On an optimal property of compliant topologies

Saxena, Anupam; Ananthasuresh, G. K.

doi:10.1007/s001580050084

Cited by 204 publications

(109 citation statements)

References 15 publications

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“…[9][10][11][12] In topology optimization, the material layout is optimized within the specified design area such that the resulting layout meets the performance targets, e.g., maximizing structural stiffness while using the permitted amount of material.…”

Section: Phase 1: Topology Optimizationmentioning

confidence: 99%

Multiphase design exploration method for lightweight structural design: Example of vehicle mounted antenna-supporting structure

Jang

Goh

Choi

2015

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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In this study, we design a lightweight antenna-supporting structure for a vehicle-mounted radar system using a multiphase design exploration method. In the first phase of the approach, structural topology within a given design domain is optimized in order to reduce the weight and increase the structural integrity applying various design scenarios, which provides several preliminary structural layouts. Inspecting the commonalities and differences of the preliminary layouts, key shape (i.e., geometry) parameters in an initial layout to be further explored are chosen. In the second phase, design variables, the chosen shape parameters and properties of its material are concurrently explored to satisfy the given system requirements. For the concurrent design exploration of the materials and structures, the inductive design exploration method is employed for obtaining feasible ranged sets of design variables, instead of a single optimum solution. In this way, a designer may simply make a robust choice among the feasible sets under various sources of uncertainties and multiple performance requirements.

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Section: Phase 1: Topology Optimizationmentioning

confidence: 99%

Multiphase design exploration method for lightweight structural design: Example of vehicle mounted antenna-supporting structure

Jang

Goh

Choi

2015

Int. J. of Precis. Eng. and Manuf.-Green Tech.

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“…The advent of this approach has brought about many advances in numerous fields and lends itself particularly well to the space industry. Topology optimization (Sigmund, 1997;Frecker et al, 1997;Kim et al, 2006;Saxena and Ananthasuresh, 2000), another method of compliant mechanism design, can be used in the conceptual phase of design to arrive at the optimal geometry for specific loading and boundary conditions. These and other tools, further discussed in Sect.…”

Section: Proposed Research Directionmentioning

confidence: 99%

“…Significant advances have been made in compliant mechanism: -analysis and design methods (e.g. the pseudo-rigidbody model (Howell, 2001), topology optimization (Sigmund, 1997, Frecker et al, 1997Kim et al, 2006;Saxena and Ananthasuresh, 2000), and FACT (Hopkins and Culpepper, 2010a,b;Chen and Culpepper, 2006)) -advanced applications (e.g. lamina emergent mechanisms (Jacobsen et al, 2010;Winder et al, 2008;Albrechtsen et al, 2010;Gollnick, 2010), bistable mechanisms (Jensen and Howell, 2003;Howell, 2001;Qiu et al, 2004;Lusk and Howell, 2008a), constant-force mechanisms (Weight, 2001;Howell, 2001), metamorphic mechanisms Jones, 2005, 1999;Wuxiang and Xilun, 2009), large-displacement mechanisms (Trease et al, 2005;Howell, 2001), contact-aided mechanisms Ananthasuresh, 2007, 2004;Cannon and Howell, 2005;Halverson et al, 2010;Mehta et al, 2009), spherical mechanisms (Wilding et al, 2011Lusk and Howell, 2008b), embedded actuators and sensors (Trease and Kota, 2009), and statically balanced mechanisms (Hoetmer et al, 2010(Hoetmer et al, , 2009 The research in compliant mechanisms and their resulting components and systems are available to address many of the issues related to space mechanisms.…”

Section: Current State Of Compliant Mechanismsmentioning

confidence: 99%

Compliant space mechanisms: a new frontier for compliant mechanisms

2011

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Abstract. Compliant mechanisms offer distinct advantages for use in space that can address many of the issues encountered with current rigid-link space mechanisms. Compliant space mechanisms are defined as moveable mechanical assemblies that achieve their desired motion, force, or displacement by means of the deflection of flexible members and can perform a necessary function in the environments of launch and space. Many current space mechanisms are already highly optimized, yet they still experience inherent challenges, and it is unclear if significant improvements in performance can be made by continuing to refine current designs. Compliant space mechanisms offer a promising opportunity to change the fundamental approach to achieving controlled motion in space systems and have potential for dramatic increases in mechanism performance given the constraints of the space environment. This paper proposes the merger of the fields of compliant mechanisms and space mechanisms as a future direction of research in compliant mechanisms, discusses in detail the motivation to do so, and addresses the key factors of applying compliant mechanism technology to space mechanisms.

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“…At the input port ω in , an input force F in is applied, while the displacement magnitude u out at the output port ω out is computed and projected onto a given direction indicated by the vector l out . The displacement over the output port ω out in a specified direction l out can be used as a measure for the intended flexibility in a compliant mechanism (see (Saxena et al,, 2000)). …”

Section: Introductionmentioning

confidence: 99%