scholarly journals Design of multi-cell tailored property columns under oblique loading

2021 ◽  
Author(s):  
İsmail ÖZTÜRK
Keyword(s):  
Oblique Loading

Simulation of thin-walled double hexagonal aluminium 5754 alloy foam-filled section subjected to direct and oblique loading

2021 ◽  
Vol 42 ◽  
pp. 2822-2828
Author(s):  
Samer Abdulqadir ◽  
Bassam Alaseel ◽  
M.N.M. Ansari
Keyword(s):  
Oblique Loading ◽  
Foam Filled ◽  
Thin Walled

Study on Crashworthiness Characteristics of Several Concentric Thin Wall Tubes

2010 ◽  
Author(s):  
Parisa Hosseini Tehrani ◽  
Sajad Pirmohammad
Keyword(s):  
Finite Element ◽  
Optimum Combination ◽  
Thick Wall ◽  
Thin Wall ◽  
Finite Element Program ◽  
Linear Dynamic ◽  
Wall Structures ◽  
Moving Body ◽  
Oblique Loading ◽  
Element Program

There is a growing interest in the use of thin-wall structures as a means of absorbing the kinetic energy of a moving body. Multi-layered thin-wall structures are more efficient and lighter than thick-wall structures, and show better crashworthiness characteristics. In this task, several concentric aluminum thin wall tubes as energy absorber under axial and oblique loading are studied and optimum combination of these tubes is presented. The weight of the tubes is optimized while crashworthiness of tubes is not compromised. The commercial finite element program LS-DYNA that offers non-linear dynamic simulation capabilities was used in this study.

scholarly journals Effect of Oblique Loading on Energy Absorption Capacity of Rectangular Tube

2015 ◽  
Vol V4 (05) ◽  
Author(s):  
Prashant Hupare ◽  
Siddheshwar Tuljapure ◽  
Keyword(s):  
Energy Absorption ◽  
Absorption Capacity ◽  
Energy Absorption Capacity ◽  
Oblique Loading ◽  
Rectangular Tube

Modelling the load–deformation response of deep foundations under oblique loading

2006 ◽  
Vol 21 (9) ◽  
pp. 1375-1380 ◽  
Author(s):  
K. Johnson ◽  
P. Lemcke ◽  
W. Karunasena ◽  
N. Sivakugan
Keyword(s):  
Deep Foundations ◽  
Deformation Response ◽  
Oblique Loading

scholarly journals A 3-D Finite Element Study of the Influence of Crown-Implant Ratio on Stress Distribution

2013 ◽  
Vol 24 (6) ◽  
pp. 635-641 ◽  
Author(s):  
Sandra Lucia Dantas de Moraes ◽  
Fellippo Ramos Verri ◽  
Joel Ferreira Santiago Junior ◽  
Daniel Augusto de Faria Almeida ◽  
Caroline Cantieri de Mello ◽  
...  
Keyword(s):  
Finite Element ◽  
Bone Tissue ◽  
Three Dimensional ◽  
Maximum Principal Stress ◽  
Von Mises Stress ◽  
Bone Block ◽  
Crown Height ◽  
Oblique Loading ◽  
Von Mises ◽  
Three Dimensional Finite Element

The purpose of this study was to assess the influence of the crown height of external hexagon implants on the displacement and distribution of stress to the implant/bone system, using the three-dimensional finite element method. The InVesalius and Rhinoceros 4.0 softwares were used to generate the bone model by computed tomography. Each model was composed of a bone block with one implant (3.75x10.0 mm) with external hexagon connections and crowns with 10 mm, 12.5 mm and 15 mm in height. A 200 N axial and a 100 N oblique (45°) load were applied. The models were solved by the NeiNastran 9.0 and Femap 10.0 softwares to obtain the results that were visualized by maps of displacement, von Mises stress (crown/implant) and maximum principal stress (bone). The crown height under axial load did not influence the stress displacement and concentration, while the oblique loading increased these factors. The highest stress was observed in the neck of the implant screw on the side opposite to the loading. This stress was also transferred to the crown/platform/bone interface. The results of this study suggest that the increase in crown height enhanced stress concentration at the implant/bone tissue and increased displacement in the bone tissue, mainly under oblique loading.

