Velcro-like fasteners based on NiTi micro-hook arrays
Velcro-like fasteners based on NiTi micro-hook arrays
复制标题
DOI：
10.1088/0964-1726/20/8/085027
复制
发表时间：
2011-07
影响因子：
4.1
通讯作者：
D. Vokoun;P. Sedlák;M. Frost;J. Pilch;D. Majtás;P. Šittner
中科院分区：
文献类型：
--
作者：
D. Vokoun;P. Sedlák;M. Frost;J. Pilch;D. Majtás;P. Šittner
最近开发的一种类似尼龙搭扣的紧固件利用了两个互锁的镍钛钩在拉开时的超弹性变形。本文的工作集中在脱钩过程的实验分析(不同温度下法向分离力的评估)和建模(用有限元实现的形状记忆合金模型进行模拟)。研究表明，与传统的尼龙搭扣相比，NiTi的非线性超弹性变形导致了其独特的性能，如高强度(∼15000 kg m−2)，强度随温度的升高而显著增加，吸收冲击载荷，抑制机械振动，无力接触或静默释放，以及在肮脏环境中更好地发挥作用。
A recently developed Velcro-like fastener utilizes superelastic deformation of two interlocked NiTi hooks when pulled apart. This work focuses on experimental analysis (evaluation of normal detachment force at different temperatures) and modeling (simulation by a finite element implemented SMA model) of the unhooking process. It is claimed that nonlinear superelastic deformation of NiTi leads to unique properties of the NiTi hook fasteners such as high strength (∼15 000 kg m − 2), a significant increase of strength with increasing temperature, absorption of impact loads, damping of mechanical vibrations, forceless contact or silent release and better functioning in dirty environments compared to conventional Velcro fasteners.