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Designing compliant self-locking structures using topology optimization

Granlund, Gunnar LU orcid and Wallin, Mathias LU (2025) In Structural and Multidisciplinary Optimization 68(4).
Abstract
This work presents a framework for designing self-locking 3D compliant structures using elasto-plastic topology optimization. Design updates are generated using the gradient-based method of moving asymptotes, while the material behavior is modeled under small strain elasto-plasticity. To accurately capture the Bauschinger effect that occur during reversed loading, kinematic hardening is a crucial component of the formulation. Unlike previous studies, our approach optimizes the unloaded and permanently deformed state, enabling the realization of self-locking functionality that relies on plastic deformation. Numerical results demonstrate the effectiveness of the proposed method in designing mechanisms with the desired self-locking behavior,... (More)
This work presents a framework for designing self-locking 3D compliant structures using elasto-plastic topology optimization. Design updates are generated using the gradient-based method of moving asymptotes, while the material behavior is modeled under small strain elasto-plasticity. To accurately capture the Bauschinger effect that occur during reversed loading, kinematic hardening is a crucial component of the formulation. Unlike previous studies, our approach optimizes the unloaded and permanently deformed state, enabling the realization of self-locking functionality that relies on plastic deformation. Numerical results demonstrate the effectiveness of the proposed method in designing mechanisms with the desired self-locking behavior, highlighting its potential for practical applications. (Less)
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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Topology optimization, Self-locking structures, Elasto-plasticity, Cyclic loading
in
Structural and Multidisciplinary Optimization
volume
68
issue
4
article number
77
pages
13 pages
publisher
Springer
external identifiers
  • scopus:105004017125
ISSN
1615-1488
DOI
10.1007/s00158-025-04012-z
language
English
LU publication?
yes
id
1826a743-4ae8-4e4b-b015-0ff85961fb32
date added to LUP
2025-05-05 10:47:05
date last changed
2025-10-14 11:12:55
@article{1826a743-4ae8-4e4b-b015-0ff85961fb32,
  abstract     = {{This work presents a framework for designing self-locking 3D compliant structures using elasto-plastic topology optimization. Design updates are generated using the gradient-based method of moving asymptotes, while the material behavior is modeled under small strain elasto-plasticity. To accurately capture the Bauschinger effect that occur during reversed loading, kinematic hardening is a crucial component of the formulation. Unlike previous studies, our approach optimizes the unloaded and permanently deformed state, enabling the realization of self-locking functionality that relies on plastic deformation. Numerical results demonstrate the effectiveness of the proposed method in designing mechanisms with the desired self-locking behavior, highlighting its potential for practical applications.}},
  author       = {{Granlund, Gunnar and Wallin, Mathias}},
  issn         = {{1615-1488}},
  keywords     = {{Topology optimization; Self-locking structures; Elasto-plasticity; Cyclic loading}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{4}},
  publisher    = {{Springer}},
  series       = {{Structural and Multidisciplinary Optimization}},
  title        = {{Designing compliant self-locking structures using topology optimization}},
  url          = {{http://dx.doi.org/10.1007/s00158-025-04012-z}},
  doi          = {{10.1007/s00158-025-04012-z}},
  volume       = {{68}},
  year         = {{2025}},
}