The Deformation Process of Thin-Walled Box Beams Joined by Rivets under Three-Point Bending

2016 ◽  
Vol 254 ◽  
pp. 283-289
Author(s):  
Tomasz Sadowski ◽  
Marek Nowicki ◽  
Daniel Pietras ◽  
Przemysław Golewski
Keyword(s):  
Deformation Process ◽  
Mechanical Response ◽  
Experimental Tests ◽  
Equivalent Stiffness ◽  
Element Analysis ◽  
Three Point Bending ◽  
Flat Sheet ◽  
Box Beams ◽  
Thin Walled ◽  
Abaqus Software

This paper is focused on description of the mechanical response of the aluminum box-beams subjected to 3 point bending (3-PB). The main aim of this paper is to determine the effect of spacing between rivets on the equivalent stiffness and strength of the analised profile. The considered beams are composed of two sections: one of them is an aluminum omega profile and another is a composite flat sheet. Experimental tests were carried out for various spacing between rivets. Moreover, the corresponding numerical analyses by Finite Element Analysis (FEA) with application of the Abaqus software were done for estimate of the mechanical response of the box beams. The results show relationship between spacing of the rivets and values of carrying forces.

Experimental and Numerical Investigation of Critical Buckle Load of Composite Specimens

2015 ◽  
Vol 732 ◽  
pp. 85-90
Author(s):  
Lukáš Bek ◽  
Radek Kottner ◽  
Jan Krystek ◽  
Tomáš Kroupa
Keyword(s):  
Static Analysis ◽  
Glass Fibre ◽  
Large Deformations ◽  
Bending Test ◽  
Test Results ◽  
Beam Test ◽  
Three Point Bending ◽  
Box Beams ◽  
Buckle Beam ◽  
Thin Walled

Different carbon and glass fibre strips were subjected to the double clamp buckle beam test. Furthermore, thin-walled glass fibre box-beams were subjected to the three-point bending test. Results of experiments were compared to different numerical simulations using buckling analysis or static analysis considering large deformations.

Static and vibration characteristics of thin-walled box beams: An experimental investigation

2017 ◽  
Vol 20 (10) ◽  
pp. 1540-1559 ◽  
Author(s):  
Kiana Kashefi ◽  
Abdul Hamid Sheikh ◽  
Michael C Griffith ◽  
MS Mohamed Ali ◽  
Kazuo Tateishi
Keyword(s):  
Three Dimensional ◽  
Time History ◽  
Displacement Transducer ◽  
Vibration Characteristics ◽  
Element Analysis ◽  
Linear Variable Displacement Transducer ◽  
Dimensional Finite Element ◽  
Box Beams ◽  
Thin Walled ◽  
Three Dimensional Finite Element

Static and vibration characteristics of thin-walled straight and curved box beams were investigated experimentally. Three different beam configurations were considered for the tests: one straight and two curved box beams. The load was applied at the centroid of the box section for the straight and one curved beam specimens. However, for the other curved specimen, the load was applied eccentrically to investigate its behavior under the additional torsion induced by the eccentricity. Displacements and strains were obtained using linear variable displacement transducer, one-directional and rosette strain gages. The specimens were excited using an impact at their free ends. The time history of strains was obtained to calculate natural frequencies and damping ratios. The experiment results were compared with those obtained from three-dimensional finite element analysis for all cases. The results obtained from implementing tests on the straight specimen were also used to validate an efficient numerical method recently developed by the authors.

scholarly journals Sensitivity Analysis of Internally Reinforced Thin-Walled Hollow-Box Beams Subjected to Uncoupled Bending and Torsion

2019 ◽  
Vol 23 (1) ◽  
pp. 1-8
Author(s):  
Hugo Miguel Silva ◽  
Jerzy Wojewoda
Keyword(s):  
Finite Element Analysis ◽  
Sensitivity Analysis ◽  
Analysis Software ◽  
Element Analysis ◽  
Design Variables ◽  
The Finite Element Analysis ◽  
Box Beams ◽  
Thin Walled ◽  
Geometric Variables ◽  
Bending Loading

Abstract In this work, novel types of internally reinforced hollow-box beams were subjected to bending loading and studied using the finite element analysis software ANSYS. A parameterization of 3 geometric variables was performed, and deflection and effective deflection results were collected from 2 points at the model. The sensitivity analysis results are then discussed, with the aim of concluding if the selected design variables are adequate for optimization purposes.

Vibration Characteristics of Composite Thin-Wall Beams

2011 ◽  
Vol 250-253 ◽  
pp. 3993-4000
Author(s):  
Jing Min Ma ◽  
Yong Sheng Ren ◽  
Tao Tan
Keyword(s):  
Free Vibration ◽  
Natural Frequency ◽  
Equations Of Motion ◽  
Thin Wall ◽  
Cantilever Beams ◽  
Element Analysis ◽  
Lagrange’S Equation ◽  
The Finite Element Analysis ◽  
Box Beams ◽  
Thin Walled

The equations of motion for the free vibration of composite thin-walled closed-section beams are derived based on Lagrange’s equation of the second kind. Two stiffness configuration box beams are considered and corresponding closed solutions formula of natural frequency presented. The finite element analysis software, ANSYS is used to calculate the natural frequency and vibration mode shape of composite thin-walled cantilever beams. And the results are compared with closed solutions. The influence of composite elastic coupling and ply angle to thin-walled beams’ free vibration is investigated.

