Analytical and experimental investigations into the controlled energy absorption characteristics of thick-walled tubes with circumferential grooves

被引：26

作者：

Darvizeh, Abolfazl ^{[1
,3
]}

Darvizeh, Mansour ^{[2
]}

Ansari, Reza ^{[2
]}

Meshkinzar, Ata ^{[2
]}

机构：

[1] Islamic Azad Univ, Anzali Branch, Dept Mech Engn, Fac Engn, Bandar Anzali, Iran

[2] Univ Guilan, Dept Mech Engn, Rasht, Iran

[3] Iranian Soc Mech Engn, Shiraz, Iran

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2014年 / 28卷 / 10期

关键词：

Axial crushing; Circumferential grooves; Energy absorption; Thick-walled tube; AXIAL-COMPRESSION; METAL TUBES; SQUARE TUBES; FRUSTA; COLLAPSE; SECTION; MODEL;

D O I：

10.1007/s12206-014-0933-5

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this paper, the energy absorption characteristics of grooved circular tubes are investigated under quasi-static loading condition. For experiments, thick-walled tubes with circumferential grooves are prepared. The grooves divide the thick-walled tube into several shorter thin-walled portions. Specimens are subjected to axial crushing load to observe the effect of distribution of circular grooves on the deformation mechanism and energy absorption capacity. Geometrical parameters of the specimens are designed utilizing the Taguchi method to cover a reasonably wide range of groove length-to-wall thickness ratios. An analytical approach based on the concept of energy dissipation through the plastic hinges is applied. Taking the effect of strain hardening into account, the obtained analytical results are in good agreement with the experimental ones. The agreement between analytical and experimental results may indicate the validity of the proposed analytical approach. Desirable mechanism of deformation observed justifies the pre-forming method for obtaining favorable energy absorption characteristics.

引用

页码：4199 / 4212

页数：14

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