Stress-constrained topology optimization with precise and explicit geometric boundaries

Shakour, Emad

doi:10.1007/s00158-021-03115-7

Struct Multidisc Optim

2022

DOI: 10.1007/s00158-021-03115-7

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Stress-constrained topology optimization with precise and explicit geometric boundaries

Emad Shakour

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Cited by 9 publications

References 59 publications

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On the Use of Fidelity Transformation Method for Stress‐Constrained Reliability‐Based Topology Optimization of Continuum Structure With High Accuracy

Meng,

Qian,

Hao

2024

Numerical Meth Engineering

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Stress‐constrained reliability‐based topology optimization (RBTO) method has incurred considerable attention owing to its superiority of enhancing the structural safety. However, the traditional reliability methods encounter inaccurate issue for evaluating the failure probability of stress‐constrained structure. In this work, the failure mechanism of the stress‐constrained RBTO problem is analyzed for continuum structure, which reveals that the correlation between different stress constraints and utilization of aggregation function significantly impacts the accuracy. Then, a novel stress‐constrained system RBTO framework is suggested to enhance computational efficiency and accuracy for system reliability analysis. Furthermore, an accurate and efficient semi‐analytical method is suggested to approximate the performance functions through first‐order Taylor series expansion, in which the intricate implicit expressions are substituted by the straightforward analytic expressions. In addition, the fidelity transformation method is employed for converting the semi‐analytical RBTO method to classical RBTO method. To demonstrate the practicability of the proposed framework, three benchmark cases, including 2D and 3D problems, are tested. The results reveal that the proposed framework achieves high accuracy and efficiency.

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On the Use of Fidelity Transformation Method for Stress‐Constrained Reliability‐Based Topology Optimization of Continuum Structure With High Accuracy

Meng,

Qian,

Hao

2024

Numerical Meth Engineering

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Isogeometric analysis for solving discontinuous two-phase engineering problems with precise and explicit interface representation

Shakur

2024

Engineering with Computers

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Topology optimization of turbine disk considering maximum stress prediction and constraints

YAN

LIU

et al. 2023

Chinese Journal of Aeronautics

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Stress-constrained topology optimization with precise and explicit geometric boundaries

Cited by 9 publications

References 59 publications

On the Use of Fidelity Transformation Method for Stress‐Constrained Reliability‐Based Topology Optimization of Continuum Structure With High Accuracy

On the Use of Fidelity Transformation Method for Stress‐Constrained Reliability‐Based Topology Optimization of Continuum Structure With High Accuracy

Isogeometric analysis for solving discontinuous two-phase engineering problems with precise and explicit interface representation

Topology optimization of turbine disk considering maximum stress prediction and constraints

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