The Spring-Connected Rigid Block Model Based Automatic Synthesis of Planar Linkage Mechanisms: Numerical Issues and Remedies

Author:

Jun Nam Sang1,Jang Gang-Won2,Young Kim Yoon3

Affiliation:

1. Samsungtechwin R&D Center, Seongnam-si, Gyeonggi, 463-400, Korea

2. Faculty of Mechanical and Aerospace Engineering, Sejong University, Seoul 143-747, Korea

3. Mem. ASMEWCU Multiscale Design Division, School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-742, Korea

Abstract

Because it is difficult to select in advance an appropriate linkage for converting an input motion to a desired output motion, a linkage synthesis method that does not require any baseline linkage would be preferred. To this end, an optimization-based linkage synthesis method that employs a spring-connected rigid block model has recently been suggested and applied for open-path problems. The objective of this study is to expand the method for the synthesis of more complex linkage mechanisms such as closed-loop linkages. Because the direct application of the method originally developed for open-path problems causes several numerical difficulties for closed-loop problems, an alternative optimization-based synthesis formulation is proposed in this investigation. The effectiveness of the suggested formulation is verified through several case studies including the synthesis of mechanisms generating closed paths.

Publisher

ASME International

Subject

Computer Graphics and Computer-Aided Design,Computer Science Applications,Mechanical Engineering,Mechanics of Materials

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