Abstract

An approach to producing interfaces with tailored and repeatable normal contact stiffness using micropatterned surfaces is developed. A finite element model is first used to design square wave interfaces having a range of stiffnesses, and these are fabricated in polycarbonate via a microfabrication process. Results demonstrate that the contact stiffnesses of the fabricated interfaces are both tailorable and repeatable. The approach can be broadened to other materials and is useful for applications requiring specified interface stiffness. Finally, even with these deterministic interfaces, we show that low levels of roughness on the surface features are sufficient to produce a load-dependent contact stiffness at lower loads. Therefore, tailorability is mostly applicable above this limit where total contact stiffness converges to a load-independent value.

Graphic Abstract

中文翻译：

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通过微图案接口可定制和可重复的法向接触刚度

摘要

开发了一种使用微图案表面生成具有定制和可重复法向接触刚度的界面的方法。有限元模型首先用于设计具有一系列刚度的方波界面，这些界面是通过微加工工艺在聚碳酸酯中制造的。结果表明，制造的界面的接触刚度既可裁剪又可重复。该方法可以扩展到其他材料，适用于需要指定界面刚度的应用。最后，即使使用这些确定性接口，我们也表明表面特征上的低粗糙度水平足以在较低负载下产生依赖于负载的接触刚度。所以，

图形摘要