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<p>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.</p>

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Designing compliant self-locking structures using topology optimization

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年4月1日

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  • Gunnar Granlund,
  • Mathias Wallin

摘要

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.