Implementation of a Contact Model in a Topology Optimization Method for the Design of Compliant Mechanisms for Thermal Control

Thurier, Pierre F; Lesieutre, George A.; Frecker, Mary; Adair, James H.

doi:10.2514/6.2015-1052

Cited by 2 publications

(2 citation statements)

References 15 publications

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“…The materials are assumed to be isotropic, and contact is not considered. For additional details on the finite element formulation used in this article, refer to Thurier (2014).…”

Section: Topology Optimization Methodsmentioning

confidence: 99%

A two-material topology optimization method for structures under steady thermo-mechanical loading

Thurier¹,

Lesieutre

Frecker

et al. 2019

Journal of Intelligent Material Systems and Structures

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This article explores a topology optimization method for the design of two-material structures that must operate under mechanical and thermal loads, including heat fluxes at the boundaries. A three-phase design domain is filled by two isotropic materials and a void phase. There are two novel aspects of this work: (1) the consideration of multiple materials when only the amount of void is constrained, and (2) the incorporation of heat flux boundary conditions, as opposed to uniform heating of the structure, in the multi-physics analysis. This topology optimization approach is expected to be useful in the development of passive thermal control interfaces for spacecraft thermal control.

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“…The materials are assumed to be isotropic, and contact is not considered. For additional details on the finite element formulation used in this article, refer to Thurier (2014).…”

Section: Topology Optimization Methodsmentioning

confidence: 99%

A two-material topology optimization method for structures under steady thermo-mechanical loading

Thurier¹,

Lesieutre

Frecker

et al. 2019

Journal of Intelligent Material Systems and Structures

View full text Add to dashboard Cite

show abstract

“…C3Ms for energy absorption were designed and investigated in [15], followed by stress relief analyses in [16][17][18]. C3Ms of two materials have been explored for passive thermal control in [19,20].…”

Section: Introductionmentioning

confidence: 99%

Tailoring energy absorption with functional grading of a contact-aided compliant mechanism

Jovanova

Nastevska

Frecker

2019

Smart Mater. Struct.

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Functional grading can be used for spatial control of local mechanical properties and control of the stiffness and energy absorption of a structure. Cellular contact-aided compliant mechanisms (C3M) are cellular structures with integrated self-contact mechanisms, i.e. the compliant segments experience self-contact during deformation. The contact changes the load path and the C3M cells can be tailored for a specific structural application, such as energy absorption. The focus of the paper is on C3M made of nickel titanium which exploit self contact, the superelastic effect, and functional grading to improve performance and increase energy absorption. Continuous and discrete functional grading models are implemented in finite element analyses of the C3M cells. It is found that there is a complex relationship among self contact, superelastic properties, and functional grading, which are tailored to improve the performance of C3M. The functionally graded cells can be realized through metal additive manufacturing of NiTi, where functional grading and superelasticity are achieved by varying the material composition locally.

show abstract

Implementation of a Contact Model in a Topology Optimization Method for the Design of Compliant Mechanisms for Thermal Control

Cited by 2 publications

References 15 publications

A two-material topology optimization method for structures under steady thermo-mechanical loading

A two-material topology optimization method for structures under steady thermo-mechanical loading

Tailoring energy absorption with functional grading of a contact-aided compliant mechanism

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