Singular spectrum analysis based structural damage identification in beams with multiple breathing cracks DOI
J. Prawin

Mechanics Based Design of Structures and Machines, Journal Year: 2023, Volume and Issue: 52(6), P. 3011 - 3037

Published: April 11, 2023

This paper presents a generalized vibration-based multiple breathing crack localization technique in beams with an unknown number of cracks based on Singular Spectrum Analysis (SSA). Localization is highly challenging inverse problem, as all these (more than two) might be similar state (either opening or closing state) at any particular time instant contrasting states (while some are opening, others during vibration. The level nonlinearity vibration response strongly dependent not only each size, and location but also the application driving force along cracked beam. concept varied input frequency excitation sources employed present work for identification over tedious traditional approach varying positions. major advantage using singular spectrum analysis that it can reliably isolate extract very low-amplitude nonlinear sensitive components (super harmonics intermodulation) being buried total pairwise eigenvalue property harmonic components. Investigations have been carried out by number, spatial locations, intensities cracks. Sensitivities associated measurement noise limited sensors investigated. results both numerical experimental investigations this concluded proposed SSA effectively localize closely spaced sparsely (i.e.,, spatially far apart) data-driven, works sensors, does need reference healthy measurements.

Language: Английский

Unified two-phase nonlocal formulation for vibration of functionally graded beams resting on nonlocal viscoelastic Winkler-Pasternak foundation DOI
Pei Zhang, Peter Schiavone, Hai Qing

et al.

Applied Mathematics and Mechanics, Journal Year: 2022, Volume and Issue: 44(1), P. 89 - 108

Published: Dec. 29, 2022

Language: Английский

Citations

16

Torsional vibration of a flexoelectric nanotube with micro-inertia effect DOI
Olha Hrytsyna, J. Sládek, V. Sládek

et al.

Mechanics of Advanced Materials and Structures, Journal Year: 2023, Volume and Issue: 31(17), P. 4019 - 4036

Published: March 20, 2023

The modified strain gradient theory (MSGT) with flexoelectric and micro-inertia effects is developed to study the free vibration of tube made elastic centrosymmetric materials. Within this theory, internal energy density function tensor, deviatoric part stretch rotation tensors, dilatation gradient, polarization vector, electric quadrupoles. linear coupled governing equations boundary conditions are derived from Hamilton variation principle. torsional problem analytically solved for non-piezoelectric nanotube fixed edges. effect geometry, coefficient, micro-inertia, micro-stiffness parameters on natural frequency studied.

Language: Английский

Citations

9

On the Advances of Computational Nonclassical Continuum Theories of Elasticity for Bending Analyses of Small-Sized Plate-Based Structures: A Review DOI
Abubakar Abdussalam Nuhu, Babak Safaei

Archives of Computational Methods in Engineering, Journal Year: 2023, Volume and Issue: 30(5), P. 2959 - 3029

Published: Feb. 15, 2023

Language: Английский

Citations

7

Computational Linear and Nonlinear Free Vibration Analyses of Micro/Nanoscale Composite Plate-Type Structures With/Without Considering Size Dependency Effect: A Comprehensive Review DOI Creative Commons

Zummurd Al Mahmoud,

Babak Safaei, Saeid Sahmani

et al.

Archives of Computational Methods in Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

Language: Английский

Citations

2

Nonlinear dynamic stability analysis of axial impact loaded structures via the nonlocal strain gradient theory DOI
Qingya Li, Di Wu, Wei Gao

et al.

Applied Mathematical Modelling, Journal Year: 2022, Volume and Issue: 115, P. 259 - 278

Published: Nov. 12, 2022

Language: Английский

Citations

11

Shape sensing approach for composite and sandwich beam with generic cross-sections: Application to fiber-reinforced polymer composite airfoil DOI
Feifei Zhao, Hong Bao

Aerospace Science and Technology, Journal Year: 2023, Volume and Issue: 138, P. 108314 - 108314

Published: April 6, 2023

Language: Английский

Citations

6

Dynamic analysis of magnetically sensitive embedded graphene nanoplate using nonlocal elasticity and smooth GFEM approximation DOI
Oscar Alfredo Garcia de Suarez, Tiago dos Santos, Rodrigo Rossi

et al.

Applied Mathematical Modelling, Journal Year: 2024, Volume and Issue: 127, P. 823 - 848

Published: Jan. 18, 2024

Language: Английский

Citations

2

Scaling laws of Space Solar Power Satellite concentrator unit distortion model obtained by performance-driven separate similitude analysis method DOI

Yingchun Du,

Guanheng Fan, Guangda Chen

et al.

Aerospace Science and Technology, Journal Year: 2024, Volume and Issue: 148, P. 109081 - 109081

Published: March 19, 2024

Language: Английский

Citations

2

Size-Dependent Rigid–Flexible Coupling Dynamics of Functionally Graded Rotating Moderately Thick Microplates DOI
Wuyuan Zhang, Bo Zhang, Huoming Shen

et al.

International Journal of Structural Stability and Dynamics, Journal Year: 2023, Volume and Issue: 23(15)

Published: Jan. 31, 2023

Micro air vehicles, which are typical small-sized rotating-motion systems, have seen major advancements in recent years. To provide some theoretical basis for developing and producing micro this study establishes a novel rigid–flexible coupling dynamic model functionally graded (FG) moderately thick rectangular microplates attached to central rotating rigid hub based on the modified couple stress theory first-order shear deformation theory. The proposed incorporates nonlinear term of in-plane reflect stiffening effect caused by rotational motion. Material characteristics FG microplate linear power-law distribution along thickness axis. Further, discrete form dimensionless equations their numerical solutions obtained combining Euler–Lagrange equation Chebyshev–Ritz method. Convergence comparative studies carried out demonstrate accuracy validity model. Thereafter, influence material length scale parameter, speed, gradient index, aspect ratio frequency is investigated. Numerical results reveal that effects both enhance rigidity microplates, whereas index decreases rigidity. Nonlinear leads significant differences value trace line can’t be ignored rotative structure. In-plane motion its terms play function or microplates. increase speed will reduce size dependency microplate. Furthermore, trajectory steering corresponding mode transition phenomenon graphically represented.

Language: Английский

Citations

5

Nonlinear forced vibration of thermo-electro-elastic piezoelectric-graphene composite nanoplate based on viscoelastic foundation DOI

Yunping Zhao,

Xiuhui Hou, Shuo Zhang

et al.

Acta Mechanica Sinica, Journal Year: 2022, Volume and Issue: 39(3)

Published: Oct. 27, 2022

Language: Английский

Citations

8