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Multi-objective reliability based design optimization using Kriging surrogate model for cementless hip prosthesis.

Khalil Dammak1, Abdelkhalak El Hami1

  • 1Laboratory of Mechanics of Normandy (LMN), INSA Rouen Normandy, University of Rouen, St Etienne de Rouvray, France.

Computer Methods in Biomechanics and Biomedical Engineering
|June 2, 2020
PubMed
Summary

This study introduces a multi-objective reliability-based design optimization for cementless hip prostheses. It ensures reliable implant designs by accounting for uncertainties, improving performance through advanced computational methods.

Keywords:
C-NSGA-IIHip prosthesisMORBDOpareto optimal frontsurrogate models

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Area of Science:

  • Biomedical Engineering
  • Mechanical Engineering
  • Computational Science

Background:

  • Cementless hip prosthesis design is crucial for improving implant performance.
  • Deterministic optimization methods often yield unreliable designs due to unaddressed uncertainties.
  • Incorporating reliability into the design process is essential for robust prosthesis performance.

Purpose of the Study:

  • To propose a multi-objective reliability-based design optimization (MORBDO) procedure for cementless hip prostheses.
  • To enhance the reliability and performance of cementless hip prosthesis designs.
  • To integrate finite element simulation with advanced optimization techniques.

Main Methods:

  • A multi-objective reliability-based design optimization (MORBDO) procedure was developed.
  • Finite element simulation (FES) was combined with surrogating techniques and an optimization algorithm.
  • Meta-models were constructed, validated, and compared using error predictions and cross-validation (CV).

Main Results:

  • The proposed MORBDO methodology effectively generated well-distributed Pareto solutions.
  • The constrained non-dominated sorting genetic algorithm (C-NSGA-II) coupled with a hybrid method (HM) proved capable.
  • Validated meta-models demonstrated the robustness of the optimization approach.

Conclusions:

  • The MORBDO procedure offers a reliable approach for cementless hip prosthesis design.
  • Accounting for uncertainties is critical for achieving dependable implant performance.
  • The developed methodology provides a framework for optimizing complex biomedical devices.