双管夹芯结构中外管撕裂模式的结构行程利用率和能量吸收效率高于相应的外管周期折叠模式。

For the foam-filled double tube structure, the stroke efficiency and the energy absorption efficiency under the outer tube tear failure mode is higher than that under the progressive buckling mode.

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胞状铝合金的能量吸收效率峰值和峰宽均大于胞状纯铝，表明胞状铝合金是一种更为优秀的吸能材料。

The energy absorption peak value and the peak width of cellular al alloy were bigger than those of cellular al, indicating that cellular al alloy is a better kind of material than cellular al.

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固溶时效热处理使压缩吸能能力随着孔隙率的增大而呈现规律性减小，并使能量吸收效率对孔隙率和孔径的敏感程度减小。

The energy absorption capacity decreased regularly along with the increase of porosity and the energy absorption efficiency became insensitive to pore size (d) and porosity (P_r).

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