Theoretical prediction and numerical studies of expanding circular tubes as energy absorbers

Yan, Jiali; Yao, Shuguang; Xu, Ping; Peng, Yong; Shao, Heng; Zhao, Shizhong

doi:10.1016/j.ijmecsci.2015.11.022

Cited by 79 publications

(17 citation statements)

References 19 publications

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“…Given all abovementioned comments, an optimum shape of the mandrel should be designed in terms of system efficiency (E tot , SAET) and potential manufacturing cost. This head shape of mandrel was adopted from a study performed by Yan et al [22]. From Table 2, it can be concluded that this kind of mandrel improves the amount of absorbed energy in the ES part of the system and subsequently enhance the SAEE criterion significantly.…”

Section: Effect Of Impactor Shapementioning

confidence: 99%

Practicability of metallic hybrid systems in enhancing the energy absorption capacity: expansion and buckling mechanisms

Paygozar

Sadigh

2020

J Braz. Soc. Mech. Sci. Eng.

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In this paper, the efficiency of a new hybrid design of energy absorber systems is investigated to improve the capability of the system in absorbing the kinetic energy of vehicles in case of a crash. This setup implements two well-known energy absorption mechanisms simultaneously to enhance the energy dissipation capacity of the system while occupying a limited constant space. The system consists of two individual mechanisms, expansion of a circular tube accompanied by buckling of two inner tubes, which dissipates the energy through friction and plastic deformations. This study comprises several case studies surveyed under identical loading conditions. Experimental results are utilized to validate finite element simulations thereby analyzing several case studies so as to achieve the maximum efficiency of the system via geometrical optimizations. This study shows promising outcomes about the improvement in the system capacity in energy absorption while utilizing hybrid systems.

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Section: Effect Of Impactor Shapementioning

confidence: 99%

Practicability of metallic hybrid systems in enhancing the energy absorption capacity: expansion and buckling mechanisms

Paygozar

Sadigh

2020

J Braz. Soc. Mech. Sci. Eng.

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“…In recent years, the expansion of circular tubes has drawn more and more attention in much more critical applications where accurate dimensions, smooth surface finishes, and long-term safe and trouble-free operations are of great importance such as catheters for medical application, passive energy absorbers in automotive industry, etc. [3][4][5].…”

Section: Literature Reviewmentioning

confidence: 99%

Indirect Extrusion: A Multifaceted Approach of Sub-surface Tubular Expansion

Pervez¹,

Qamar²,

Al-Abri³

et al. 2018

Extrusion of Metals, Polymers and Food Products

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Extrusion and indirect extrusion is a very old manufacturing process used in multitudes of applications mainly focused on transportation, household and power industries. Indirect extrusion has found an interesting application in petroleum industry, which resulted in resolving many unsolvable issues over the last few decades. The current and expected future global demand for hydrocarbons became a driving force for researchers to find new comprehensive and cheaper solutions for hydrocarbon production. The challenges faced in oil and gas fields, while drilling, constructing and operating new and old vertical/horizontal wells, are many. The use of indirect extrusion for insitu expansion of sub-surface tubulars used in wells revolutionized the drilling and completion as opposed to one and half decade back. The emergence of solid expandable tubular technology has changed the basics of how we design and construct wells. The original development of the technology was to overcome the challenges faced by the petroleum industry to reach ultra-deep reservoirs, off-shore drilling, drilling in highpressure/difficult zones and repair/maintenance of old/ageing wells. However, it gained significant interest of researchers and operators in providing solutions to wide-range problems. The development of a computational framework using finite element method (FEM) enabled to determine the force required for expansion and resulting dimensional changes in final product, which is of direct assistance to the field engineers. The effect of friction and stress variations along contact surface is also determined.

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“…Another study concerning expanding circular tubes in order to dissipate the kinetic energy of the dynamic impacts through plastic deformation and friction was done by Yan et al [ 11 ]. The paper presents a theoretical model that takes into consideration shear deformation and the results of FEM numerical modeling.…”

Section: Introductionmentioning

confidence: 99%

Crashworthiness Characteristic of Dynamically Expanded Circular Tubes Made of Light Alloys: Experimental and Theoretical Investigation

Kaczyński

2020

Materials

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The paper presents the process of dynamic expansion of thin-walled pipes made of T6 temper 7075 aluminum alloy. The obtained results were related to the mass of tested elements, which allowed for calculating the specific energy absorption. The registered crushing force was in the range of 600–800 kN/kg. The obtained values were much greater than the crushing force of traditional crash boxes made of steel (80–120 kN/kg) or AZ31 magnesium alloy sheets (150 kN/kg). The analytical model for predicting crushing force depending on the thickness of the pipe wall was developed and proven to be correct by conducting real experiments and FEM simulation. The mathematical model for energy absorption named further as ETMEA (expanding tubes model for energy absorption) was developed based on calculated energy-deflection curves. It was proven that the energy absorption could be easily scaled. In cases where high energy absorption is needed, it can be easily achieved by increasing the thickness, while for lower energy absorption application, the thickness may be reduced and the goal may be achieved by selecting the appropriate length of the profile.

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Theoretical prediction and numerical studies of expanding circular tubes as energy absorbers

Cited by 79 publications

References 19 publications

Practicability of metallic hybrid systems in enhancing the energy absorption capacity: expansion and buckling mechanisms

Practicability of metallic hybrid systems in enhancing the energy absorption capacity: expansion and buckling mechanisms

Indirect Extrusion: A Multifaceted Approach of Sub-surface Tubular Expansion

Crashworthiness Characteristic of Dynamically Expanded Circular Tubes Made of Light Alloys: Experimental and Theoretical Investigation

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