Finite element mesh generation based on digital image for concrete crack
Received:October 05, 2011  Revised:March 08, 2012
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KeyWord:concrete cracks  edge detection  multi-resolution sequential edge linking  boundary vectorization  automatic generation of finite element mesh
杨松 大连理工大学 工业装备结构分析国家重点实验室, 大连 ;大连海洋大学 教育技术与计算中心, 大连
邵龙潭 大连理工大学 工业装备结构分析国家重点实验室, 大连
郭晓霞 大连理工大学 工业装备结构分析国家重点实验室, 大连
赵博雅 大连理工大学 工业装备结构分析国家重点实验室, 大连
林刚 大连理工大学 工业装备结构分析国家重点实验室, 大连 ;92538部队, 大连
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      By integrating digital image processing,boundary vectorization and automatic generation of finite element mesh,a finite element analysis method based on digital image for concrete crack is proposed.Aiming at concrete crack,firstly,the paper adopts Canny operator to extract the crack edges,and uses MSEL algorithm to achieve the connection of interruptive edges and the removal of pseudo-boundary.Secondly,by using boundary vectorization technique,the edges of crack are fitted to little line blocks.Finally,on the basis of boundary vectorization,the paper employs automatic generation technique to generate finite element mesh for cracks structure,and achieves the analysis of loading for crack regions.The experimental results show that this proposed method can achieve the integration of monitoring of concrete structures and mechanical analysis for the cracks,and can significantly improve the speed and efficiency of evaluation for the concrete structures.