Accurate and efficient method for analyzing mixed-mode SIFs for inclined surface cracks in semi-infinite bodies by using numerical influence function method
作者： Kyaw Phyo Myat , Naoki Osawa , Ramy Gadallah , Satoyuki Tanaka
DOI: 10.1016/J.TAFMEC.2019.102471
关键词: Stress intensity factor 、 Face (geometry) 、 Traction (engineering) 、 Poisson distribution 、 Mathematical analysis 、 Semi-infinite 、 Mathematics 、 Stress (mechanics) 、 Surface (mathematics) 、 Finite element method
摘要: Abstract An effective technique to compute mixed-mode stress intensity factors (MM-SIFs) for inclined surface cracks in semi-infinite bodies under arbitrary fields is proposed and validated. The this study accurate handiness calculating MM-SIFs of different crack angles by using only one non-inclined cracked model. benefit achieved the influence function method (IFM) evaluate MM-SIFs. A fully-automated coefficient database (ICDB) calculation system developed based on IFM. interaction integral (IIM) including face traction (CFT) integral, which can improve accuracy SIF solutions, employed ICDB. Once ICDB unit distributed load (UDL) established a target finite element (FE) model, distributions be calculated accurately short time. validated comparing mode-I MM-SIF solutions obtained IFM with well-established reference Poisson’s ratios. effect ratio also discussed solutions.
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