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Relevant bibliographies by topics / Curvature mode shape

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Journal articles

Academic literature on the topic 'Curvature mode shape'

Author: Grafiati

Published: 30 June 2021

Last updated: 3 February 2022

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Journal articles on the topic "Curvature mode shape"

1

Gorgin, Rahim, and Ziping Wang. "Structural Damage Identification Based on Principal Curvatures of Mode Shape." International Journal of Acoustics and Vibration 25, no. 4 (2020): 566–76. http://dx.doi.org/10.20855/ijav.2020.25.41714.

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This paper presents a procedure for damage identification and characterization on plates, based on the principal curvatures of their first mode shape. Each mode shape represents the displacement of the structure at its corresponding natural frequency. Since, variations in the geometry due to cracks or material property degradation, make changes in the mode shapes of the structure, such changes can be used for damage identification methods. The presented procedure only requires the first mode shape of the intact and damaged structure. It is shown that the principal curvatures of the surface def

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2

Guo, Jin Quan, Fen Lan Ou, Jian Feng Zhong, Shun Cong Zhong, Xiao Xiang Yang, and Li Gang Yao. "Damage Detection of Cantilever Beams Based on Derivatives of Mode Shapes." Applied Mechanics and Materials 488-489 (January 2014): 817–20. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.817.

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For the small crack detection (crack ration less than 5%), the derivatives of mode shapes of cantilever beams were used for crack detection in the beams. These derivatives consist of the slope, curvature and rate of curvature, which are the first, second and third derivatives of the displacement mode shape respectively. The presence of a crack results in a slight change in the mode shape of a structure which is manifested as a small discontinuity in the response at the crack location. It is hard to detect small cracks in beams using the direct data of mode shape change. But when the first, sec

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3

Rucevskis, S., and M. Wesolowski. "Identification of Damage in a Beam Structure by Using Mode Shape Curvature Squares." Shock and Vibration 17, no. 4-5 (2010): 601–10. http://dx.doi.org/10.1155/2010/729627.

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During the last decades a great variety of methods have been proposed for damage detection by using the dynamic structure characteristics, however, most of them require modal data of the structure for the healthy state as a reference. In this paper the applicability of the mode shape curvature squares determined from only the damaged state of the structure for damage detection in a beam structure is studied. To establish the method, two aluminium beams containing different-size mill-cut damage at different locations are tested by using the experimentally measured modal data. The experimental m

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4

Ručevskis, Sandris, and Andris Chate. "DAMAGE IDENTIFICATION IN A PLATE-LIKE STRUCTURE USING MODAL DATA." Aviation 17, no. 2 (2013): 45–51. http://dx.doi.org/10.3846/16487788.2013.805863.

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In this paper, an on-going research effort aimed at detecting and localising damage in plate-like structures by using mode shape curvature–based damage detection algorithms is described. Two alternative damage indexes are examined. The first one uses exclusively mode shape curvature data from the damaged structure. This method was originally developed for beam-like structures. In this paper, the method is generalised to plate-like structures that are characterised by two-dimensional mode shape curvature. To examine limitations of the method, several sets of simulated data are applied and damag

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5

Rucevskis, Sandris, Pavel Akishin, and Andris Chate. "Numerical and Experimental Study on the Application of Mode Shape Curvature for Damage Detection in Plate-Like Structures." Solid State Phenomena 220-221 (January 2015): 264–70. http://dx.doi.org/10.4028/www.scientific.net/ssp.220-221.264.

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The paper describes on-going research effort at detecting and localizing damage in plate-like structures using mode shape curvature based damage detection algorithm. The proposed damage index uses data on exclusively mode shape curvature from the damaged structure. This method was originally developed for beam-like structures. The article generalizes the method of plate-like structures characterized by two-dimensional mode shape curvature. To examine limitations of the method, several sets of simulated data are applied and the obtained results of the numerical detection of damage are validated

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6

Yan, Guirong, Xuelin Peng, and Hong Hao. "Localization of free-spanning damage using mode shape curvature." Journal of Physics: Conference Series 305 (July 19, 2011): 012017. http://dx.doi.org/10.1088/1742-6596/305/1/012017.

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7

Roy, Koushik. "Structural Damage Identification Using Mode Shape Slope and Curvature." Journal of Engineering Mechanics 143, no. 9 (2017): 04017110. http://dx.doi.org/10.1061/(asce)em.1943-7889.0001305.

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8

Pavlova, Anastasia V., Judith R. Meakin, Kay Cooper, Rebecca J. Barr, and Richard M. Aspden. "Variation in lifting kinematics related to individual intrinsic lumbar curvature: an investigation in healthy adults." BMJ Open Sport & Exercise Medicine 4, no. 1 (2018): e000374. http://dx.doi.org/10.1136/bmjsem-2018-000374.

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ObjectiveLifting postures are frequently implicated in back pain. We previously related responses to a static load with intrinsic spine shape, and here we investigate the role of lumbar spine shape in lifting kinematics.MethodsThirty healthy adults (18–65 years) performedfreestyle,stoopandsquatlifts with a weighted box (6–15 kg, self-selected) while being recorded by Vicon motion capture. Internal spine shape was characterised using statistical shape modelling (SSM) from standing mid-sagittal MRIs. Associations were investigated between spine shapes quantified by SSM and peak flexion angles.Re

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9

Qiao, Pizhong, Kan Lu, Wahyu Lestari, and Jialai Wang. "Curvature mode shape-based damage detection in composite laminated plates." Composite Structures 80, no. 3 (2007): 409–28. http://dx.doi.org/10.1016/j.compstruct.2006.05.026.

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10

Fan, R., S. K. Singh, and C. D. Rahn. "Modal Analysis of Ballooning Strings With Small Curvature." Journal of Applied Mechanics 68, no. 2 (2000): 332–38. http://dx.doi.org/10.1115/1.1355776.

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During the manufacture and transport of textile products, yarns are rotated at high speed. The surface of revolution generated by the rotating yarn is called a balloon. The dynamic response of the balloon to varying rotation speed, boundary excitation, and aerodynamic disturbances affects the quality of the associated textile product. Resonance, in particular, can cause large tension variations that reduce product quality and may cause yarn breakage. In this paper, the natural frequencies and mode shapes of a single loop balloon are calculated to predict resonance. The three-dimensional nonlin

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