Crash of automotive side member subjected to oblique loading

2011 ◽  
Vol 6 (31) ◽  
Author(s):  
Salwani M. S
Keyword(s):  
Side Member ◽  
Oblique Loading

116 Elastoplastic Compressive Behavior for Thin-Walled Circular Tubes Subjected to Oblique Loading

2005 ◽  
Vol 2005 (0) ◽  
pp. 31-32
Author(s):  
Kuniharu USHIJIMA ◽  
Kenichi MASUDA ◽  
Dai-Heng CHEN
Keyword(s):  
Compressive Behavior ◽  
Circular Tubes ◽  
Oblique Loading ◽  
Thin Walled

Study on the collapse of tapered tubes subjected to oblique loads

2008 ◽  
Vol 222 (11) ◽  
pp. 2025-2039 ◽  
Author(s):  
P Hosseini-Tehrani ◽  
S Pirmohammad ◽  
M Golmohammadi
Keyword(s):  
Finite Element ◽  
Cross Section ◽  
Numerical Models ◽  
Point Of View ◽  
Finite Element Code ◽  
Energy Absorber ◽  
Explicit Finite Element ◽  
Bending Deformation ◽  
Oblique Loading

In this work, several antisymmetric tapered tubes with an inner stiffener under axial and oblique loading are studied and optimum dimensions of the tapered tube are derived from a crashworthiness point of view. The importance of detecting these dimensions is optimizing the weight while the crashworthiness of tube is not damaged. By using an internal stiffener, crashworthiness is improved against oblique loads, and the sensitivity of tubes with respect to oblique loads and bending deformation is diminished. The numerical models have been developed using the explicit finite element code LS-DYNA. The crashworthiness of the optimized tapered tube is compared with that of an octagonal-cross-section tube which is known as the best energy absorber model in the literature. It is shown that an optimized tapered tube has an average of 29.3 per cent less crushing displacement in comparison with octagonal-section tube when both tubes have the same weights and the same peaks of crushing load. Finally, the orientation of loading is changed and the best orientation is proposed.

Origami Crash Boxes Subjected to Dynamic Oblique Loading

2017 ◽  
Vol 84 (9) ◽  
Author(s):  
Caihua Zhou ◽  
Liangliang Jiang ◽  
Kuo Tian ◽  
Xiangjun Bi ◽  
Bo Wang
Keyword(s):  
Energy Absorption ◽  
High Performance ◽  
Slenderness Ratio ◽  
Absorption Capacity ◽  
Tube Length ◽  
Parameter Study ◽  
Original Design ◽  
Oblique Loading ◽  
The Comparative Study ◽  
Better Than

The energy absorption capacity of origami crash boxes (OCB) subjected to oblique loading is investigated in the present study. A conventional square tube (CST) with identical weight is employed as benchmark. The comparative study reveals that the origami crash box is more desirable than the conventional square tube in most of the range of load angle. A parameter study is performed to assess the effect of geometry parameters on the energy absorption characteristics. The geometry parameters are tube length L, tube width b, module length l, and width of folded lobe c. Considering that bamboo with large slenderness ratio could effectively resist wind load, a bulkhead-reinforced origami crash box is proposed as a high-performance energy absorption device. And an optimum structure designed based on the parameter study is investigated. The result suggests that the proposed tube performs much better than the original design.

Irregular Implant Design Decreases Periimplant Stress and Strain Under Oblique Loading

2017 ◽  
Vol 26 (5) ◽  
pp. 744-750 ◽  
Author(s):  
Ling He ◽  
Jiwu Zhang ◽  
Xiucheng Li ◽  
Hongcheng Hu ◽  
Songhe Lu ◽  
...  
Keyword(s):  
Implant Design ◽  
Stress And Strain ◽  
Oblique Loading
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