이차원 하이브리드 특별 요소를 이용한 균열을 내포하는 용접점의 파단 해석Fracture analysis of spot-welds with an edge crack using 2-D hybrid special finite element

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In the present paper, a novel systematic method using the 2-D hybrid special finite elements containing an edge crack is employed to study the fracture behaviors of laser beam spot-welds in automotive structures. 2-D hybrid special finite elements each containing an edge crack can assure the high precision especially in the vicinity of crack tips and give a better description of its singularity with only one hybrid element surrounding one crack. Therefore, the numerical modeling of the laser beam spot-welds can be greatly simplified. Some numerical examples are provided to demonstrate the validity and versatility of the proposed method. All the lap-shear, lap-tension and angle clip specimens are analyzed and some useful fracture parameters (such as stress intensity factors, the initial direction of crack growth) are obtained simultaneously.
Publisher
한국소성가공학회
Issue Date
2004
Keywords

spot-welds; hybrid special element; stress intensity factors

Citation

한국소성가공학회 2004년도 춘계학술대회 논문집

URI
http://hdl.handle.net/10203/15446
Link
http://www.kstp.or.kr/
Appears in Collection
ME-Conference Papers(학술회의논문)

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