4.6 Article

Principle of stiffness variation based on matching composite structures with fibers

期刊

SMART MATERIALS AND STRUCTURES
卷 29, 期 9, 页码 -

出版社

IOP PUBLISHING LTD
DOI: 10.1088/1361-665X/aba491

关键词

soft robot; stiffness variation; structural stiffness; fibrous composite

资金

  1. National Natural Science Foundation of China [91648106]
  2. Shandong Provincial Natural Science Foundation [ZR2016EEM16]
  3. Primary Research & Development Plan of the Shandong Province [2017GGX10128]
  4. Foundation of public service platform for innovation and industrialization of robotics and intelligent equipment [2015ZD01]

向作者/读者索取更多资源

Stiffness adjustment is essential to enhance the environment adaptability of many machines and soft robots. In this paper, a principle for stiffness variation based on fiber-reinforced structure matching (meshing) was proposed. By this proposed method, a flexible flat structure can change its stiffness more readily compared to existing approaches. The basic principle is that two soft laminates made of fibrous composites have complementary shapes that can interlock with each other in a controlled way; the resulting structure will be soft when the two laminates separate, but rigid when the two laminates interlock with each other. Therefore, the stiffness of a structure can be adjusted by altering between the separated and matched states. The principle was validated by a matching structure composed of two commercial toothed belts, which can change its stiffness up to 40 times just by a small vacuum pressure of 0.4 atm.

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