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<p>In this study, we extend the fully coupled finite element framework developed in our earlier work to identify the critical parameters governing the predictive accuracy of smart composite laminates (SCLs) in both self-sensing and shape morphing modes. The model incorporates a third-order shear deformation hypothesis, temperature dependent constitutive relations, and von Kármán geometric nonlinearity. Accurate multiphysics modeling of SCLs under coupled thermo-electro-mechanical loading requires careful consideration of temperature dependent material properties, piezoelectric laminate arrangement, and fixation type. A systematic sensitivity analysis of key material parameters is conducted. Our results reveal that the elastic modulus and thermal expansion coefficient dominate the mechanical response, whereas the dielectric permittivity and pyroelectric coefficient primarily govern the electrical output. In the shape morphing mode, the piezoelectric strain constant and the elastic modulus of piezoelectric actuators significantly influence controllability. Fixation type also strongly influences the deformation profiles and sensor voltage distributions, highlighting its importance in assessing controllability and sensing performance. These findings provide quantitative guidelines for parameter selection in the design and application of SCLs.</p>

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Parametric sensitivity analysis of smart piezoelectric laminates for enhanced modeling accuracy

  • 期刊论文

  • 发表日期：

    2026年4月6日

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  • Tongyu Wu,
  • S. A. Meguid

摘要

In this study, we extend the fully coupled finite element framework developed in our earlier work to identify the critical parameters governing the predictive accuracy of smart composite laminates (SCLs) in both self-sensing and shape morphing modes. The model incorporates a third-order shear deformation hypothesis, temperature dependent constitutive relations, and von Kármán geometric nonlinearity. Accurate multiphysics modeling of SCLs under coupled thermo-electro-mechanical loading requires careful consideration of temperature dependent material properties, piezoelectric laminate arrangement, and fixation type. A systematic sensitivity analysis of key material parameters is conducted. Our results reveal that the elastic modulus and thermal expansion coefficient dominate the mechanical response, whereas the dielectric permittivity and pyroelectric coefficient primarily govern the electrical output. In the shape morphing mode, the piezoelectric strain constant and the elastic modulus of piezoelectric actuators significantly influence controllability. Fixation type also strongly influences the deformation profiles and sensor voltage distributions, highlighting its importance in assessing controllability and sensing performance. These findings provide quantitative guidelines for parameter selection in the design and application of SCLs.