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Investigation of the Energy Absorption Characteristics of ...1446 N. Ahmed et al. / Investigation of the Energy Absorption Characteristics of Metallic Tubes with Curvy Stiffeners under Dynamic Axial Crushing Latin American Journal of Solids and Structures 14 (2017) 1443-1463 In this study, nature of -cells is exploited in single and bi-tubular metallic tubes by using
QUASI-STATIC AXIAL CRUSHING BEHAVIOR OF ALUMINUM .The axial crushing behavior of empty and Al close-cell foam-filled Al -tube designs (hexagonal and square) and E-glass woven fabric polyester composite and Al hybrid tubes were investigated through quasi-static compression testing.
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Energy-absorbing effectiveness factorthe dimensionless parameter has been examined for the static and dynamic axial crushing behaviour of thin-walled sections. The influence of foam fillings and the stiffening of circular and square tubes is examined. It transpires that, according to the energy-absorbing effectiveness factor, an axially crushed
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Dynamic axial crushing of origami crash boxes ...Nov 01, 2016 · Read "Dynamic axial crushing of origami crash boxes, International Journal of Mechanical Sciences" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.
Energy absorption characteristics of diamond core columns ...Both the single-objective and -objective optimizations are performed for columns under axial crushing load with core thickness and helix pitch of the honeycomb core as design variables. Models are optimized by -objective particle swarm optimization (MOPSO) algorithm to achieve maximum specific energy absorption (SEA) capacity and ...
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Crashworthiness design of -cell tapered tubes using ...In this article, crashworthiness performance and crushing behavior of tapered structures with four internal reinforcing plates under axial and oblique dynamic loadings have been investigated. These structures have a tapered form with five cross sections of square, hexagonal, octagonal, decagon and circular shape. In the first step, finite element simulations performed in LS-DYNA were validated ...
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EXPERIMENTAL AND NUMERICAL STUDY ON AXIAL .EXPERIMENTAL AND NUMERICAL STUDY ON AXIAL COMPRESSION OF METAL TUBES WITH HOLES 1JAFAR ROUZEGAR, 2MOHAMMAD ELAHI 1,2Department of Mechanical and Aerospace Engineering, Shiraz University of Technology, Shiraz, Iran E-mail: [email protected]
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Static and dynamic axial crushing of self-locking ...A new type of self-locking -cell structure fabricated by assembling four C-shaped open sections is proposed in this paper. Quasi-static and dynamic experimental tests are performed to investigate the axial crush resistance and energy absorption characteristics of this type of structures.
DYNAMIC AXIAL CRUSH OF AUTOMOTIVE RAIL- SIZED .DYNAMIC AXIAL CRUSH OF AUTOMOTIVE RAIL-SIZED COMPOSITE TUBES PART 3: BRAIDED VS. ... reinforcements made principally from carbon fiber was part of a -aspect crush tube program ... SEA (kJ/kg) is defined here as the net energy dissipated in the process of crushing the test. 4 specimen divided by the product of the maximum crush distance and ...
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Static and dynamic axial crushing of prismatic thin-walled ...In this paper, a novel approach is proposed to investigate the progressive collapse damage of prismatic thin walled metal columns with different regular cross sections, under the action of axial quasi-static and impact loads. The present work mainly focuses on implementation of some important factors which have been neglected in other studies.
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AXIAL CRUSH BEHAVIOUR OF SQUARE COLUMN WITH .shortcoming while at the same time, improving the impact performance. Static and dynamic axial crushing were performed by theoretical and finite element analysis to determine the initial peak force (IPF), crush force efficiency (CFE) and plastic specific energy absorption (SEA) of columns with external plunger of various taper angles.
[PDF]QUASI-STATIC CRUSHING OF DIFFERENT .QUASI-STATIC CRUSHING OF DIFFERENT CONFIGURATIONS OF METAL-COMPOSITES HYBRID TUBES UNDER AXIAL/LATERAL LOADING Dongdong Chen1, Guohua Zhu2, Xintao Huo3, Xinglong Liu4, Guangyong Sun5 1State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha, 410082, China.
Multi-objective reliability-based design optimization for ...Nov 16, 2018 · Ali M, Ohioma E, Kraft F et al (2015) Theoretical, numerical, and experimental study of dynamic axial crushing of thin walled pentagon and cross-shape tubes. Thin Walled Struct 94:253–272 CrossRef Google Scholar
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Energy-absorbing effectiveness factorA recent study has reported on the static and dynamic axial crushing behaviour of thin-walled cylindrical shells made from aluminium alloy, stainless steel and mild steel [11]. In order to assist in the comparison of the efficiencies of tubes made from different materials, an energy-absorbing effectiveness factor was introduced and defined as
HEXAGONAL CELL STRUCTURES UNDER POST-BUCKLING AXIAL .(2000) Dynamic axial crushing of -layer honeycomb panels and impact tensile behavior of the component members. International Journal of Impact Engineering 24:6-7, 659-671. Online publication date: 1-Jul-2000. Enboa Wu, Wu-Shung Jiang. (1997) Axial crush of metallic honeycombs.
