Optimization of energy absorption properties of thin-walled tubes with combined deformation of folding and circumferential expansion under axial load

2018 ◽  
Vol 130 ◽  
pp. 57-70 ◽  
Author(s):  
Mostafa Abolfathi ◽  
Ali Alavi Nia
Keyword(s):  
Energy Absorption ◽  
Axial Load ◽  
Absorption Properties ◽  
Thin Walled

scholarly journals Factors Affecting the Compression and Energy Absorption Properties of Small-Sized Thin-Walled Metal Tubes

2020 ◽  
Vol 2020 ◽  
pp. 1-12
Author(s):  
Xiaoqin Hao ◽  
Jia Yu ◽  
Weidong He ◽  
Yi Jiang
Keyword(s):  
Energy Absorption ◽  
Simulation Models ◽  
Simulation Method ◽  
Engineering Practice ◽  
Small Ring ◽  
Metal Tube ◽  
Absorption Properties ◽  
Factors Affecting ◽  
Thin Walled ◽  
Hollow Metal

To solve the problem of the effective cushioning of fast-moving mechanical components in small ring-shaped spaces, the factors affecting the compression and energy absorption properties of small-sized hollow metal tubes were studied. Simulation models were constructed to analyse the influences of tube diameter, wall thickness, relative position, and number of stacked components on the compression and energy absorption properties. The correctness of the simulation method and its output were verified by experiments, which proved the effectiveness of compression and energy absorption properties of small-sized thin-walled metal tubes. The research provides support for the application of metal tube buffers in armament launch technology and engineering practice.

Energy absorption properties of non-convex multi-corner thin-walled columns

2012 ◽  
Vol 51 ◽  
pp. 112-120 ◽  
Author(s):  
Zhiliang Tang ◽  
Shutian Liu ◽  
Zonghua Zhang
Keyword(s):  
Energy Absorption ◽  
Absorption Properties ◽  
Thin Walled

Experimental and Numerical Study - Effects of Crush Initiators under Quasi-Static Axial Load of Thin Wall Square Tube

2014 ◽  
Vol 660 ◽  
pp. 628-632
Author(s):  
Jos Istiyanto ◽  
Suci Hakiman ◽  
D.A. Sumarsono ◽  
G. Kiswanto ◽  
A.S. Baskoro ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Axial Load ◽  
Numerical Study ◽  
Experimental Result ◽  
Thin Wall ◽  
Axial Loads ◽  
Computation Result ◽  
Electric Cars ◽  
Local Product ◽  
Thin Walled

Crush initiators are used to improve the energy absorption and reduce the peak crush load at the time of the initial accident. This study aims to determine the effect of crush initiators on thin-walled square tube of local product which is applied on the front rail Electric Cars University of Indonesia under the quasi static axial loads. Crush initiator was designed in the form of two parallel holes with a diameter of 6.5 mm at a distance of 20 mm from the surface of the tube on each side. Analysis was done by comparing the experimental result with the result of numerical analysis by using finite element method of ANSYS. The result showed the significant effect from the crush initiators on decreasing the peak crush load and increasing the energy absorption and showed a similar pattern between the experimental and numerical computation result.

Axial-impact buckling modes and energy absorption properties of thin-walled corrugated tubes with sinusoidal patterns

2015 ◽  
Vol 94 ◽  
pp. 410-423 ◽  
Author(s):  
Zhifang Liu ◽  
Wenqian Hao ◽  
Jiamiao Xie ◽  
Jingshuai Lu ◽  
Rui Huang ◽  
...  
Keyword(s):  
Energy Absorption ◽  
Absorption Properties ◽  
Axial Impact ◽  
Buckling Modes ◽  
Thin Walled

Energy absorption properties of thin-walled square tube with lateral piecewise variable thickness under axial crashing

2019 ◽  
Vol 36 (8) ◽  
pp. 2588-2611
Author(s):  
Shutian Liu ◽  
Xueshan Ding ◽  
Zeqi Tong
Keyword(s):  
Numerical Calculation ◽  
Energy Absorption ◽  
Variable Thickness ◽  
Absorption Properties ◽  
Content Type ◽  
Explicit Formulation ◽  
Crushing Force ◽  
Thin Walled Tube ◽  
The Mean ◽  
Thin Walled

Purpose This paper aims to study the energy absorption properties of the thin-walled square tube with lateral piecewise variable thickness under axial crashing and the influence of the tube parameters on energy absorption. Design/methodology/approach In this work, the energy absorption properties of the thin-walled square tube were analyzed by theoretical, numerical and experimental approach. The numerical results are obtained based on the finite element method. The explicit formulation for predicting the mean crushing force of the tube with lateral piecewise variable thickness was derived based on Super Folding Element method. The limitation of the prediction formulation was analyzed by numerical calculation. The numerical calculation was also used to compare the energy absorption between the tube with lateral piecewise variable thickness and other tubes, and to carry out the parametric analysis. Findings Results indicate that the thin-walled tube with lateral piecewise variable thickness has higher energy absorption properties than the uniform thickness tubes and the tubes with lateral linear variable thickness. The thickness of the corner is the key factor for the energy absorption of the tubes. The thickness of the non-corner region is the secondary factor. Increasing the corner thickness and decreasing the non-corner thickness can make the energy absorption improved. It is also found that the prediction formulation of the mean crushing force given in this paper can quickly and accurately predict the energy absorption of the square tube. Originality/value The outcome of the present research provides a design idea to improve the energy absorption of thin-walled tube by designing cross-section thickness and gives an explicit formulation for predicting the mean crushing force quickly and accurately.

Experimental and numerical studies on failure and energy absorption of composite thin-walled square tubes under quasi-static compression loading

2020 ◽  
Vol 21 (6) ◽  
pp. 623-634
Author(s):  
Haolei Mou ◽  
Zhenyu Feng ◽  
Jiang Xie ◽  
Jun Zou ◽  
Kun Zhou
Keyword(s):  
Finite Element ◽  
Shell Model ◽  
Energy Absorption ◽  
Failure Mode ◽  
Failure Criterion ◽  
Finite Element Models ◽  
Static Compression ◽  
Compression Loading ◽  
Thin Walled ◽  
Simulation Results

AbstractTo analysis the failure and energy absorption of carbon fiber reinforced polymer (CFRP) thin-walled square tube, the quasi-static axial compression loading tests are conducted for [±45]3s square tube, and the square tube after test is scanned to further investigate the failure mechanism. Three different finite element models, i.e. single-layer shell model, multi-layer shell model and stacked shell mode, are developed by using the Puck 2000 matrix failure criterion and Yamada Sun fiber failure criterion, and three models are verified and compared according to the experimental energy absorption metrics. The experimental and simulation results show that the failure mode of [±45]3s square tube is the local buckling failure mode, and the energy are absorbed mainly by intralaminar and interlaminar delamination, fiber elastic deformation, fiber debonding and fracture, matrix deformation cracking and longitudinal crack propagation. Three different finite element models can reproduce the collapse behaviours of [±45]3s square tube to some extent, but the stacked shell model can better reproduce the failure mode, and the difference of specific energy absorption (SEA) is minimum, which shows the numerical simulation results are in better agreement with the test results.

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