Results 21 to 30 of about 573 (229)

Vibration characteristics analysis of ring-stiffened conical shells based on power series method

open access: yesZhongguo Jianchuan Yanjiu, 2023
ObjectivesThe purpose of this paper is to solve the vibration equations of a ring-stiffened conical shell using the analytical method, and to investigate the vibration characteristics of a ring-stiffened conical shell theoretically.MethodsFirst, the ring-
Haiming YI, Chunxu WANG
doaj   +1 more source

Refined optimal design of ring-stiffened cylindrical shells based on ResNet buckling mode image recognition and domain knowledge

open access: yesZhongguo Jianchuan Yanjiu
ObjectiveIn the fields of underwater vehicles and aerospace, ring-stiffened cylindrical shells are widely used. Achieving a refined design for such structures is crucial to reducing structural weight while meeting strength and stability requirements ...
Junyi WANG, Yuansheng CHENG
doaj   +1 more source

From Geometry to Function: Programmable Mechanical Response in 3D‐Printed Adipose‐Inspired Soft Metamaterials

open access: yesAdvanced Functional Materials, EarlyView.
Geometry‐driven design of soft cellular metamaterials is systematically investigated by combining experiments, finite element modeling, and statistical prediction. The study quantifies how unit cell geometry and material properties govern stiffness, instability, densification, and energy absorption.
Alice Berardo   +4 more
wiley   +1 more source

Dynamic Analysis and critical speed of rotating laminated conical shells with orthogonal stiffeners using generalized differential quadrature method

open access: yesLatin American Journal of Solids and Structures
This paper presents effects of boundary conditions and axial loading on frequency characteristics of rotating laminated conical shells with meridional and circumferential stiffeners, i.e., stringers and rings, using Generalized Differential Quadrature ...
Kamran Daneshjou   +3 more
doaj   +1 more source

Nonlinear static and dynamic buckling of eccentrically stiffened functionally graded cylindrical shells under axial compression surrounded by an elastic foundation

open access: yesVietnam Journal of Mechanics, 2014
This paper presents an analytical approach to investigate the nonlinear buckling of imperfect eccentrically stiffened functionally graded thin circular cylindrical shells subjected to axial compression and surrounded by an elastic foundation.
Vu Hoai Nam   +3 more
doaj   +1 more source

Molecular Rotors: From Newtonian Fluids to Functional Materials as Viscosity and Temperature Sensing Tools

open access: yesAdvanced Functional Materials, EarlyView.
Molecular rotors are fluorescent molecules that are sensitive to viscosity and temperature variations in the environment. They exhibit a direct correlation between fluorescence and viscosity within Newtonian fluids. However, this correlation becomes less straightforward in complex systems.
Flavia Di Scala   +6 more
wiley   +1 more source

Probabilistic ultimate strength analysis of submarine pressure hulls

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2013
This paper examines the application of structural reliability analysis to submarine pressure hulls to clarify the merits of probabilistic approach in respect thereof.
Burak Can Cerik   +2 more
doaj   +1 more source

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

open access: yesAdvanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen   +16 more
wiley   +1 more source

The stress-strain state of ribbed shell structures

open access: yesИнженерно-строительный журнал, 2017
The paper presents an analysis of the stress-strain state of shallow shell structures of double curvature, reinforced from the concave side by a various number of stiffeners.
Vladimir Karpov   +2 more
doaj   +1 more source

Multidisciplinary design optimization of non-uniform stiffened cylindrical shells

open access: yesZhongguo Jianchuan Yanjiu, 2021
ObjectivesUnderwater structures have strict requirements for intensity, mass, vibration, noise and so on. From a multidisciplinary perspective, realizing the design optimization of such structures to improve their overall performance is of great ...
Jingru LI, Jiang LIU, Sheng LI
doaj   +1 more source

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