ABSTRACT:The stress triaxiality and lode angle are known to be most dominant fracture parameters in ductile materials. This paper proposes a three-dimensional failure strain surface for a ductile steel, called a low-temperature high-tensile steel (EH36), using average stress triaxiality and average normalized lode parameter, along with briefly introducing their theoretical background. It is an extension of previous works by Choung et al. (2011;2014a;2014b) and Choung and Nam (2013)
KEY WORDS:Average stress triaxiality 평균 응력 삼축비, Averge normalized lode parameter 평균 정규 로드 파라메터, Fracture strain surface 파단 변형률 평면, Uniuform true stress 균일 진 응력, Corrected true stress 수정 진 응력 ABSTRACT: An extended study was conducted on the fracture criterion by Choung et al. (2011;2012) and Choung and Nam (2013)
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