轴向撞击作用下内充泡沫铝薄壁铝合金腔体最优尺厚比选择  

Selection of Optimum Size-Thickness Ratio for Thin-Walled Aluminum Alloy Cavities Filled with Aluminum Foam Under Axial Impacts

作　　者：李显辉 孔德明 LI Xianhui;KONG Deming(College of Architectural Engineering,Shanxi Vocational University of Engineering Science and Technology,Jinzhong 030600,China)

机构地区：[1]山西工程科技职业大学建筑工程学院,山西晋中030600

出　　处：《太原学院学报（自然科学版）》2025年第1期1-8,共8页Journal of TaiYuan University:Natural Science Edition

基　　金：山西工程科技职业大学校级基金项目(KJ202309);山西省教育厅科技创新专项基金项目(2023L413)。

摘　　要：内充泡沫铝薄壁铝合金腔体在防撞吸能领域已经具备广泛的使用价值,但在最优截面尺寸选择方面的研究与应用较少。为进一步研究铝合金内充泡沫铝腔体最优截面尺寸,通过有限元软件ABAQUS建立了常见的方形铝合金腔体在撞击作用下的有限元模型。结果表明:建立的有限元模型在模拟内充泡沫铝铝合金腔体抗撞击性能方面具有良好的拟合度,同时,针对现有市场中方形铝合金腔体多尺寸截面,提出尺厚比作为其截面选择参数,通过运用数值建模和非线性拟合工具,得出常见尺寸下组合截面吸能最大化的截面尺寸。研究得出的低、中、高3种撞击能量下的截面最优尺厚比可为结构防撞击装置的设计提供参考。Thin-walled aluminum alloy cavities filled with aluminum foam have been widely used in the field of collision avoidance and energy absorption,but there are fewer researches and applications on the selection of optimal cross-sectional dimensions.In order to further study the optimal cross-sectional dimensions of the aluminum alloy cavity filled with foam aluminum alloy,a finite element model of a common square aluminum alloy cavity under the impact was established by the finite element software ABAQUS.The results show that the finite element model established in this paper has a good fit in simulating the impact resistance performance of aluminum alloy cavities filled with foam.At the same time,for the multi-size cross-section of square aluminum alloy cavities in the existing market,the foot-thickness ratio is proposed as a parameter for its cross-section selection,and the cross-section size that maximizes the energy absorption of the combined cross-section under the common sizes is derived through the use of numerical modeling and nonlinear fitting tools.The optimal cross-section size-thickness ratios for low,medium,and high impact energies obtained in this paper can be used as a reference for the design of structural anti-impact devices.

关 键 词：内充泡沫铝的薄壁铝合金管 撞击试验 破坏形态 能量耗散 最优尺厚比 

分 类 号：TB331[一般工业技术—材料科学与工程]