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RFOR-DQHFEM: Hybrid relaxed first-Order reliability and differential quadrature hierarchical finite element method for multi-physics reliability analysis of conical shells

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Erişim

info:eu-repo/semantics/closedAccess

Tarih

2024

Yazar

Furjan, M.
Kolahchi, R.
Yaylacı, Murat

Üst veri

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Künye

Furjan, M., Kolahchi, R., & Yaylacı, M. (2024). RFOR-DQHFEM: Hybrid Relaxed First-Order Reliability and Differential Quadrature Hierarchical Finite Element Method for multi-physics reliability analysis of conical shells. Thin-Walled Structures, 205(C), 112583. https://doi.org/10.1016/j.tws.2024.112583

Özet

In this current work, a hybrid reliability analysis and theoretical frequency technique are suggested for the reliability response of conical shells. Two levels of analyses are proposed as the main loop of the reliability method for finding the failure probability and the second level applied in the main loop for giving the performance function of frequency applied in conical shell structures with multi-physics vibration analysis. A dynamical adjusting procedure is proposed for computing the relaxed factor using the enough descent condition inside the reliability method. The superior convergence rate is considered for selecting the relaxed factor of the proposed first-order reliability method named RFORM. An elastic-electro-mechanical model based on the Higher- Order Shear Deformation Theory (HSDT) is extended for frequency analysis of conical shells. The innovative numerical procedure named Differential Quadrature Hierarchical Finite Element Method (DQHFEM) as a robust framework for giving the vibration behavior of studied mechanical structures is applied for solving motion equations. The developing DQHFEM and RFORM are applied for the laminated, nanocomposite, and piezoelectric conical shell structures with multi-source uncertainties. Increasing the volume percentage of nano- particles from 0% to 10% significantly enhances the reliability index, with carbon nanoparticles showing a 132% increase, silica nanoparticles showing a 97% increase, and other nanoparticles showing an approximate 40% increase. Also, as moisture content increases from 0% to 30%, the reliability index for a thickness-to-large-radius ratio of 0.2 drops by about five times. Excessive moisture levels (above 20%) result in a negative reliability index, indicating a hazardous condition.

Kaynak

Thin-Walled Structures

Cilt

205

Sayı

C

Bağlantı

https://doi.org/10.1016/j.tws.2024.112583
https://hdl.handle.net/11436/9774

Koleksiyonlar

  • İnşaat Mühendisliği Bölümü Koleksiyonu [260]
  • WoS İndeksli Yayınlar Koleksiyonu [5260]



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