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Stress‐Constrained Topology Optimization With the Augmented Lagrangian Method: A Comparative Study of Subproblem Solvers
Örebro University, School of Science and Technology.ORCID iD: 0000-0002-0684-9262
Mechanical Engineering Graduate Program, Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil.
2025 (English)In: International Journal for Numerical Methods in Engineering, ISSN 0029-5981, E-ISSN 1097-0207, Vol. 126, no 12, article id e70066Article in journal (Refereed) Published
Abstract [en]

Incorporating stress constraints in topology optimization is a challenging task due to the large number of constraints in the formulation. One effective strategy to address this challenge is the augmented Lagrangian (AL) method, which transforms the original stress-constrained problem into a sequence of subproblems with only bound constraints. The effectiveness of the AL method heavily depends on the optimization method used to solve these subproblems. This work performs a comparative study of six optimization solvers: The method of moving asymptotes (MMA), the steepest descent method with move limits (SDM), the spectral projected gradient (SPG), and the limited-memory BFGS with bound constraints (L-BFGS-B), along with two proposed adaptations, steepest descent method with move limits—Barzilai–Borwein (SDMBB) and spectral projected gradient with move limits (SPGM). These methods are evaluated in the context of the volume minimization problem with local stress constraints. The solutions are compared in terms of performance, defined as the final volume fraction, and efficiency, measured by the number of state and adjoint analyses required. A mesh dependence study is conducted to assess the robustness of each method across different mesh sizes, including high-resolution cases with approximately 1.8 million elements. SDMBB exhibits the highest efficiency, while SPGM achieves the best performance, followed by SDM. The MMA, SPG, and L-BFGS-B show limitations in high-resolution problems or fail to meet specific stopping criteria. The results demonstrate that the choice of the optimization solver significantly affects the efficiency of the AL method, as well as the performance and mesh dependence of the solutions. Furthermore, this study identifies the most promising methods for solving large-scale stress-constrained problems.

Place, publisher, year, edition, pages
John Wiley & Sons, 2025. Vol. 126, no 12, article id e70066
Keywords [en]
augmented Lagrangian method, comparative study, high-resolution analysis, optimization solvers, stress constraints, topology optimization
National Category
Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:oru:diva-121731DOI: 10.1002/nme.70066ISI: 001518748200009Scopus ID: 2-s2.0-105008424043OAI: oai:DiVA.org:oru-121731DiVA, id: diva2:1973094
Available from: 2025-06-19 Created: 2025-06-19 Last updated: 2026-01-23Bibliographically approved

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Da Silva, Gustavo Assis

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