当前位置: X-MOL 学术Int. J. Fatigue › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Crack nucleation from non-metallic inclusions in aluminum alloys described by peridynamics simulations
International Journal of Fatigue ( IF 6 ) Pub Date : 2021-08-14 , DOI: 10.1016/j.ijfatigue.2021.106475
Mohammad Rezaul Karim 1 , Kai Kadau 2 , Santosh Narasimhachary 3 , Francesco Radaelli 4 , Christian Amann 4 , Kaushik Dayal 5 , Stewart Silling 6 , Timothy C. Germann 1
Affiliation  

Conventional engineering methods oftentimes have challenges in the quantification of crack nucleation processes from manufacturing defects that are relevant for engineering component lifing. We present peridynamic simulation framework for the description of the crack nucleation process from cluster of non-metallic inclusions in aluminum alloys. Our non-local simulation framework characterizes crack nucleation process as multiple micro-crack nucleation events from individual inclusions, and eventually one micro-crack dominates. We define individual stages of the crack nucleation process, i.e., nucleation, micro-crack, technical, and crack initiation, that allow a quantification and meta model development of both the individual stages and the entire crack nucleation process.



中文翻译:

近场动力学模拟描述的铝合金中非金属夹杂物的裂纹形核

传统的工程方法通常在量化与工程部件寿命相关的制造缺陷中的裂纹成核过程方面存在挑战。我们提出了近场动力学模拟框架,用于描述铝合金中非金属夹杂物簇的裂纹形核过程。我们的非局部模拟框架将裂纹成核过程表征为来自单个夹杂物的多个微裂纹成核事件,最终一个微裂纹占主导地位。我们定义了裂纹成核过程的各个阶段,即成核、微裂纹、技术和裂纹萌生,允许对各个阶段和整个裂纹成核过程进行量化和元模型开发。

更新日期:2021-08-26
down
wechat
bug