Building block method: a bottom-up modular synthesis methodology for distributed compliant mechanisms

Abstract. Synthesizing topologies of compliant mechanisms are based on rigid-link kinematic designs or completely automated optimization techniques. These designs yield mechanisms that match the kinematic specifications as a whole, but seldom yield user insight on how each constituent member contributes towards the overall mechanism performance. This paper reviews recent developments in building block based design of compliant mechanisms. A key aspect of such a methodology is formulating a representation of compliance at a (i) single unique point of interest in terms of geometric quantities such as ellipses and vectors, and (ii) relative compliance between distinct input(s) and output(s) in terms of load flow. This geometric representation provides a direct mapping between the mechanism geometry and their behavior, and is used to characterize simple deformable members that form a library of building blocks. The design space spanned by the building block library guides the decomposition of a given problem specification into tractable sub-problems that can be each solved from an entry in the library. The effectiveness of this geometric representation aids user insight in design, and enables discovery of trends and guidelines to obtain practical conceptual designs.

[1]  Arthur G. Erdman,et al.  Mechanism Design : Analysis and Synthesis , 1984 .

[2]  Neil Sclater,et al.  Mechanisms and Mechanical Devices Sourcebook , 1991 .

[3]  Sridhar Kota,et al.  Conceptual design of mechanisms based on computational synthesis and simulation of kinematic building blocks , 1992 .

[4]  G. K. Ananthasuresh.  A new design paradigm for micro-electro-mechanical systems and investigations on the compliant mechanisms synthesis. , 1994 .

[5]  J. Arora,et al.  New concepts of transferred and potential transferred forces in structures , 2001 .

[6]  G. K. Ananthasuresh,et al.  A computational approach to number synthesis of linkages , 2003 .

[7]  Harvey Lipkin,et al.  Design and Analysis of Remote Center of Compliance Structures , 2003, J. Field Robotics.

[8]  G. K. Ananthasuresh,et al.  Design of Distributed Compliant Mechanisms , 2003 .

[9]  Charles J. Kim,et al.  A conceptual approach to the computational synthesis of compliant mechanisms. , 2005 .

[10]  Shorya Awtar,et al.  Characteristics of Beam-Based Flexure Modules , 2007 .

[11]  Stephen L. Canfield,et al.  Multi-Objective Optimization of Compliant Mechanisms Including Failure Theories , 2007 .

[12]  David J. Cappelleri,et al.  Flexible automation of micro and meso-scale manipulation tasks with applications to manufacturing & biotechnology , 2008 .

[13]  Charles Kim.  Functional Characterization of Compliant Building Blocks Utilizing Eigentwists and Eigenwrenches , 2008 .

[14]  Charles Kim,et al.  A Building Block Approach to the Conceptual Synthesis of Compliant Mechanisms Utilizing Compliance and Stiffness Ellipsoids , 2008 .

[15]  Jonathan B. Hopkins,et al.  Corrigendum to Synthesis of multi-degree of freedom, parallel flexure system concepts via Freedom and Constraint Topology (FACT)—Part I: Principles , 2010 .

[16]  Charles J. Kim,et al.  Toward the Design of a Decoupled, Two-Dimensional, Vision-Based μN Force Sensor , 2010 .

[17]  Jonathan B. Hopkins,et al.  Synthesis of multi-degree of freedom, parallel flexure system concepts via freedom and constraint topology (FACT). Part II: Practice , 2010 .

[18]  Sridhar Kota,et al.  Load-Transmitter Constraint Sets: Part I—An Effective Tool for Visualizing Load Flow in Compliant Mechanisms and Structures , 2010 .

[19]  Sridhar Kota,et al.  An intrinsic geometric framework for the building block synthesis of single point compliant mechanisms , 2011 .