Finite Element Analysis on the Vibration Mode of Composite Thin-Walled Box Beam with Double-Cell Sections

2012 ◽  
Vol 569 ◽  
pp. 495-499
Author(s):  
Shuang Shuang Sun ◽  
Fang Wu Jia ◽  
Yong Sheng Ren
Keyword(s):  
Finite Element ◽  
Width Ratio ◽  
Finite Element Models ◽  
Modal Shape ◽  
Element Analysis ◽  
Finite Element Software ◽  
Box Beam ◽  
Box Beams ◽  
Length Width ◽  
Thin Walled

The modal analysis of composite thin-walled box beams with double-cell sections is carried out by the finite element software ANSYS. The finite element models are established first for the double-cell composite thin-walled box beams, then the vibration modes of two box beams: Circumferentially Uniform Stiffness (CUS) and Circumferentially Antisymmetric Stiffness (CAS) are calculated and analyzed. The effects of length-width ratio and width-height ratio on the natural frequency and the modal shape of the double-cell composite thin-walled box beams are discussed.

scholarly journals Experimental Validation of a Novel Thin-Walled Beam Prototype

2020 ◽  
Vol 22 (1) ◽  
pp. 7-24
Author(s):  
Hugo Miguel Silva ◽  
José Filipe Meireles ◽  
Jerzy Wojewoda
Keyword(s):  
Finite Element Analysis ◽  
Material Properties ◽  
Experimental Validation ◽  
Experimental Tests ◽  
Tensile Tests ◽  
Analysis Model ◽  
Element Analysis ◽  
Finite Element Analysis Model ◽  
Average Value ◽  
Thin Walled

AbstractIn this paper, an experimental validation of a novel beam prototype is performed. Tensile tests, both until rupture and on the elastic domain were done in order to determine the material properties. They were used then in Finite Element Analysis model built in ANSYS Mechanical APDL. Three experimental tests were done to the prototype, and, in order to minimize errors, the average value of the three tests determined, and compared with results obtained from the numerical model. It was shown that it was possible to manufacture the beam by the presented manufacturing methodology. An acceptable correlation between the numerical an experimental results was found.

Static and dynamic response of sandwich beams with lattice and pantographic cores

2021 ◽  
pp. 109963622110338
Author(s):  
Yury Solyaev ◽  
Arseniy Babaytsev ◽  
Anastasia Ustenko ◽  
Andrey Ripetskiy ◽  
Alexander Volkov
Keyword(s):  
Mechanical Performance ◽  
Lattice Structure ◽  
Unit Length ◽  
Experimental Tests ◽  
Plane Geometry ◽  
Sandwich Beams ◽  
Static Tests ◽  
Three Point Bending ◽  
The Core ◽  
The Impact

Mechanical performance of 3d-printed polyamide sandwich beams with different type of the lattice cores is investigated. Four variants of the beams are considered, which differ in the type of connections between the elements in the lattice structure of the core. We consider the pantographic-type lattices formed by the two families of inclined beams placed with small offset and connected by stiff joints (variant 1), by hinges (variant 2) and made without joints (variant 3). The fourth type of the core has the standard plane geometry formed by the intersected beams lying in the same plane (variant 4). Experimental tests were performed for the localized indentation loading according to the three-point bending scheme with small span-to-thickness ratio. From the experiments we found that the plane geometry of variant 4 has the highest rigidity and the highest load bearing capacity in the static tests. However, other three variants of the pantographic-type cores (1–3) demonstrate the better performance under the impact loading. The impact strength of such structures are in 3.5–5 times higher than those one of variant 4 with almost the same mass per unit length. This result is validated by using numerical simulations and explained by the decrease of the stress concentration and the stress state triaxiality and also by the delocalization effects that arise in the pantographic-type cores.

scholarly journals Discrete element analysis of the punching behaviour of a secured drapery system: from laboratory characterization to idealized in situ conditions

2021 ◽  
Author(s):  
Antonio Pol ◽  
Fabio Gabrieli ◽  
Lorenzo Brezzi
Keyword(s):  
Mechanical Response ◽  
Steel Wire ◽  
Discrete Element ◽  
Wire Mesh ◽  
Steel Plates ◽  
Loading Conditions ◽  
Element Analysis ◽  
In Situ Conditions ◽  
Wire Meshes

AbstractIn this work, the mechanical response of a steel wire mesh panel against a punching load is studied starting from laboratory test conditions and extending the results to field applications. Wire meshes anchored with bolts and steel plates are extensively used in rockfall protection and slope stabilization. Their performances are evaluated through laboratory tests, but the mechanical constraints, the geometry and the loading conditions may strongly differ from the in situ conditions leading to incorrect estimations of the strength of the mesh. In this work, the discrete element method is used to simulate a wire mesh. After validation of the numerical mesh model against experimental data, the punching behaviour of an anchored mesh panel is investigated in order to obtain a more realistic characterization of the mesh mechanical response in field conditions. The dimension of the punching element, its position, the anchor plate size and the anchor spacing are varied, providing analytical relationships able to predict the panel response in different loading conditions. Furthermore, the mesh panel aspect ratio is analysed showing the existence of an optimal value. The results of this study can provide useful information to practitioners for designing secured drapery systems, as well as for the assessment of their safety conditions.

Sign in / Sign up

Export Citation Format

Share Document