The remarkable structure of the mode shapes and eigenforces of a special multibody oscillator
Sign Up to like & getrecommendations! Published in 2018 at "Archive of Applied Mechanics"
DOI: 10.1007/s00419-017-1327-9
Abstract: This contribution deals with Mikota’s oscillator, a linear vibration chain with arbitrary n degrees of freedom. Of special interest are both the left- and right-eigenvectors of the undamped system. Investigating the first two right-eigenvectors leads to a… read more here.
Keywords: right eigenvectors; structure; oscillator; mode shapes ... See more keywords
Buckling Analysis of Tapered Continuous Columns by Using Modified Buckling Mode Shapes
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Marine Science and Application"
DOI: 10.1007/s11804-019-00085-7
Abstract: Elastic critical buckling load of a column depends on various parameters, such as boundary conditions, material, and cross-section geometry. The main purpose of this work is to present a new method for investigating the buckling… read more here.
Keywords: method; modified buckling; buckling mode; mode shapes ... See more keywords
Quantitative validation of the analytical mode shapes of a beam-like structure with a Z-shaped configuration
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Mechanical Science and Technology"
DOI: 10.1007/s12206-019-0409-8
Abstract: Beam-like structures are widely used in engineering. The accuracy of the analytical mode shapes of these structures is important for studying their dynamic characteristics. A method is presented in this study to theoretically obtain and… read more here.
Keywords: beam like; analytical mode; shapes beam; structure ... See more keywords
Precise integration method for natural frequencies and mode shapes of ocean risers with elastic boundary conditions
Sign Up to like & getrecommendations! Published in 2018 at "Applied Mathematical Modelling"
DOI: 10.1016/j.apm.2018.05.017
Abstract: Abstract The effects of the elastic constraints simulating damaged and undamaged boundaries on the natural frequencies and mode shapes of ocean risers with a variable axial tension are investigated using the precise integration method (PIM).… read more here.
Keywords: ocean risers; frequencies mode; boundary conditions; mode shapes ... See more keywords
Stiffness modelling of 2D welded joints using metamodels based on mode shapes
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Constructional Steel Research"
DOI: 10.1016/j.jcsr.2019.02.017
Abstract: Abstract Connections are a key component of steel structures. Current methods of analysis of steel frames mostly rely on approximate joint models based on zero-length rotational springs or mechanical models of rigid bars and springs.… read more here.
Keywords: steel; modelling welded; welded joints; joints using ... See more keywords
Non-model-based damage identification of plates using principal, mean and Gaussian curvature mode shapes
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2017.03.030
Abstract: Abstract Mode shapes have been extensively used to identify structural damage. This paper presents a new non-model-based method that uses principal, mean and Gaussian curvature mode shapes (CMSs) to identify damage in plates; the method… read more here.
Keywords: principal mean; mode; mode shape; damage ... See more keywords
A symmetry measure for damage detection with mode shapes
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2017.07.022
Abstract: Abstract This paper introduces a feature for detecting damage or changes in structures, the continuous symmetry measure, which can quantify the amount of a particular rotational, mirror, or translational symmetry in a mode shape of… read more here.
Keywords: symmetry measure; mode shapes; damage;
Identification of structural damage using S-transform from 1D and 2D mode shapes
Sign Up to like & getrecommendations! Published in 2020 at "Measurement"
DOI: 10.1016/j.measurement.2020.108656
Abstract: Abstract An improvement of vibration-based damage identification in structures attracted much attention over the last decades. Many of the developed algorithms to-date, like those based on wavelet transforms (WTs), reveal high sensitivity to damage, however… read more here.
Keywords: structural damage; damage using; identification structural; damage ... See more keywords
Extraction of the structural mode shapes utilizing image processing method and data fusion
Sign Up to like & getrecommendations! Published in 2021 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2020.107380
Abstract: Abstract Dynamic properties of structures, such as natural frequency, mode shapes, and damping ratios, play a decisive role in the structural behavior against dynamic loads such as earthquakes. One of the utilizations of these properties… read more here.
Keywords: processing method; mode shapes; method; image processing ... See more keywords
The effect of crack geometry on mode shapes of a cracked cantilever beam
Sign Up to like & getrecommendations! Published in 2020 at "Australian journal of mechanical engineering"
DOI: 10.1080/14484846.2020.1766349
Abstract: Due to the limitations of the manufacturing processes, defect like crack is produced in the structures. Crack gives the catastrophic failure of the structures or beams; hence, the detection and cla... read more here.
Keywords: geometry mode; crack geometry; geometry; effect crack ... See more keywords
Natural Frequencies and Mode Shapes of Drill Pipe in Subsea Xmas Tree Installation
Sign Up to like & getrecommendations! Published in 2020 at "Mathematical Problems in Engineering"
DOI: 10.1155/2020/5634194
Abstract: In this study, experimental and numerical investigations on the vibration characteristics of a drill pipe during the lowering of a subsea Xmas tree were presented. A fourth-order partial differential equation with variable coefficients was established… read more here.
Keywords: frequencies mode; drill pipe; xmas tree; mode shapes ... See more keywords