金属圆管劈裂变形及吸能安全特性研究

doi:10.16265/j.cnki.issn1003-3033.2017.03.021

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (3): 117-122.doi: 10.16265/j.cnki.issn1003-3033.2017.03.021

金属圆管劈裂变形及吸能安全特性研究

代连朋¹, 潘一山^2,3 教授, 王爱文^1,4

1 辽宁工程技术大学力学与工程学院,辽宁阜新 123000
2 辽宁大学,辽宁沈阳 110036
3 辽宁工程技术大学,辽宁阜新 123000
4 辽宁工程技术大学冲击地压研究院,辽宁阜新 123000

收稿日期:2016-12-01 修回日期:2017-01-21 发布日期:2020-11-22
作者简介:代连朋 (1992—),男,河北唐山人,硕士研究生,研究方向为煤矿冲击地压发生机制及冲击地压巷道吸能防冲安全支护。E-mail: DAI_lianpeng1992@163.com。
基金资助:
国家自然科学基金资助(51404131);辽宁省煤炭资源安全开采与洁净利用工程研究中心开放基金资助(LNTU15KF11)。

Study on splitting deformation and energy absorbing safety characteristics of metal circular tubes

DAI Lianpeng¹, PAN Yishan^2,3, WANG Aiwen^1,4

1 School of Mechanics and Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China
2 Liaoning University, Shenyang Liaoning 110036,China
3 Liaoning Technical University, Fuxin Liaoning 123000,China
4 Research Institute of Rock Burst, Liaoning Technical University, Fuxin Liaoning 123000,China

Received:2016-12-01 Revised:2017-01-21 Published:2020-11-22

摘要/Abstract

摘要： 为开发新型轴向劈裂式锚杆吸能构件,试验研究内径为26 mm,壁厚分别为3和4 mm的金属圆管试件劈裂变形及吸能安全特性,采用能量法分析其吸能原理。结果表明,试件劈裂吸能过程分为峰值载荷阶段和恒定载荷阶段,其中,恒定载荷阶段恒定载荷为59.34~116.60 kN,其作用下的吸能量为4.92~11.47 kJ;试件劈裂过程中变形稳定,形成“螺旋”板条,试件主要通过扩径塑性变形、管壁撕裂、板条摩擦耗散能量;试件恒定载荷值及相应吸能量试验结果与理论结果相符。

关键词: 金属圆管; 劈裂卷曲; 吸能特性; 吸能构件; 锚杆支护; 安全防护

Abstract: For the sake of developig a new kind of energy absorbing component used in the anchor bolt tail, the deformation and energy-absorption properties of axial splitting and curling of metal circular tubes were studied with the tubes, which were 26 mm in diameter and 3 mm or 4 mm in thickness.The energy absorption principle was analyzed by the energy method. The results show that there are two typical load stages in load-displacement curves, peak load and constant load, and constant axial load reaches up to 59.34-116.60 kN and the energy absorption value with constant load reaches up to 4.92-11.47 kJ. The axial splitting specimens deform stably, producing radially spiralstrips,and axial splitting behavior dissipates energy by plastic deformation of diameter expansion, splitting of the tube wall and strip friction. The theoretical values of constant axial load and energy absorption are close to the experimental values.

Key words: metal circular tube, axial splitting and curling, energy absorbing property, energy absorbing components, anchor bolt support, safety protection

中图分类号:

X924.4

代连朋, 潘一山, 王爱文. 金属圆管劈裂变形及吸能安全特性研究[J]. 中国安全科学学报, 2017, 27(3): 117-122.

DAI Lianpeng, PAN Yishan, WANG Aiwen. Study on splitting deformation and energy absorbing safety characteristics of metal circular tubes[J]. China Safety Science Journal, 2017, 27(3): 117-122.

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金属圆管劈裂变形及吸能安全特性研究

Study on splitting deformation and energy absorbing safety characteristics of metal circular tubes

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