Numerical simulation of tensile behavior of corroded aluminum alloy 2024 T3
Numerical simulation of tensile behavior of corroded aluminum alloy 2024 T3
复制标题
腐蚀铝合金2024 T3拉伸行为数值模拟
DOI：
10.1108/ijsi-10-2014-0050
复制
发表时间：
2015
影响因子：
2.7
通讯作者：
S. Pantelakis
中科院分区：
文献类型：
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作者：
Dorothea Setsika;K. Tserpes;S. Pantelakis
目的 – 本文的目的是开发一种多尺度建模方法来模拟腐蚀铝合金 2024 T3 的拉伸行为。设计/方法/途径——该方法结合了两个有限元模型：代表凹坑的三维代表性晶胞模型和拉伸样本模型。这些模型分别位于微观和宏观尺度。对于不同的凹坑配置，模拟了腐蚀材料的局部均匀机械行为。然后，将凹坑的行为引入拉伸样品的不同区域（元素），并进行最终分析以模拟腐蚀材料的力学行为。该方法已应用于六个不同暴露周期的剥落腐蚀测试。研究结果——数值结果表明，凹坑和剥落区域的存在会降低材料的屈服强度。预测断裂伸长率与每次曝光的实验结果的比较...
Purpose – The purpose of this paper is to develop a multi-scale modeling approach for simulating the tensile behavior of corroded aluminum alloy 2024 T3. Design/methodology/approach – The approach combines two FE models: a model of a three-dimensional representative unit cell representing a pit and a model of the tensile specimen. The models lie at the micro- and macro-scales, respectively. The local homogenized mechanical behavior of the corroded material is simulated for different pit configurations. Then, the behavior of the pits is introduced into different areas (elements) of the tensile specimen and final analyses are performed to simulate the mechanical behavior of the corroded material. The approach has been applied to six different exposure periods of the exfoliation corrosion test. Findings – The numerical results show that the presence of pits and exfoliated areas reduces the yield strength of the material. The comparison of predicted elongation to fracture with the experimental of each exposur...