Development of a Methodology for Pseudo-Rigid-Body Models of Compliant Beams with Inserts, and Experimental Validation
Compliant mechanisms have shown a great deal of potential, in just a few decades of its development, in providing innovative solutions to design problems. However, their use has been limited due to challenges associated with the materials. With ever increasing focus on the applications of compliant mechanisms, it is necessary to find alternatives to the existing material usage and methods of prototyping. This paper presents a methodology for the design of compliant segments and compliant mechanisms with improved creep resistance and fatigue life properties using the current state-of-the-art materials. The methodology proposes using a stronger material at the core of a softer casing. The paper provides an equivalent pseudo-rigid-body model and a closed-form elliptic integral formulation for a fixed-free compliant segment with an insert. The equivalent pseudo-rigid-body model is verified experimentally for the prediction of beam end point displacements. The paper also presents experimental results that show improvements obtained in the creep recovery properties as expected using the proposed design philosophy.
A. Midha et al., "Development of a Methodology for Pseudo-Rigid-Body Models of Compliant Beams with Inserts, and Experimental Validation," Proceedings of the ASME 2015 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference (2015, Boston, MA), vol. 5A, American Society of Mechanical Engineers (ASME), Aug 2015.
The definitive version is available at https://doi.org/10.1115/DETC2015-47943
ASME 2015 International Design Engineering Technical Conferences & Computers and Information in Engineering Conference, IDETC/CIE 2015 (2015: Aug. 2-5, Boston, MA)
Mechanical and Aerospace Engineering
Keywords and Phrases
Composite micromechanics; Creep; Creep resistance; Design; Fatigue of materials; Mechanisms; Motion estimation; Rigid structures; Compliant beams; Creep-recovery properties; Design philosophy; Design problems; Elliptic integrals; Experimental validations; Innovative solutions; Pseudo-rigid body models; Compliant mechanisms
International Standard Book Number (ISBN)
Article - Conference proceedings
© 2015 American Society of Mechanical Engineers (ASME), All rights reserved.