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Geometric Imperfection Simulations in Cee-Shape Cold-Formed Steel Members Based on Newly Developed Machine-Vision Inspection Techniques

open access: yesBuildings, 2023
This paper insightfully studies geometric imperfection simulations of cee-section CFS members from laser-based measurements. A machine-vision imperfection inspection technique is first developed where an algorithm is implemented to automate imperfection ...
Hanbo Guan   +3 more
doaj   +3 more sources

Dynamic behaviors of cylindrical shells with geometric imperfection [PDF]

open access: yesMATEC Web of Conferences, 2019
For finding out the relationship between vibrational modes and geometric imperfections, the dynamic behavior of cylindrical shells with a local imperfection is analyzed by using numerical simulation of finite element method in this paper.
Jia J F   +4 more
doaj   +2 more sources

Most adverse geometrical imperfections of steel spherical shells

open access: yesBudownictwo i Architektura, 2014
Steel, spherical shells subjected to an external pressure are exposed to the loss of stability and such a phenomenon determines the global resistance of such shells.
Paweł Błażejewski   +1 more
doaj   +3 more sources

Geometrically nonlinear buckling analysis of truss with length imperfection subjected to mechanical and thermal load using hybrid FEM [PDF]

open access: yesE3S Web of Conferences, 2023
This paper presents a novel hybrid FEM-based approach to establish the mathematical model for solving the nonlinear buckling problem of truss systems with length imperfection under mechanical and thermal load.
Bich Quyen Vu Thi   +2 more
doaj   +1 more source

Vibration Analysis of an Imperfect Single-Layer Graphene Sheet using Quasi-3d Theory and Isogeometric Approach [PDF]

open access: yesInternational Journal of Advanced Design and Manufacturing Technology, 2023
In this study, the size-dependent free vibration analysis of a geometrically imperfect single-layer graphene sheet (SLGS) is studied by an isogeometric approach along with the quasi-3D shear and normal deformation theory.
Heidar Fazeli   +2 more
doaj   +1 more source

Static Strength and Buckling Analysis of an Aircraft Support

open access: yesApplied Sciences, 2023
At the initial stage of design, the structural strength and stability of the load-bearing structural members of the aircraft are mainly considered. In this paper, the structural strength and stability of a support of aircraft assembly are analyzed. First,
Daqian Zhang   +2 more
doaj   +1 more source

Post-buckling Partial Similitude Scaled Model for Stiffened Cylinders under Axial Compression by Energy Method

open access: yesBuildings, 2022
Considering the geometric nonlinearity and geometric imperfection of stiffened cylinders, the generalized similitude conditions and scaling laws for axial compression post-buckling are established by applying the similitude transformation to the total ...
Wei Yu   +3 more
doaj   +1 more source

Clarifying the theoretical basis of the global geometric imperfection analysis (out-of-plumb columns)

open access: yesREM: International Engineering Journal, 2021
The concrete structures present several geometric deviations, some of them considered indirectly in the safety factors of the design. However, the imperfections of the element axes, especially columns, should be explicitly considered in the structural ...
Petrus Gorgônio Bulhões da Nóbrega   +2 more
doaj   +1 more source

Nonlinear Dynamic Behavior of Porous and Imperfect Bernoulli-Euler Functionally Graded Nanobeams Resting on Winkler Elastic Foundation

open access: yesTechnologies, 2020
Nonlinear free vibrations of functionally graded porous Bernoulli–Euler nano-beams resting on an elastic foundation through a stress-driven nonlocal elasticity model are studied taking into account von Kármán type nonlinearity and initial geometric ...
Rosa Penna, Luciano Feo
doaj   +1 more source

Probabilistic Buckling Analysis on Light Steel Compression Members [PDF]

open access: yesE3S Web of Conferences
Cold-formed steel sections are thin-walled structural members with high width-to-thickness ratios, making them highly susceptible to initial geometric imperfections that may reduce their buckling capacity.
Oktavia Tuti   +5 more
doaj   +1 more source

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