Topological Design of Large-displacement Compliant Mechanisms Considering Global Stress Constraints

Zhan, J; Peng, Y; Luo, Z; Liu, M

Topological Design of Large-displacement Compliant Mechanisms Considering Global Stress Constraints

Zhan, J Peng, Y Luo, Z

Liu, M

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Publisher:: Chinese Society of Agricultural Machinery
Publication Type:: Journal Article
Citation:: Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery, 2021, 52, (2), pp. 408-415
Issue Date:: 2021-02-25

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Field	Value	Language
dc.contributor.author	Zhan, J
dc.contributor.author	Peng, Y
dc.contributor.author	Luo, Z https://orcid.org/0000-0002-6953-3986
dc.contributor.author	Liu, M
dc.date.accessioned	2022-05-27T01:29:38Z
dc.date.available	2022-05-27T01:29:38Z
dc.date.issued	2021-02-25
dc.identifier.citation	Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery, 2021, 52, (2), pp. 408-415
dc.identifier.issn	1000-1298
dc.identifier.issn	1000-1298
dc.identifier.uri	http://hdl.handle.net/10453/157737
dc.description.abstract	To avoid static strength failure caused by large deflection, a design method for topology optimization of large-displacement compliant mechanisms considering global stress constraints was proposed. The Total-Lagrangian formulation and the incremental Newton-Raphson method were applied to solve the geometrically nonlinear response of the mechanisms. The element energy interpolation scheme for fictitious domain techniques was adopted to circumvent the non-convergence problem in the topology optimization of geometrical nonlinear problems. The maximum of the output displacement of the compliant mechanisms was developed as the optimization objective. The local stresses constraints for all elements were aggregated into a global stress constraint using the improved P-norm method. The optimization model for topology optimization of compliant mechanism with geometrical nonlinearities considering global stress constraints was established. The method of moving asymptotes was applied to solve the topology optimization problem for the design of large-displacement compliant mechanisms with global stress constraints. The results of numerical examples showed that large-displacement compliant mechanisms obtained by topology optimization with global stress constraint can effectively satisfy the stress constraints. As the allowable stress limit was decreased, the hinge area in the compliant mechanism configurations was gradually elongated, which can make the compliance of the mechanisms be more uniformly distributed. However, the output displacement of the mechanisms was gradually decreased.
dc.language	en
dc.publisher	Chinese Society of Agricultural Machinery
dc.relation.ispartof	Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery
dc.relation.isbasedon	10.6041/j.issn.1000-1298.2021.02.041
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject.classification	Mechanical Engineering & Transports
dc.title	Topological Design of Large-displacement Compliant Mechanisms Considering Global Stress Constraints
dc.type	Journal Article
utslib.citation.volume	52
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Mechanical and Mechatronic Engineering
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2022-05-27T01:29:36Z
pubs.issue	2
pubs.publication-status	Published
pubs.volume	52
utslib.citation.issue	2

Abstract:

To avoid static strength failure caused by large deflection, a design method for topology optimization of large-displacement compliant mechanisms considering global stress constraints was proposed. The Total-Lagrangian formulation and the incremental Newton-Raphson method were applied to solve the geometrically nonlinear response of the mechanisms. The element energy interpolation scheme for fictitious domain techniques was adopted to circumvent the non-convergence problem in the topology optimization of geometrical nonlinear problems. The maximum of the output displacement of the compliant mechanisms was developed as the optimization objective. The local stresses constraints for all elements were aggregated into a global stress constraint using the improved P-norm method. The optimization model for topology optimization of compliant mechanism with geometrical nonlinearities considering global stress constraints was established. The method of moving asymptotes was applied to solve the topology optimization problem for the design of large-displacement compliant mechanisms with global stress constraints. The results of numerical examples showed that large-displacement compliant mechanisms obtained by topology optimization with global stress constraint can effectively satisfy the stress constraints. As the allowable stress limit was decreased, the hinge area in the compliant mechanism configurations was gradually elongated, which can make the compliance of the mechanisms be more uniformly distributed. However, the output displacement of the mechanisms was gradually decreased.

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http://hdl.handle.net/10453/157737