Reliability-based optimal design of a bistable compliant mechanism

L. L. Howell, S. S. Rao, A. Midha

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

Abstract

Compliant mechanisms obtain at least some of their motion from the deflection of their flexible members. Advantages of such mechanisms include the reduction of manufacturing and assembly cost and time. Bistable mechanisms are particularly useful in applications where two stable equilibrium positions are required, such as switches, gates, and closures. Fatigue is a major concern in many compliant mechanisms due to the cyclic stresses induced on the flexible members. In this paper, a method for the probabilistic design of a bistable complaint slider-crank mechanism is proposed. Link lengths, material properties, and cross-section dimensions are taken as random variables. Probabilistic constraints on the maximum and minimum required input torque, location of stable equilibrium position, and overall size are included. The objective function is the maximization of the mechanism reliability is fatigue. Several design studies are performed to gain future insight into the nature of the problem.

Original languageEnglish (US)
Title of host publicationAdvances in Design Automation
EditorsMo Shahinpoor, H.S. Tzou
PublisherPubl by ASME
Pages441-448
Number of pages8
ISBN (Print)0791811816
StatePublished - Dec 1 1993
Externally publishedYes
Event14th Biennial Conference on Mechanical Vibration and Noise - Albuquerque, NM, USA
Duration: Sep 19 1993Sep 22 1993

Publication series

NameAmerican Society of Mechanical Engineers, Design Engineering Division (Publication) DE
Volume65 pt 1

Other

Other14th Biennial Conference on Mechanical Vibration and Noise
CityAlbuquerque, NM, USA
Period9/19/939/22/93

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Howell, L. L., Rao, S. S., & Midha, A. (1993). Reliability-based optimal design of a bistable compliant mechanism. In M. Shahinpoor, & H. S. Tzou (Eds.), Advances in Design Automation (pp. 441-448). (American Society of Mechanical Engineers, Design Engineering Division (Publication) DE; Vol. 65 pt 1). Publ by ASME.