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 compliant 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 in fatigue. Several design studies are performed to gain further insight into the nature of the problem.

Original languageEnglish (US)
Title of host publication19th Design Automation Conference
Subtitle of host publicationVolume 1 - Mechanical System Dynamics; Concurrent and Robust Design; Design for Assembly and Manufacture; Genetic Algorithms in Design and Structural Optimization
PublisherAmerican Society of Mechanical Engineers (ASME)
Pages441-448
Number of pages8
ISBN (Electronic)9780791811818
DOIs
StatePublished - 1993
Externally publishedYes
EventASME 1993 Design Technical Conferences, DETC 1993 - Albuquerque, United States
Duration: Sep 19 1993Sep 22 1993

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
VolumePart F167972-13

Conference

ConferenceASME 1993 Design Technical Conferences, DETC 1993
Country/TerritoryUnited States
CityAlbuquerque
Period9/19/939/22/93

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Modeling and Simulation

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