含泡沫铝填充多胞方管吸能立柱防冲特性数值研究

TD324; 针对吸能防冲支架已有吸能构件防冲性能不足的问题,提出了一种泡沫铝填充多胞方管结构,根据泡沫材料填充薄壁结构轴向吸能理论得出其压溃平均载荷公式,采用ABAQUS/Explicit完成了普通方管、多胞方管和泡沫铝填充多胞方管轴向冲击仿真,并在此基础上对比研究了普通立柱与吸能立柱的抗冲击性能.结果表明:相对于普通方管和多胞方管,泡沫铝填充多胞方管产生了压溃形态理想的轴对称渐进叠缩变形,变形中初始承载峰值、载荷均值与吸能量均明显提高,有效变形距离减小,载荷波动降低,承载效率提高.随泡沫铝填充率增加,构件有效变形距离与吸能量减小;随泡沫铝孔隙度降低,构件载荷均方差降低,吸能量与承载效率提高...

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Published in煤炭科学技术 Vol. 51; no. 10; pp. 302 - 311
Main Authors 肖晓春, 朱恒, 徐军, 樊玉峰, 李子阳, 雷云
Format Journal Article
LanguageChinese
Published 辽宁工程技术大学辽宁省矿山环境与灾害力学重点实验室,辽宁阜新 123000%中煤科工集团沈阳研究院有限公司,辽宁抚顺 113122 01.10.2023
辽宁工程技术大学力学与工程学院,辽宁阜新 123000
Subjects
aluminum foam
泡沫铝
energy absorption and anti-impact characteristics
porosity
孔隙度
column
立柱
吸能防冲特性
多胞方管
multicellular square tube
Online AccessGet full text
ISSN0253-2336
DOI10.13199/j.cnki.cst.2022-1608

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Abstract TD324; 针对吸能防冲支架已有吸能构件防冲性能不足的问题,提出了一种泡沫铝填充多胞方管结构,根据泡沫材料填充薄壁结构轴向吸能理论得出其压溃平均载荷公式,采用ABAQUS/Explicit完成了普通方管、多胞方管和泡沫铝填充多胞方管轴向冲击仿真,并在此基础上对比研究了普通立柱与吸能立柱的抗冲击性能.结果表明:相对于普通方管和多胞方管,泡沫铝填充多胞方管产生了压溃形态理想的轴对称渐进叠缩变形,变形中初始承载峰值、载荷均值与吸能量均明显提高,有效变形距离减小,载荷波动降低,承载效率提高.随泡沫铝填充率增加,构件有效变形距离与吸能量减小;随泡沫铝孔隙度降低,构件载荷均方差降低,吸能量与承载效率提高.25%填充率下 60%孔隙度泡沫铝填充多胞方管是较为理想的吸能防冲构件.普通立柱受冲击后载荷激增,弯曲变形严重,立柱依靠自身变形吸收冲击能量,支护效果较差;而吸能立柱受冲击后吸能构件启动变形让位吸能,大幅度降低了立柱的载荷,吸收了外界大部分的冲击能量,避免了立柱的弯曲变形,提高了支架的抗冲击性能.
AbstractList TD324; 针对吸能防冲支架已有吸能构件防冲性能不足的问题,提出了一种泡沫铝填充多胞方管结构,根据泡沫材料填充薄壁结构轴向吸能理论得出其压溃平均载荷公式,采用ABAQUS/Explicit完成了普通方管、多胞方管和泡沫铝填充多胞方管轴向冲击仿真,并在此基础上对比研究了普通立柱与吸能立柱的抗冲击性能.结果表明:相对于普通方管和多胞方管,泡沫铝填充多胞方管产生了压溃形态理想的轴对称渐进叠缩变形,变形中初始承载峰值、载荷均值与吸能量均明显提高,有效变形距离减小,载荷波动降低,承载效率提高.随泡沫铝填充率增加,构件有效变形距离与吸能量减小;随泡沫铝孔隙度降低,构件载荷均方差降低,吸能量与承载效率提高.25%填充率下 60%孔隙度泡沫铝填充多胞方管是较为理想的吸能防冲构件.普通立柱受冲击后载荷激增,弯曲变形严重,立柱依靠自身变形吸收冲击能量,支护效果较差;而吸能立柱受冲击后吸能构件启动变形让位吸能,大幅度降低了立柱的载荷,吸收了外界大部分的冲击能量,避免了立柱的弯曲变形,提高了支架的抗冲击性能.
Author 徐军
雷云
朱恒
樊玉峰
李子阳
肖晓春
AuthorAffiliation 辽宁工程技术大学力学与工程学院,辽宁阜新 123000;辽宁工程技术大学辽宁省矿山环境与灾害力学重点实验室,辽宁阜新 123000%中煤科工集团沈阳研究院有限公司,辽宁抚顺 113122
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Author_FL LI Ziyang
FAN Yufeng
ZHU Heng
XIAO Xiaochun
LEI Yun
XU Jun
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DocumentTitle_FL Numerical study on anti-impact characteristics of energy absorbing column with multicellular square tube filled with aluminum foam
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Keywords aluminum foam
泡沫铝
energy absorption and anti-impact characteristics
porosity
孔隙度
column
立柱
吸能防冲特性
多胞方管
multicellular square tube
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Publisher 辽宁工程技术大学辽宁省矿山环境与灾害力学重点实验室,辽宁阜新 123000%中煤科工集团沈阳研究院有限公司,辽宁抚顺 113122
辽宁工程技术大学力学与工程学院,辽宁阜新 123000
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Snippet TD324; 针对吸能防冲支架已有吸能构件防冲性能不足的问题,提出了一种泡沫铝填充多胞方管结构,根据泡沫材料填充薄壁结构轴向吸能理论得出其压溃平均载荷公式,采...
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Title 含泡沫铝填充多胞方管吸能立柱防冲特性数值研究
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