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1.长安大学 理学院,西安 710064
2.西安市结构损伤数字化检测技术重点实验室,西安 710064
邹俊岭,女,1998年生,河南驻马店人,硕士研究生;主要研究方向为多孔材料和结构力学性能;E-mail:2022112042@chd.edu.cn。
邓庆田,男,1980年生,陕西咸阳人,博士,副教授;主要研究方向为多孔材料和结构力学性能、损伤检测结构;E-mail:dengqt@chd.edu.cn。
收稿日期:2023-06-28,
修回日期:2023-07-24,
纸质出版日期:2025-03-15
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邹俊岭,邓庆田,李新波,等. 局部腐蚀对多孔结构力学性能的影响[J]. 机械强度,2025,47(3):1-10.
ZOU Junling,DENG Qingtian,LI Xinbo,et al. Effect of local corrosion on mechanical properties of the porous structure[J]. Journal of Mechanical Strength,2025,47(3):1-10.
邹俊岭,邓庆田,李新波,等. 局部腐蚀对多孔结构力学性能的影响[J]. 机械强度,2025,47(3):1-10. DOI: 10.16579/j.issn.1001.9669.2025.03.001.
ZOU Junling,DENG Qingtian,LI Xinbo,et al. Effect of local corrosion on mechanical properties of the porous structure[J]. Journal of Mechanical Strength,2025,47(3):1-10. DOI: 10.16579/j.issn.1001.9669.2025.03.001.
采取液滴法引入二氯甲烷溶液作为腐蚀介质,基于不同孔隙率的正四边形、正六边形和内凹形结构,分析了不同腐蚀周期和区域对聚乳酸(Polylactic Acid
PLA)多孔结构力学性能的影响,并结合有限元仿真结果进行对比分析。结果表明,内凹形多孔结构板受腐蚀周期的影响最小,其余两种结构受其影响有赖于孔隙率的大小;孔隙率72%的正六边形结构单胞元腐蚀缺陷承载能力最弱,内凹形结构的承载能力最强;孔隙率54%的正四边形结构受单胞元腐蚀影响最大;正六边形结构单胞元扩大区域腐蚀相比单胞元腐蚀承载能力较弱,正四边形结构单胞元扩大区域腐蚀相比单胞元腐蚀承载能力较强。
Dichloromethane solution was introduced as the corrosion medium by the liquid drop method.Based on the regular quadrilateral
regular hexagon and concave structures with different porosities,the effects of different corrosion cycles and areas on the porous structural mechanical properties of polylactic acid (PLA) were analyzed by comparing with the finite element simulation results.The results show that concave porous structure plate is the least affected by the corrosion cycle
while the other two structures are affected by it depending on the size of the porosity.The hexagonal structure with a porosity of 72% has the weakest corrosion defect bearing capacity
while the concave structure has the strongest bearing capacity.The regular quadrilateral structure with a porosity of 54% is most affected by the single cell corrosion.The corrosion bearing capacity of the expanded area of a single cell in a regular hexagonal structure is weaker than that of a single cell
while the corrosion bearing capacity of the expanded area of a single cell in a regular quadrilateral structure is stronger than that of a single cell.
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