Nonlinear poro-thermo-forced vibration in curved sandwich magneto-electro-elastic shells under hygrothermal environment

• Published in: Acta mechanica Vol. 235; no. 9; pp. 5489 - 5528
• Main Authors: Selvamani, Rajendran, Ebrahimi, Farzad, Yaylacı, Murat, Öztürk, Şevval, Yaylacı, Ecren Uzun
• Format: Journal Article
• Language: English
• Published: Vienna Springer Vienna 01.09.2024; Springer Nature B.V
• Subjects: Carbon nanotubes; Civil engineering; Classical and Continuum Physics; Composite materials; Composite structures; Control; Deformation; Deformation effects; Dynamical Systems; Elastic deformation; Elastic shells; Engineering; Engineering Fluid Dynamics; Engineering Thermodynamics; Forced vibration; Graphene; Heat and Mass Transfer; Influence; Investigations; Magnetic fields; Magnetic properties; Nonlinearity; Numerical analysis; Original Paper; Piezoelectricity; Polymers; Polynomials; Rheological properties; Rheology; Shear deformation; Smart structures; Solid Mechanics; Strain; Stress propagation; Synergistic effect; Theoretical and Applied Mechanics; Vibration; Viscosity; Wave propagation
• ISSN: 0001-5970; 1619-6937
• DOI: 10.1007/s00707-024-03994-z

This research employs a multiple scales perturbation approach to evaluate the nonlinear wave propagation behaviors of a doubly curved sandwich composite piezoelectric shell with a flexible core in a hygrothermal environment. Stress and strain calculations for the flexible core and face sheets are carried out using Reddy's third-order shear deformation theory (TSDT) and third-order polynomial theory, respectively. The study explores the synergistic effects of a multilayered shell, flexible core, and magneto-rheological layer (MR) in revealing the nonlinearity of both in-plane and vertical moment within the core. The Halpin–Tsai model is employed to derive the properties of polymer/carbon nanotube/fiber (PCF) and polymer/graphene platelet/fiber (PGF) three-phase composite shells. The governing equations for the multiscale shell are derived using Hamilton's formulation. The research investigates temperature variations, diverse distribution patterns, curvature ratios, and magnetic fields through numerical analysis, presenting the results graphically and prior research has demonstrated the accuracy of these methods. Notably, these factors exert significant influence on the frequency-amplitude curves of the smart structure.