The remarkable tribological attributes of the gecko feet have grown much interest in the field of biomimetic tribology over the past two decades. It has been shown that the complexity of friction and adhesion phenomena made it difficult to transfer these exceptional properties into fully functional smart, dry, micro patterned adhesives. The latter, combined with the relative lack of literature on computational oriented studies on these phenomena, is the motive of the current work. Here, a 2D time-dependent finite element model of friction and adhesion attributed contact of polydimethysiloxane (PDMS) micro flaps with a smooth SiO 2 spherical surface is presented. The model is tested through simulations concerning changes in the disc curvature, the flap density, as well as different disc mounting heights, representing the effect of preload. Furthermore, the effect of tribological parameters of adhesion and friction coefficient is discussed. Finally, the effect of the use...

中文翻译：

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仿生壁虎 PDMS 微瓣与 SiO2 球面的摩擦和粘附归因接触的有限元模拟。

在过去的二十年里，壁虎脚的显着摩擦学特性引起了仿生摩擦学领域的极大兴趣。已经表明，摩擦和粘附现象的复杂性使得难以将这些特殊性能转移到功能齐全的智能、干燥、微图案粘合剂中。后者，再加上相对缺乏关于这些现象的计算导向研究的文献，是当前工作的动机。在这里，提出了具有光滑SiO 2 球形表面的聚二甲基硅氧烷（PDMS）微瓣的摩擦和粘附归因接触的二维时间相关有限元模型。该模型通过关于圆盘曲率、襟翼密度以及不同圆盘安装高度变化的模拟进行测试，代表预紧力的影响。此外，还讨论了摩擦学参数对粘附力和摩擦系数的影响。最后，使用效果...