Papers by Keyword: Lateral Compression

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Authors: H. Kobayashi, Masashi Daimaruya
429
Authors: Zhao Peng Zhou, Qin Fang, Fei Li, Xin Hua Zhu, Yan Mi Wang
Abstract: In order to understand the energy absorption characteristics of various types of steel tubes and provide certain basis for model selection in the engineering application, this paper adopts the experimental study to conduct the comparative study on lateral quasi-static compression energy absorption characteristics of three types of steel tubes, i.e. round steel tube, square steel tube and hexagonal steel tube. Through analysis of the test phenomenon, the total energy absorbed by equal deformation and the energy absorbed per unit mass, the result shows that the steel tube with hexagonal cross section is provided with such advantages as steady absorption, stable deformation mode and high energy absorption ratio, and is more suitable for application in engineering than the round steel tube and the square steel tube.
228
Authors: Zhao Peng Zhou, You Quan Qin, Fei Liu, Yan Mi Wang
Abstract: In order to enhance the lateral compression energy absorption capability of round steel tube without obviously increasing the mass of round steel tube, this paper has developed the polyurethane foam filled round steel tube and through experimental comparison, studied such parameters as the laterally-compressed platform loading, total absorbed energy and energy absorbed per unit mass for the filled tubes and empty tubes of three kinds of pipe diameter. The results show that the round steel tube filled with polyurethane foam can change the deformation mode of round steel tube and increase the energy absorption capability of steel tube substantially with very little increase of mass; the energy absorption efficiency is obviously higher than the one of empty steel tube.
13
Authors: Zhao Peng Zhou, Fei Liu, Yong Hong Gao, Fan Xi Xue
Abstract: From the previous researches, the author of this paper finds that the steel tube with the hexagonal section under the lateral compression has a good energy absorption property. In order to further enhance the energy absorption of the steel tube with the hexagonal section, this paper develops the polyurethane foam filled hexagonal steel tube, and through experiment, studies its characteristics of lateral compression energy absorption, and makes the comparative analysis against the hollow hexagonal steel tube. The results show that the hexagonal section steel tube filled with polyurethane foam has substantially growth in both the loads of the yield platform and the energy absorption capability.
210
Authors: Sripad S. Tokekar, Maloy K. Singha, Narinder K. Gupta
Abstract: An experimental investigation on the lateral collapse behaviour of woven fabric glass/epoxy composite tubes under quasi-static and impact loads are presented here. Composite tubes of different diameter to thickness ratios (D/t = 5.33 - 20.67) were compressed between two flat platens or by a short width square indenter. Impact tests were performed at the gravity drop hammer test setup. The fracture process and the energy absorption capability of the composite tubes under quasi-static and impact loads were studied. It was observed that, the lateral collapse mechanism of thick composite tubes (D/t < 10) was different from thinner tubes (D/t > 10). Finally, the progressive failure analysis of the composite tube was performed in finite element software ABAQUS. Good agreement was observed between the experimental results and numerical predictions.
296
Authors: Qing Chun Wang, Hao Long Niu, Guo Quan Wang, Yu Xin Wang
Abstract: Different aluminum foam filling lengths were used to increase the bending energy absorbing capacity of the popularly used hat sections. Bending energy-absorption performance of the thin-walled tubes was numerically studied by explicit non-linear software LS-Dyna. First empty hat section subjected to quasi-static bending crushing was simulated, then structures with different aluminium foam filling lengths were calculated, finally energy absorption capacity of these structures were compared. Calculation results showed that, the internal energy absorbed and mass specific energy absorption capacity of foam filled thin walled structures were increased significantly compared to the empty sections. The reason of the improvement was mainly due to the contact of the aluminium foam and the structure. Aluminium foam filling is a promising method for improving lateral energy absorbing capacity of thin-walled sections.
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