iMechanica - stiffness-tunable
https://imechanica.org/taxonomy/term/12371
enFast-Response, Stiffness-Tunable Soft Actuator by Hybrid Multimaterial 3D Printing
https://imechanica.org/node/23021
<div class="field field-name-taxonomy-vocabulary-6 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/76">research</a></div></div></div><div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/9171">3D printing</a></div><div class="field-item odd"><a href="/taxonomy/term/12370">fast-response</a></div><div class="field-item even"><a href="/taxonomy/term/11905">soft robots</a></div><div class="field-item odd"><a href="/taxonomy/term/12371">stiffness-tunable</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><span>ttps://onlinelibrary.wiley.com/doi/full/10.1002/adfm.201806698</span></p>
<p><span>Fast‐Response, Stiffness‐Tunable Soft Actuator by Hybrid Multimaterial 3D Printing</span>
</p><p><span>Yuan-Fang Zhang, Ningbin Zhang, Hardik Hingorani, Ningyuan Ding, Dong Wang, </span>Chao Yuan, Biao Zhang, Guoying Gu,* and Qi Ge*</p>
<p><span>Soft robots have the appealing advantages of being highly flexible and </span><span>adaptive to complex environments. However, the low-stiffness nature of </span><span>the constituent materials makes soft robotic systems incompetent in tasks </span><span>requiring relatively high load capacity. Despite recent attempts to develop </span><span>stiffness-tunable soft actuators by employing variable stiffness materials </span><span>and structures, the reported stiffness-tunable actuators generally suffer from </span><span>limitations including slow responses, small deformations, and difficulties in </span><span>fabrication with microfeatures. This work presents a paradigm to design and </span><span>manufacture fast-response, stiffness-tunable (FRST) soft actuators via hybrid </span><span>multimaterial 3D printing. The integration of a shape memory polymer layer </span><span>into the fully printed actuator body enhances its stiffness by up to 120 times </span><span>without sacrificing flexibility and adaptivity. The printed Joule-heating circuit </span><span>and fluidic cooling microchannel enable fast heating and cooling rates and </span><span>allow the FRST actuator to complete a softening–stiffening cycle within 32 s. </span><span>Numerical simulations are used to optimize the load capacity and thermal </span><span>rates. The high load capacity and shape adaptivity of the FRST actuator are </span><span>finally demonstrated by a robotic gripper with three FRST actuators that can </span><span>grasp and lift objects with arbitrary shapes and various weights spanning </span><span>from less than 10 g to up to 1.5 kg.</span></p>
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</div></div></div>Mon, 21 Jan 2019 02:26:56 +0000KevinGE23021 at https://imechanica.orghttps://imechanica.org/node/23021#commentshttps://imechanica.org/crss/node/23021Error | iMechanica