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International Journal of Impact Engineering - MITDynamic axial crushing Implicit time integration Bathe method 3D-shell element Crash tube abstract The axial crushing and crashing of thin-walled high-strength steel tubes is performed using 3D-shell finite elements and an implicit time integration scheme. The calculated results are compared with
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Dynamic axial crushing of bitubular tubes with curvy ...Langseth, M. and Hopperstad, O. S. [1996] " Static and dynamic axial crushing of square thin walled aluminium extrusions," Int. J. Impact Eng. 18 ... Manmohan, D. G. [2015] " Deformation, energy absorption and crushing behavior of single, double and .
Multi-CRUSH - EVOCDAxial Crushing of Multi-Cell Multi-Corner Tubes An analytical formula for the prediction of mean crush force of corner -cell tubes is derived based on the super folding element theory [1], [2], [3] .
Structural Optimization of Thin-Walled Tubular Structures ...Explicit nonlinear finite element code LS-DYNA is used to perform dynamic simulations of axial crushing of square tubes. A linear elastic, piecewise linear plastic material (*MAT24) is used for modeling steel tubes with properties shown in Table 1. Generally, thin-walled structures under axial compression are modeled with plane stress shell ...
A theoretical analysis for the dynamic axial crushing of ...AbstractAn approximate theoretical analysis is presented for the mean crushing forces generated during the dynamic axial loading of top-hat and double-hat sections. The theoretical predictions compare favourably with experimental results reported in a companion article on spot-welded mild steel sections and with the empirical equations and theoretical predictions of other authors.
HEXAGONAL CELL STRUCTURES UNDER POST-BUCKLING AXIAL .Dynamic axial crushing of -layer honeycomb panels and impact tensile behavior of the component members. International Journal of Impact Engineering, Vol. 24, No. 6-7. Axial crush of metallic honeycombs. International Journal of Impact Engineering, Vol. 19, No. 5-6.
Structural Optimization of Thin-Walled Tubular Structures ...Explicit nonlinear finite element code LS-DYNA is used to perform dynamic simulations of axial crushing of square tubes. A linear elastic, piecewise linear plastic material (*MAT24) is used for modeling steel tubes with properties shown in Table 1. Generally, thin-walled structures under axial compression are modeled with plane stress shell ...
1. IntroductionAxial crushing behaviour is reached through four failure modes of global buckling, local buckling, fracture and progressive crushing for axial crushing of composite tubular structures and is defined as characteristic of the material absorbing energy by fragmentation and destruction.
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Dynamic Axial Crushing of a Square Column - YouTubeClick to view on Bing0:26Dec 04, 2012 · YouTube TV - Live TV like never before Loading... Now including HGTV, Food Network, TLC, Investigation Discovery, and much more. ... Dynamic Axial Crushing of a Square Column sahril afandi s ...
Dynamic axial crush response of circular cell honeycombs ...May 23, 2012 · To this end, we discuss the dynamic axial crushing of honeycombs, which is carried out using two methods, each providing a unique set of loading characteristics and facilitating a range of input crush velocity: (i) the wave loading device (WLD) method and (ii) the direct impact method (DIM).
HEXAGONAL CELL STRUCTURES UNDER POST-BUCKLING AXIAL .(2000) Dynamic axial crushing of -layer honeycomb panels and impact tensile behavior of the component members. International Journal of Impact Engineering 24:6-7, 659-671
Numerical and Experimental Study of Single-Walled and ...dynamic axial crushing tests of the single-walled and double-walled prismatic columns were conducted using the High Speed Impact Testing Machine available at the CSMD Laboratory-KAIST. As shown in Figure 4, the machine consist of a gas gun, gun projectile, impactor, .
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Static and dynamic axial crushing of Al/CRFP hybrid tubes ...This paper presents experimental and numerical studies on the axial crushing of the Al, CFRP and Al/CFRP hybrid square tubes with sing-cell and -cell sections. Static and dynamic axial crush tests are conducted for the tubes first. The crushing behaviors and deformation mechanism of the tubes are then investigated.
Axial Crushing of Uni-Sectional Bi-Tubular Inner Tubes ...with peak crushing force, mean crushing force and crush force effi-ciency values of 69.8 KN, 7.3 KJ and 0.75, respectively. Keywords Uni-sectional Bi-tubular Tubes, Energy Absorption, Finite Element Modeling, Dynamic Axial Crushing, Metallic Tubes, COPRAS Axial Crushing of Uni-Sectional Bi-Tubular Inner Tubes with Multiple Outer Cross-Sections
Quasi-Static Axial Compression of Origami Crash Boxes ...Abramowicz, W. [1983] " The effective crushing distance in axially compressed thin-walled metal columns," International Journal of Impact Engineering 1(3), 309–317. Crossref, Google Scholar; Abramowicz, W. and Jones, N. [1984] " Dynamic axial crushing of square tubes," International Journal of Impact Engineering 2(2), 179–208.