Results 1 to 10 of about 47,269 (302)
Numerical analysis of aerodynamic damping for a centrifugal impeller
Engineering Applications of Computational Fluid Mechanics, 2018 In order to realize the numerical analysis of aerodynamic damping for the centrifugal impellers, a numerical code integrating the flow-structure data transfer, grid deformation and flow simulation under the moving grid system is first developed.
Jun Xiao, Yuanyang Zhao, Qichao Yang
doaj +1 more source
How to retrieve the normal modes using the POD [PDF]
, 2012 International audienceProper orthogonal decomposition (POD) is an increasingly popular way to analyze data, and to obtain either a low- dimensional approximated description of a high-dimensional process, or useful information for damage assessment.
Argoul, Pierre +3 more
core +2 more sources
Dynamic characteristics of offshore wind power with bucket foundation based on field tests
Yantu gongcheng xuebaoThe offshore wind power structures bear complex environmental loads induced by winds and waves over the life time. Dynamic characteristic is an important basis for the safety assessment of the offshore wind power structures.
CAI Zhengyin, FAN Kaifang, ZHU Xun
doaj +1 more source
Damping identification in multi-degree-of-freedom systems using the continuous wavelet transform
Vietnam Journal of Mechanics, 2005 The identification of damping in multi-degree-of-freedom vibration systems is a well-known problem and appears to be of crucial interest. Compared to an estimation of the stiffness and mass, the damping coefficient or, alternatively, damping ratio is ...
Nguyen Phong Dien
doaj +1 more source
Shock and Vibration, 2015 A topology optimization method is proposed to minimize the resonant response of plates with constrained layer damping (CLD) treatment under specified broadband harmonic excitations.
Zhanpeng Fang, Ling Zheng
doaj +1 more source
Operational modal analysis with non stationnary inputs [PDF]
, 2013 Operational modal analysis (OMA) techniques enable the use of in-situ and uncontrolled vibrations to be used to lead modal analysis of structures. In reality operational vibrations are a combination of numerous excitations sources that are much more ...
Coulange, Baptiste +3 more
core +1 more source
Jixie qiangduIn order to study the dynamic behavior of stiffened cylindrical shells with composite material sandwiched by co-cured damping films under the clamped boundary condition, the specimens of stiffened cylindrical shell with composite material sandwiched by ...
ZHOU Yuesong +5 more
doaj
A METHOD FOR DETERMINING RAYLEIGH DAMPING PARAMETERS OF COMPLEX FIELD
Civil Engineering Journal, 2019 Rayleigh damping model, which is still adopted by manygeneral finite element programs and widely used in analysis of engineering, leads to the inconformity of the calculating modal damping ratio with the actual modal ...
Huai-feng Wang, Ru-lin Zhang
doaj +1 more source
Identification of Loss Factor of Fiber-Reinforced Composite Based on Complex Modulus Method
Shock and Vibration, 2017 The identification of the loss factor of fiber-reinforced composite based on complex modulus method is presented. Firstly, the damping model of fiber-reinforced composite plate is established, and the relation between each loss factor and modal damping ...
Hui Li, Yi Niu, Chao Mu, Bangchun Wen
doaj +1 more source
The impact of local masses and inertias on the dynamic modelling of flexible manipulators [PDF]
, 1992 After a brief review of the recent literature dealing with flexible multi-body modelling for control design purpose, the paper first describes three different techniques used to build up the dynamic model of SECAFLEX, a 2 d.o.f.
Alazard, Daniel, Chrétien, Jean-Pierre
core