變厚板材에서 S.I.F.의 數値解析에 關한 硏究 = A Study on the Numerical Analysis of S.I.F. in the Varying Thickness Plate

다국어 초록 (Multilingual Abstract)

This study is to analyze the S.I.F. K value upon Mode I cracks in a finite-width plate of varying thickness, which is expressed in terms of width ratio(ω), thickness ratio(β) and non-dimensional crack length(λ) by using the 2-dimensional and 3-dimensional finite element method.
Comparing the effectiveness of the results obtained by the two finite element methods, thease errors were under 7% at most. Then, it is seen that the 2-dimensional finite element method can be used in order to analyze the S.I.F. K values upon a various thickness model.
To analyze S.I.F in the various thickness Model by using the 2-dimensional finite element method, this analysis was done in the case of plane strain condition with a view to plate thickness including crack.