Results 21 to 30 of about 6,820 (293)

The stress-strain state of ribbed shell structures

Инженерно-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, Oleg Ignat'ev, Alexey Semenov   +2 more
doaj   +1 more source

Influence of the boundary conditions on the natural frequencies of a Francis turbine [PDF]

, 2016
Natural frequencies estimation of Francis turbines is of paramount importance in the stage of design in order to avoid vibration and resonance problems especially during transient events.
Bossio, Matias, Egusquiza Estévez, Eduard, Presas Batlló, Alexandre, Ramos Martín, David, Valentín Ruiz, David, Valero Ferrando, Ma. del Carmen   +5 more
core   +1 more source

Mechanical design and analysis for a low beta squeezed half-wave resonator

, 2013
A superconducting half-wave resonator (HWR) of frequency=162.5 MHz and {\beta}=0.09 has been developed at Institute of Modern Physics. Mechanical stability of the low beta HWR cavity is a big challenge in cavity design and optimization.
He, Shoubo, He, Yuan, Huang, Shichun, Huang, Yulu, Jiang, Tiancai, Wang, Fengfeng, Wang, Ruoxu, Wang, Zhijun, Xu, Mengxin, Yue, Weiming, Zhang, Cong, Zhang, Shenghu, Zhang, Shengxue, Zhao, Hongwei   +13 more
core   +1 more source

The low-noise optimisation method for gearbox in consideration of operating conditions [PDF]

, 2014
This paper presents a comprehensive procedure to calculate the steady dynamic response and the noise radiation generated from a stepping-down gearbox.
Kang, J, Sun, W, Tao, Q, Zhou, J
core   +1 more source

Buckling Load Reduction for Stiffened Panels Due to Cutouts in Ribs [PDF]

AIAA Journal, 1998
In aerospace structures it is common to find stiffened panels with transverse supporting structures, e.g. wing ribs or fuselage frames. Incorporating cutouts into these supporting structures to allow the stringers to pass through freely considerably reduces the buckling load of the panels. It is shown that a minor modification in the fabrication of the
Watson, Andrew, Williams, Fred W., Kennedy, David   +2 more
openaire   +1 more source

Buckling Analysis of Sandwich Plate Systems with Stiffening Ribs: Theoretical, Numerical, and Experimental Approaches

Advances in Civil Engineering, 2019
This paper discusses a global buckling analysis approach for sandwich plates with stiffening ribs. The approach is based on theoretical study and is implemented by the finite element method (FEM). The equilibrium equation corresponding to critical global
Guangping Zou, Yuyang Wang, Qichao Xue, Chunwei Zhang   +3 more
doaj   +1 more source

Application of the method of spline-collocations to the solution of dynamic and static problems for structurally inhomogeneous cylindrical shells

Доповiдi Нацiональної академiї наук України, 2019
The method of spline collocation, in contrast to the use of double trigonometric series for the approximation of the displacements of points of the middle surface of a shell, allows us to significantly expand the class of applied problems and, in some ...
P.Z. Lugovyy , Y.V. Skosarenko , S.P. Orlenko   +2 more
doaj   +1 more source

Vibroacoustic Optimization of Stiffening Ribs and Damping Material Distribution on Sheet Metal Parts

Shock and Vibration, 2004
Vehicle noise and vibration levels are basic parameters in passenger comfort. Both static and dynamic stiffness of sheet metal parts is commonly increased by means of stiffening ribs.
M. Carfagni, P. Citti, L. Governi, M. Pierini   +3 more
doaj   +1 more source

Axial Tensile Experiment of the Lap-Type Asymmetric K-Shaped Square Tubular Joints with Built-In Stiffeners

Buildings
To study the mechanical properties of asymmetric K-shaped square tubular joints with built-in stiffening rib lap joints, axial tensile tests were carried out on one K-shaped joint without built-in stiffening ribs and four K-shaped joints with built-in ...
Zhihua Zhong, Peiyu Peng, Zheweng Zhu, Xiang Ao, Shiwei Xiong, Jinkun Huang, Lihong Zhou, Xiaochuan Bai   +7 more
doaj   +1 more source

Design and Optimization of the Bi-Directional U-Ribbed Stiffening Plate–Concrete Composite Bridge Deck Structure

Applied Sciences, 2023
The steel–concrete composite structure is widely used in civil engineering for large-span bridges. Orthotropic steel bridge decks (OSDs) have particularly gained popularity due to their excellent mechanical performance. To address cracking issues in OSDs
Dingchao Wei, Jingwen Liao, Jianjun Liu, Yingjie Gao, Fanglin Huang   +4 more
doaj   +1 more source