Crushing behavior of a thin-walled circular tube with internal gradient grooves fabricated by SLM 3D printing

Yang, Zhe; Yu, Yangyang; Wei, Yanpeng; Huang, Chuanjun

doi:10.1016/j.tws.2016.11.004

Cited by 48 publications

(11 citation statements)

References 56 publications

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“…Very few published papers deal with tubular structures with dents, dimples or other flaws. An interesting solution has been presented by Z. Yang [23]. The subject of investigation was the crushing behavior of a thin-walled circular tube with internal gradient grooves.…”

Section: State Of the Art: An Overviewmentioning

confidence: 99%

“…FE simulations of crushing behavior were carried out. Very recently, Yang et al [15] investigated circular tubes with periodically situated (both along the circumference and the height) ellipsoidal dimples, subjected to axial crushing force. FE simulations of crushing behavior were performed and experimentally validated by quasi-static tests on 3D printed brass tubes.…”

Section: State Of the Art: An Overviewmentioning

confidence: 99%

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Energy absorption capability numerical analysis of thin-walled prismatic tubes with corner dents under axial impact

Ferdynus¹,

Kotełko²,

Král³

2018

Eksploatacja i Niezawodność – Maintenance and Reliability

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EnErgy absorption capability numErical analysis of thin-wallEd prismatic tubEs with cornEr dEnts undEr axial impact numEryczna analiza EnErgochłonności ciEnkościEnnych słupów pryzmatycznych z przEtłoczEniamiThe paper presents results of a parametric study into energy absorption capability of thin-walled square section columns with redrawn dents, subjected to axial impact compressive load. Thin-walled aluminum tubes with four dents in the corners were under investigation. The varying parameters were the dent's depth and distance of the dent to the base. The study was performed using Finite Element numerical code. Three crashworthiness indicators were examined: peak crushing force, crash load efficiency and stroke efficiency. The numerical results are shown in load-shortening diagrams, as well as diagrams and maps of crashworthiness indicators. It was found, that the main factor influencing a crushing mode and, subsequently, energy absorption capability, is a dent depth. The dent distance from the base is of less importance. Also a position of a dent, either at the bottom, or at the top base (the load application point) does not influence the crushing behavior significantly. For the deepest dents the relative increase of crash load efficiency (CLE) amounts 25% in comparison with the column without dents.

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Section: State Of the Art: An Overviewmentioning

confidence: 99%

Section: State Of the Art: An Overviewmentioning

confidence: 99%

Energy absorption capability numerical analysis of thin-walled prismatic tubes with corner dents under axial impact

Ferdynus¹,

Kotełko²,

Král³

2018

Eksploatacja i Niezawodność – Maintenance and Reliability

View full text Add to dashboard Cite

show abstract

“…For instance, Mamalis et al (1991) have observed four failure modes during the axial crushing of octagonal tubes. The effects of cross-sectional shape and geometric parameters were examined through both numerical simulations (Mamalis et al, 2003;Rossi et al, 2005;Fan et al, 2013) and experiments (Zhang and Zhang, 2012). In general, circular tubes can absorb more energy than polygonal and square tubes, but they have a high peak force, which is not suitable for an energy absorption device.…”

Section: Introductionmentioning

confidence: 99%

Quasi-static axial crushing of hexagonal origami crash boxes as energy absorption devices

Dai

Shi

et al. 2019

Mech. Sci.

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Thin-walled tubes are widely used as energy absorption devices for their low cost and high manufacturability. Introduction of the origami technique enables the tube to follow a pre-determined failure mode and to improve its energy absorption efficiency. This paper examines the energy absorption characteristics of the origami crash box under quasi-static axial crushing. Both experimental and numerical results show that the origami pattern develops a diamond-shaped mode, bringing a reduction in initial peak force and a significant increase in energy absorption compared to the conventional hexagonal tube. The sensitivity of its energy absorption performance to various parameters is studied, and it is shown to achieve 68.29 % increase in the specific energy absorption and 13.91 % reduction in the initial peak force in the optimal case. Furthermore, an analytical solution is presented for the energy absorption, which achieves reasonable agreement with the numerical results.Published by Copernicus Publications.

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“…Di Wang et al [1] fabricated overhanging structures with different inclined angles and designed the thin walls and cylinders with different geometrical dimensions to get the critical inclined angle for designing the porous structure and optimize the fabricating resolution. Zhe Yang et al [2] fabricated a 316L stainless steel thin-walled circular tube with preset internal circumferential rectangular groove defects using the SLM method. Johannes Günther et al [3] assessed the fatigue properties of Ti-6Al-4V samples designed with internal axial channels featuring a rough as-built surface.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Dimension Accuracy on the Inner Structure of the 3D Printed Parts Caused by the Scanning Strategy

Han

2019

Materials

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Selective laser melting (SLM) has been used in many fields recently, especially in the aerospace field. Many studies have been done on mechanical properties of the printed parts, but the dimension accuracy of the inner structure received little attention during these years. In this work, the dimension accuracy of the inner structure was measured and compared using different scanning strategies. Compared with the measured data, a new scanning strategy was used and finds that the dimension accuracy was better than the previous one that used a two-scanning strategy. To explain this phenomenon, finite element analysis (FEA) was used to show the temperature distribution after a 0.1 s cooling using two different scanning strategies, which caused the dimensional deviation in printing.

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Crushing behavior of a thin-walled circular tube with internal gradient grooves fabricated by SLM 3D printing

Cited by 48 publications

References 56 publications

Energy absorption capability numerical analysis of thin-walled prismatic tubes with corner dents under axial impact

Energy absorption capability numerical analysis of thin-walled prismatic tubes with corner dents under axial impact

Quasi-static axial crushing of hexagonal origami crash boxes as energy absorption devices

A Study on the Dimension Accuracy on the Inner Structure of the 3D Printed Parts Caused by the Scanning Strategy

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