Structural Design Modification of a CubeSat Regarding Modal Compatibility for Launching by Vega C Launcher [PDF]
فصلنامه علوم و فناوری فضایی, 2023 In this research, the dynamic response of a U-12 CubeSat (20x20x30 cm) is investigated for three configurations during the launch conditions. Despite the existence of a successful design for this satellite, adding a mount to install on a standard adapter,
Mohammad Haji Jafari +2 more
doaj +1 more source
Graphical dynamic trends for earthquake incidence response of plan-asymmetric systems [PDF]
, 2015 A Graphical Dynamic model is derived to describe the directional earthquake response of two-ways plan-asymmetric systems, which retains the insightful educational evidence of traditional graphical static methods and the accuracy of computational methods ...
Faggella, Marco +3 more
core +2 more sources
High-speed modal analysis of dynamic modal coupling in fiber laser oscillator
Frontiers in Physics, 2023 Up till now, the spatial and temporal dynamics of transverse mode instability (TMI) in fiber laser oscillator have increasingly attracted a worldwide attention.
Junyu Chai +33 more
doaj +1 more source
Capillary-Inserted Rotor Design for HRµMAS NMR-Based Metabolomics on Mass-Limited Neurospheres
Molecules, 2017 Nuclear magnetic resonance (NMR) spectroscopy is a powerful analytical technique and has been widely used in metabolomics. However, the intrinsic low sensitivity of NMR prevents its applications to systems with limited sample availabilities.
Nghia Tuan Duong +7 more
doaj +1 more source
Some issues when using Fourier analysis for the extraction of modal parameters [PDF]
, 2009 It is sometimes necessary to determine the manner in which structures deteriorate with respect to time; for instance when quantifying a material's ability to withstand sustained dynamic loads. In such cases, it is well established that loss of structural
Andreas +14 more
core +1 more source
Numerical Assessment of Building Vibration Techniques Using Laboratory Models [PDF]
Port Said Engineering Research Journal, 2022 Experimental Modal Analysis (EMA) is one of the most attractive engineering fields nowadays, which specifies in the studies of modal parameters of existing small buildings under forced vibrations.
moataz Elrayes +2 more
doaj +1 more source
Modal identification of cylindrical shell using circumference reduction method
Nihon Kikai Gakkai ronbunshu, 2015 For precision improvement of the noise prediction, the dynamic characteristics of structures need to be verified. This paper focuses on modal identification of the cylindrical shell structures.
Atsushi KITAHARA, Takuya YOSHIMURA
doaj +1 more source
Modal P-delta – simplified geometric nonlinear method by using modal and buckling analysis
Revista IBRACON de Estruturas e Materiais, 2022 Recent works show that in structures, there is a relationship between the natural period of vibration and global second-order effects. This relationship occurs because both depend on the stiffness matrix and the mass matrix of the structure. In this work,
Wagner Almeida Ferreira +3 more
doaj +1 more source
Modal Appropriation for Use with In-Operation Modal Analysis
Shock and Vibration, 2015 We propose in this paper a numerical modal appropriation method for use with in-operation modal analysis (INOPMA). The key idea is to realize that the correlation sequence of the system output is the sum of decaying sinusoids with a certain phase shift ...
M. Abdelghani, D. J. Inman
doaj +1 more source
Non-modal analysis of spectral element methods: Towards accurate and robust large-eddy simulations [PDF]
, 2018 We introduce a \textit{non-modal} analysis technique that characterizes the diffusion properties of spectral element methods for linear convection-diffusion systems.
Fernandez, Pablo +3 more
core +2 more sources