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对两种AA 6063T6铝合金薄壁空管(方/圆管)结构以及填充泡沫铝的5种不同几何截面的薄壁夹芯管(单方/圆管填充,双方/圆管填充,双方管四角填充结构)分别进行了准静态轴向压缩实验,研究了各种薄壁结构的变形模式和吸能性能,比较了反映不同结构耐撞性的各种参数,如比能量吸收和能量吸收效率因子等。同时,研究了各种填充结构的几何参数对结构耐撞性能的影响,发现填充结构内管的尺寸对结构的耐撞性影响显著。研究结果显示,圆管类型的结构平均压垮载荷、比质量能量吸收、单位行程能量吸收以及能量吸收效率因子都较方管类型结构高。泡沫填充单/双圆管结构由于其较高的压垮力效率和能量吸收效率,能够较平稳高效地吸能,作为耐撞性结构元件具有很大的优势。
Five kinds of AA 6063T6 aluminum alloy thin-walled hollow tube (square / tube) structure and filled aluminum foam five different geometric cross-section thin walled sandwich tube (unilateral / round tube filling, both sides / tube filling, Filled structure) were respectively quasi-static axial compression experiments were conducted to study the deformation modes and energy absorption properties of various thin-walled structures, compared with various parameters that reflect the crashworthiness of different structures such as specific energy absorption and energy absorption efficiency factor Wait. At the same time, the influence of the geometrical parameters of various filling structures on the crashworthiness of the structure was studied. It was found that the size of the inner tube filled the structure had a significant impact on the crashworthiness of the structure. The results show that the average crush load of circular tube type structure is higher than that of square tube type structure than the mass energy absorption, unit stroke energy absorption and energy absorption efficiency factor. Foam filled single / double tube structure can absorb energy more smoothly and efficiently due to its higher crushing force efficiency and energy absorption efficiency, which has great advantages as a crashworthiness structural element.