通过试验方法研究了薄壁铝管塑性变形缓冲器在准静态作用下的吸能特性。为了对各种缓冲器的缓冲性能进行综合评价，给出了三类缓冲器缓冲性能的评价方法。分析了薄壁金属管塑性变形缓冲器在工作过程中的变形机理，在此基础上，提出了通过对缓冲器胀环的不定径部分进行预处理，可以大大的提高缓冲器的理想吸能效率，减小缓冲力在工作过程中的波动。最后，对12种经过预处理后的薄壁铝管塑性变形缓冲器进行了试验，结果表明，通过该方法可以大大提高缓冲器的理想吸能效率，验证了该方法的正确性与可行性。

Energy absorption characteristic of energy absorber on the thin-wall metal tube’s plastic deformation under quasi-static loading are studied by test method. Three kinds of evaluation methods are put forward, which can be used to evaluate the cushion properties of energy absorber comprehensively. Based on the analysis of deformation mechanism of energy absorber on the thin-wall metal tube’s plastic deformation, it is obtained that the energy absorber’s ideal energy absorption efficiency can be improved, and load fluctuation can be reduced through pre-processing expansion ring of the energy absorber. At last, energy absorption characteristic of the 12 types of energy absorber, which are pre-processed under, are studied by experiments, and the results show that, the pre-processed energy absorber can greatly increase the ideal energy absorption efficiency.