Target shape optimization of 3D compliant mechanism with superelastic joints and shape memory actuation

Jovana Jovanova, Angela Nastevska, Mary Frecker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The shape memory effect and the superelasticity of nickel titanium (NiTi) alloys are beneficial for design of compliant mechanisms. The superelastic behavior of NiTi can be tailored for optimal flexure design in the compliant mechanism, allowing large deformation and shape change. The shape memory effect can also be utilized to actuate the compliant mechanism flexures enabling programing of the material to take on variety of shapes at different temperatures over time. The compliant mechanism analyzed in this work is inspired from 3D multi leg spider-like locomotion, enabling movement in all directions by triggering different target shapes in time. The control of the material spatial distribution facilitated by additive manufacturing will enable tailored superelastic and shape memory behavior in the flexures of the multifunctional 3D compliant mechanism. Design optimization and analyses as well as overall shape change are explored in this work. Superelastic joints are introduced as flexures to enable segment flexibility. The temperature change is used for actuation taking in consideration different initial strain conditions.

Original languageEnglish (US)
Title of host publicationASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2019
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791859131
DOIs
StatePublished - Jan 1 2019
EventASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2019 - Louisville, United States
Duration: Sep 9 2019Sep 11 2019

Publication series

NameASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2019

Conference

ConferenceASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2019
CountryUnited States
CityLouisville
Period9/9/199/11/19

All Science Journal Classification (ASJC) codes

  • Biomaterials
  • Civil and Structural Engineering

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    Jovanova, J., Nastevska, A., & Frecker, M. (2019). Target shape optimization of 3D compliant mechanism with superelastic joints and shape memory actuation. In ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2019 (ASME 2019 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2019). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/SMASIS2019-5639