航空科学技术2025，Vol.36Issue(8)：34-42,9.DOI:10.19452/j.issn1007-5453.2025.08.005
铝合金点蚀的数字孪生建模及强度分析
Digital Twin Modeling and Strength Analysis on Aluminum Alloy Pitting Corrosion
摘要
Abstract
Accelerated corrosion testing of aircraft aluminum alloy structures is an important means of simulating service environments,but there are still problems such as difficulty in simulating localized corrosion such as pitting corrosion.The use of digital twin technology can predict the pitting process and provide technical support for constructing a digital model of the aircraft strcture.A digital twin model of aluminum alloy is established using an experimental results simulation damage matching method.Based on the Nernst-Planck diffusion equation,a computational model is developed to capture the sudden onset and evolution of surface corrosion in aluminum alloys.The differential equation governing corrosion diffusion is derived and numerically solved using the finite difference method to simulate the evolution of surface pitting morphology.Utilizing experimental data on the depth of pits,a three-dimensional representation of pitting is created to visually demonstrate the evolution process.Finite element analyses indicate that pitting can lead to stress concentration.The variation in pit depth has a significant effect on the maximum stress value.关键词
铝合金/点蚀/腐蚀损伤度/数字孪生/时间关联Key words
aluminum alloy/pitting/corrosion damage ratio/digital twin/time correlation分类
航空航天引用本文复制引用
张伟,孙靖觉,吕胜利,何卫平,梅晓峰,柳星..铝合金点蚀的数字孪生建模及强度分析[J].航空科学技术,2025,36(8):34-42,9.基金项目
航空科学基金(20230038053002) Aeronautical Science Foundation of China(20230038053002) （20230038053002）
