shaped projection is independent of normal load, and that increasing the length of the adhesive flap, as well as decreasing its thickness provides better tangential load capacity.

中文翻译：

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仿生壁状分层微观结构：滑动起始的数值模拟。

建立了一个有限元模型来研究在法向和切向载荷下，软弹性壁状凸起和刚性平面之间的附着控制接触行为。使用双线性内聚区材料来建模接触的粘合剂相互作用，并使用Tresca摩擦定律来建模切向响应。使用所描述的模型对基于干粘合剂接触的附着装置的最大切向负载能力进行了评估，并研究了几何特性的影响。确定了PVS与硅平板接触时的最大剪切应力值。该模型表明，壁状凸起的切向载荷能力与法向载荷无关，并且增加了胶粘片的长度，