1.上海理工大学 能源与动力工程学院,上海 200093
2.上海理工大学 机械工程学院,上海 200093
3.华东理工大学 承压系统与安全教育部重点实验室,上海 200237
刘红侠,女,1998年生,安徽亳州人,硕士研究生;主要研究方向为机械强度;E-mail:18456775157@163.com。
杨杰(通信作者),男,1987年生,山东菏泽人,教授,博士研究生导师;主要研究方向为重要装备强度、寿命及可靠性;E-mail:yangjie@usst.edu.cn。
收稿:2023-12-13,
修回:2024-04-30,
纸质出版:2025-12-15
移动端阅览
刘红侠,崔元元,王骁晓,等. 基于GTN模型的单向受拉有限大均质平板内椭圆形双裂纹合并准则研究[J]. 机械强度,2025,47(12):107-117.
LIU Hongxia,CUI Yuanyuan,WANG Xiaoxiao,et al. Study on coalescence criterion of double elliptic cracks in finite homogeneous plates under the uniaxial tensile load based on GTN model[J]. Journal of Mechanical Strength,2025,47(12):107-117.
刘红侠,崔元元,王骁晓,等. 基于GTN模型的单向受拉有限大均质平板内椭圆形双裂纹合并准则研究[J]. 机械强度,2025,47(12):107-117. DOI: DOI:10.16579/j.issn.1001.9669.2025.12.010.
LIU Hongxia,CUI Yuanyuan,WANG Xiaoxiao,et al. Study on coalescence criterion of double elliptic cracks in finite homogeneous plates under the uniaxial tensile load based on GTN model[J]. Journal of Mechanical Strength,2025,47(12):107-117. DOI: DOI:10.16579/j.issn.1001.9669.2025.12.010.
以含椭圆形双裂纹均质平板为研究对象,基于Gurson-Tvergaard-Needleman(GTN)损伤模型,针对不同尺寸椭圆形双裂纹的合并行为进行研究,并对基于裂纹间距比的椭圆形双裂纹合并准则进行了探索。结果表明,在以裂纹间距比为坐标的坐标系中,裂纹合并区域与不合并区域存在着明显的分界线。在分界线及下方为双裂纹合并区域,在分界线上方为双裂纹不合并区域。基于裂纹间距比,可建立椭圆形双裂纹合并准则。
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.
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