Study on coalescence criterion of double elliptic cracks in finite homogeneous plates under the uniaxial tensile load based on GTN model
LIU Hongxia
CUI Yuanyuan
WANG Xiaoxiao
LIU Fang
YANG Jie
CHEN Haofeng
Abstract：Based on the Gurson-Tvergaard-Needleman(GTN)damage model,the coalescence behavior of double elliptical cracks with different sizes and the coalescence criterion based on crack spacing ratio was studied in homogeneous plates with elliptical double cracks.The results show that there is an obvious dividing line between the crack coalescence region and the non-coalescence region in the coordinate system based on the crack spacing ratio.The rigon below and on the boundary line corresponds to the coalescence of double cracks,while the region above the line corresponds to the non-coalescence of double cracks.Based on the crack spacing ratio,the coalescence criterion of double elliptical cracks can be established.
Keywords：Coalescence criterionDouble elliptic cracksCrack spacing ratioGTN modelHomogeneous plate
Publication Date：2025-12-15
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：11( 107-117 )