Evaluation of the effect of inner and outer transverse and longitudinal grooves on energy absorption characteristics of cylindrical thin-walled tubes under quasi-static axial load

2017 ◽  
Vol 24 (1) ◽  
pp. 1-12 ◽  
Author(s):  
A. Alavi Nia ◽  
R. Rahpeima ◽  
S. Chahardoli ◽  
I. Nateghi
Keyword(s):  
Energy Absorption ◽  
Axial Load ◽  
Thin Walled ◽  
Absorption Characteristics

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.

Experimental study of corrugated tubes under lateral loading

2012 ◽  
Vol 226 (2) ◽  
pp. 109-118 ◽  
Author(s):  
A Eyvazian ◽  
I Akbarzadeh ◽  
M Shakeri
Keyword(s):  
Experimental Study ◽  
Energy Absorption ◽  
Lateral Loading ◽  
Lateral Direction ◽  
Static Tests ◽  
Crushing Force ◽  
Innovative Solution ◽  
Thin Walled ◽  
Energy Absorbers ◽  
Absorption Characteristics

Thin-walled tubes are widely used as energy absorbers in various vehicles and moving parts. The objective of this study is to investigate the energy absorption characteristics of tubes with corrugations in different geometries, under lateral loading. In order to produce corrugations, an innovative solution is introduced. Quasi-static tests were conducted to study the effect of changing the corrugation geometry (type and amplitude). The results show that tubes with corrugations have a higher mean crushing force which is directly proportional to the number of corrugations and their amplitudes. Moreover, it was observed that corrugated tubes can absorb approximately four times more energy than the tubes without corrugations in the same sizes and weights. Finally, it was found that corrugated tubes are more effective in lateral direction as energy absorbers, as they present suitable force–deflection responses.

Energy absorption characteristics of thin-walled steel tube filled with paper scraps

BioResources ◽  
2021 ◽  
Vol 16 (3) ◽  
pp. 5985-6002
Author(s):  
Peng Cheng ◽  
Qingchun Wang ◽  
Shi Ke
Keyword(s):  
Finite Element ◽  
Energy Absorption ◽  
Specific Energy ◽  
Steel Tube ◽  
Specific Energy Absorption ◽  
Crushing Force ◽  
Thin Walled Tube ◽  
The Mean ◽  
Thin Walled ◽  
Absorption Characteristics

The specific energy absorption of a thin-walled tube can be improved by filler. This study examined the potential use of a cheaper biomass filler, paper scraps, to enhance the energy absorption characteristics of the structure while reducing its cost, compared to that with a traditional filler such as foam material. Quasi-static crushing tests and finite element simulations were performed by using the explicit non-linear finite element software LS-DYNA to determine the improvements to the mean crushing force and specific energy absorption of the steel tube when filled with different densities of paper scraps. The mean crushing force and specific energy absorption of the empty tube, the paper scraps, and thin-walled tube filled with paper scraps were determined, and corresponding numerical simulations were performed. The simulation and test results showed that the impact performance of tube filled with paper scraps was greatly improved when paper scraps density was 0.35 g/cm3. By optimizing paper scraps filling structure, a new structure that could further enhance the specific energy absorption was obtained. The optimal scheme could increase the specific energy absorption of Q345 steel tube by 11.35%.

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