Strain rate and fracture analysis in closed-cell aluminum foams in tension: Quasi-static to dynamic loads

被引：0
作者：
Yao, Yiming [1 ,2 ]
Xie, Lianlian [1 ]
Xi, Huifeng [3 ,4 ]
Rong, Yao [5 ]
Mobasher, Barzin [6 ]
机构：
[1] Southeast Univ, Sch Civil Engn, Nanjing 210096, Peoples R China
[2] State Key Lab Safety Durabil & Hlth Operat Long Sp, Nanjing 210096, Peoples R China
[3] Jinan Univ, Sch Mech & Construct Engn, Guangzhou 510632, Guangdong, Peoples R China
[4] Univ Oxford, Dept Engn Sci, Parks Rd, Oxford OX1 3PJ, England
[5] Anyang Fosun Heli New Mat Co Ltd, Anyang, Peoples R China
[6] Arizona State Univ, Sch Sustainable Engn & Built Environm, Tempe, AZ 85287 USA
来源：
MATERIALS TODAY COMMUNICATIONS | 2025年 / 44卷
关键词：
Aluminum foam; Dynamic tensile behavior; Strain rate sensitivity; Finite element model; Digital image correlation; COMPRESSIVE DEFORMATION-BEHAVIOR; ALLOY FOAM; DAMAGE; COMPOSITE; PROPERTY; DENSITY;
D O I：
10.1016/j.mtcomm.2025.111959
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study examines the tensile characteristics of closed-cell aluminum foams over a range of strain rates, encompassing both quasi-static and dynamic conditions. An extensive experimental series was performed utilizing a servo-hydraulic testing machine to assess tensile behavior at strain rates ranging from 10(-4) s(-1 )to 100 s(-1). Tensile strength is found to rise with increasing strain rate. Significant strain localization and progressive crack propagation are observed, leading to material failure under dynamic loading conditions. Finite element analysis incorporating a stochastic circular pore model is employed to simulate the experimental behavior, with results in close agreement. Employing digital image correlation offered comprehensive insights into strain fields, enhancing the understanding of crack initiation and propagation mechanisms. This research delivers a thorough comprehension of aluminum foams' sensitivity to strain rate and fracture behavior, which is vital for optimizing their use in impact protection and energy absorption systems.
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页数：16
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