Results 91 to 100 of about 37,827 (316)

Analysis of Wing Structures via Machine Learning-Based Surrogate Models

open access: yesAerospace
Accurate structural analysis is essential for the design and optimization of aircraft wings; however, repeated high-fidelity finite element analysis (FEA) becomes computationally expensive when embedded in iterative design loops.
Hasan Kiyik   +2 more
doaj   +1 more source

Influence of Imperfections on Axial Buckling Load of Composite Cylindrical Shells

open access: yes, 2013
There is a strong requirement for more robust, lighter and cheaper launch vehicle structures. Unstiffened composite cylindrical shells, which are essential to the fabrication of launch vehicle airframes, are prone to buckling and are highly sensitive to ...
Prusty, G.   +5 more
core  

Cutout reinforcements for shear loaded laminate and sandwich composite panels [PDF]

open access: yes, 2008
This paper presents the numerical and experimental studies of shear loaded laminated and sandwich carbon/epoxy composite panels with cutouts and reinforcements aiming at reducing the cutout stress concentration and increasing the buckling stability of
Guo, Shijun J., Zhou, L., Cheung, C. W.
core   +1 more source

Tunable Extraordinary Optical Transmission in the Long‐Wavelength Infrared Range Using Electrostatic MEMS Actuation

open access: yesAdvanced Materials Technologies, EarlyView.
A MEMS‐integrated metamaterial filter enables continuous, low‐voltage spectral tuning in the long‐wavelength infrared (LWIR). The device employs extraordinary optical transmission in a dual suspended metasurface stack, where electrostatic actuation precisely controls the intermembrane air gap.
Oleg Bannik   +6 more
wiley   +1 more source

Evaluation of Isogrid Rib-Stiffened and Conventional Helicopter Fuselage Panels Under Discrete Damage and Complex Loading Scenarios

open access: yesEngineering Proceedings
This study examines how circular and star-shaped damage affects Aluminum-2024-T3 helicopter fuselage panels, focusing on damage shape, size, and location.
Odeh Dababneh, Alex John Pullan
doaj   +1 more source

A refined higher-order shear deformation theory for bending, vibration and buckling analysis of functionally graded sandwich plates

open access: yes, 2015
A refined higher-order shear deformation theory for bending, vibration and buckling analysis of functionally graded sandwich plates is presented in this paper.
Thai, Huu-Tai, Vo, Thuc, Nguyen, Kien
core   +1 more source

Finite element model for vibration and buckling of functionally graded sandwich beams based on a refined shear deformation theory [PDF]

open access: yes, 2014
Finite element model for vibration and buckling of functionally graded sandwich beams based on a refined shear deformation theory is presented. The core of sandwich beam is fully metal or ceramic and skins are composed of a functionally graded material ...
Thai, Huu-Tai   +4 more
core   +1 more source

Buckling‐Driven Linearity in Flexible Capacitive Pressure Sensors Based on a Three‐Dimensional Dual‐Pore Polyurethane Structure

open access: yesAdvanced Materials Technologies, EarlyView.
A flexible pressure sensor utilizing a 3D dual‐pore polyurethane structure is developed to overcome the intrinsic trade‐off between sensitivity and linearity. By inducing sequential buckling through distinct pore sizes and shapes, the device achieves highly linear and sensitive responses across a wide pressure range.
Jae Yeong Jang, Jaemin Choi, Young Jung
wiley   +1 more source

Comparison of new Design Guidelines for Composite Cylindrical Shells prone to Buckling

open access: yes, 2013
Currently, imperfection sensitive shell structures prone to buckling are designed according to the NASA SP-8007 guideline, from 1968, using its conservative lower-bound curve.
Zimmermann, R.   +3 more
core  

Overall buckling of lightweight stiffened panels using an adapted orthotropic plate method

open access: yes, 2015
The ultimate longitudinal bending strength of thin plated steel structures such as box girder bridges and ship hulls can be determined using an incremental–iterative procedure known as the Smith progressive collapse method.
Downes, J., Dow, R.S., Benson, S.
core   +1 more source

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