Micro-Simulation of Concrete Based on the Zero-Thickness Interface Element


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Intravascular Ultrasound (IVUS) is one of interventional imaging modalities widely used in clinical diagnosis of vascular diseases, especially coronary artery diseases. Segmentation of IVUS images to extract vessel wall boundaries is of importance for quantitative analysis and 3D vessel reconstruction. A 3D parallel method for segmenting IVUS image sequence is proposed in this paper. Firstly, original images are preprocessed to reduce possible noises and eliminate ring-down artifacts. Then, several longitudinal cuts are obtained and intima-lumen and media-adventitia boundaries are detected. Once these boundaries are mapped onto each cross-sectional slice, initial plan of vessel wall boundaries in each frame is obtained. Finally, these initial contours evolve continuously until stop at target contours. Consequently, segmentation of each IVUS tomographic frame isimplemented simultaneously and the efficiency is greatly raised compared with 2D sequential approaches.



Edited by:

Han Zhao




S. X. Wu et al., "Micro-Simulation of Concrete Based on the Zero-Thickness Interface Element", Applied Mechanics and Materials, Vols. 130-134, pp. 3324-3328, 2012

Online since:

October 2011




[1] Z.M. Wang, A.K.H. Kwan, H.C. Chan. Mesoscopic study of concrete I: generation of random aggregate structure and finite element mesh. Computers & Structures, Vol. 70(1990),P. 533-544.

DOI: 10.1016/s0045-7949(98)00177-1

[2] Liu Qiang. Studies on Meso-Level Damage and Macroscopical Strength of Concrete by Random Particle Model. Beijing: Beijing University of Technology. (2005).

[3] A.K.H. Kwan, Z.M. Wang, H.C. Chan, Mesoscopic study of concrete II: nonlinear finite element analysis, Computers & Structures, Vol. 70(1999),P. 545-556.

DOI: 10.1016/s0045-7949(98)00178-3

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