Compressive behavior of closed-cell aluminum alloy foams at strain rates of 10−3–450 s−1 has been studied experimentally. The fully stress–strain curves of specimens at medium strain rates were obtained using the High Rate Instron Test System, which can maintain a constant loading rate. The experimental results show that plateau stress and energy absorption capacity are remarkable dependent on strain rate, while the densification strain has a negligible dependence.
The authors acknowledge support from the National Natural Science Foundation of China (Grant No. 90716005, 10802055, 10972153), the Postdoctoral Science Foundation of China, the Natural Science Foundation of Shanxi Province (Grant No. 2007021005) and Program for the Homecomings Foundation and the Top Young Academic Leaders of Higher Learning Institutions of Shanxi.