Compression performance of closed-cell aluminium foam under different temperatures and strain rates

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Journal of Vibration and Shock ›› 2020, Vol. 39 ›› Issue (23) : 17-20.

LI Xueyan, LI Zhibin, ZHANG Duo

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Abstract

SHPB and MTS machine were employed to conduct quasi-static and dynamic compression tests to study mechanical performance of closed-cell aluminum foam with different densities under different temperatures and strain rates.The test results showed that the crushing strength of aluminum foam increases with increase in its relative density under quasi-static and dynamic conditions, the crushing strength has a power exponential relationship with the change of relative density; closed-cell aluminum foam has a very strong temperature softening effect, its crushing strength drops with increase in temperature and has a linear relationship with variation of temperature; aluminum foam has an obvious sensitivity to strain rate, its crushing strength increases with increase in strain rate.Finally, an empirical formula for crushing strength of closed-cell aluminum foam related to relative density, temperature and strain rate was obtained through fitting.

Key words

closed-cell aluminum foam / mechanical performance / temperature / strain rate / crushing strength

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LI Xueyan, LI Zhibin, ZHANG Duo. Compression performance of closed-cell aluminium foam under different temperatures and strain rates[J]. Journal of Vibration and Shock, 2020, 39(23): 17-20

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