高压物理学报2025，Vol.39Issue(9)：93-100,8.DOI:10.11858/gywlxb.20251010
6061铝电磁膨胀环的动态断裂应变统计规律
Statistical Law of Dynamic Fracture Strain Distribution of 6061 Aluminum Electromagnetic Expansion Ring
摘要
Abstract
The fracture strain distribution of ductile metal rings under dynamic loading has significant application value,and the electromagnetic expansion ring is a commonly used experimental loading method.However,currently there is a lack of effective in-situ observation technology in experiments,making it impossible to obtain high-precision fracture strain statistical data.In this paper,the newly developed close-packed photonic Doppler velocimetry(PDV)array testing technology was applied to the electromagnetic expanding ring experiment,and a large amount of high-confidence fracture strain experimental data were obtained.The statistical distribution of material yield strength was obtained through hardness measurements,a probabilistic constitutive model was established,and large-scale computations were carried out to obtain a wealth of fracture strain simulation results.By combining experiments with simulations,the strain rate effect of dynamic fracture strain in 6061 aluminum electromagnetic expanding ring and the rationality of the Weibull distribution assumption for fracture strain were analyzed.关键词
密排多普勒测速仪阵列/电磁膨胀环/断裂应变统计规律/应变率效应Key words
close-packed photonic Doppler velocimetry array/electromagnetic expansion ring/statistical law of fracture strain/strain rate effect分类
数理科学引用本文复制引用
蔡周峰,江燕,张豪,刘明涛..6061铝电磁膨胀环的动态断裂应变统计规律[J].高压物理学报,2025,39(9):93-100,8.基金项目
国家自然科学基金(12202422,11932018,12072332) （12202422,11932018,12072332）
