Shear Resistance of Trapezoidal Corrugated Web in Local Buckling

2014 ◽  
Vol 554 ◽  
pp. 421-425 ◽  
Author(s):  
Fathoni Usman
Keyword(s):  
Finite Element Method ◽  
Slenderness Ratio ◽  
Local Buckling ◽  
Shear Resistance ◽  
Experimental Results ◽  
The Finite Element Method ◽  
Corrugated Web ◽  
Shear Buckling ◽  
Buckling Coefficient ◽  
Good Agreement

This paper presents analytical studies using Eigenvalue buckling analysis in the Finite Element Method to determine shear buckling and subsequently determine shear resistance of thin plated member with trapezoidal corrugated web. The result is compared with experimental results. It is found that the proposed equations give good agreement to the experimental results. However, the buckling coefficient k is still not generate a good shear stress based on its slenderness ratio hw/tw.

Modeling of tensile and bending properties of biaxial weft knitted composites

2015 ◽  
Vol 22 (3) ◽  
pp. 303-313 ◽  
Author(s):  
Ozgur Demircan ◽  
Shinsuke Ashibe ◽  
Tatsuya Kosui ◽  
Asami Nakai
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Beam Theory ◽  
Experimental Results ◽  
Composite Panel ◽  
The Finite Element Method ◽  
Bending Properties ◽  
Bending Modulus ◽  
Laminate Beam ◽  
Good Agreement

AbstractWithin the scope of experiments, the effect of aramid and glass yarns as stitch and biaxial (warp and weft) yarns in the biaxial weft knitted (BWK) composite was compared. After production of four types of composite panel using the hand lay-up method, the tensile and bending properties of the BWK composites were investigated both experimentally and numerically. The composite with the glass stitch and biaxial yarns exhibited higher tensile and bending properties than did the composite with the aramid stitch and biaxial yarns. The good agreement between the experimental results and the numerical results validated the applicability of the finite-element method for the BWK composites. The laminate beam theory was utilized as another modeling method for calculation of the bending modulus.

scholarly journals Optimization of EDM Parameters for Production of Biomedical Materials

2021 ◽  
Vol 7 (2) ◽  
pp. 1-8
Author(s):  
Mukesh Kumar Rakesh ◽  
Dr. Syed Faisal Ahmed
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Solution ◽  
Literature Survey ◽  
Experimental Results ◽  
Physical Parameters ◽  
The Finite Element Method ◽  
Critical Areas ◽  
Cylindrical Cup ◽  
Good Agreement

The finite element method (FEM) is used for simulating complex intricate shapes of industrial sheet forming operation. Effective physical parameters, as well as the numerical solution, influence the parameters of this phenomenon and its numerical prediction of results. In this study, to investigate the influence of different embossing patterns and embossing depths on the critical areas appearing during deep-drawn of a cylindrical cup. The numerical results are found from the literature survey to be in good agreement with the experimental results and accurate thinning distributions had been predict.

scholarly journals Elastic Web Buckling Stress and Ultimate Strength of H-Section Beams Dominated by Web Buckling

2020 ◽  
Vol 2020 ◽  
pp. 1-18
Author(s):  
Jiaxing Ma ◽  
Tao Wang ◽  
Yinhui Wang ◽  
Kikuo Ikarashi
Keyword(s):  
Ultimate Strength ◽  
Shear Force ◽  
Slenderness Ratio ◽  
Local Buckling ◽  
Elastic Buckling ◽  
Buckling Stress ◽  
Web Buckling ◽  
Buckling Coefficient ◽  
The Web ◽  
Good Agreement

Numerical analyses and theoretic analyses are presented to study the elastic buckling of H-section beam web under combined bending and shear force. Results show that the buckling stress of a single web with clamped edges gives a good agreement with the buckling stress of an H-section beam web when the local buckling of the beam is dominated by the web buckling. Based on theoretic analyses, a parametric study is conducted to simplify the calculation of buckling coefficients. The parameters involved are clarified first, and the improved equations for the buckling coefficient and buckling stress are suggested. By applying the proposed method, the web buckling slenderness ratio is defined. It is verified that the web buckling slenderness ratio has a strong correlation with the normalized ultimate strength of H-section beams when the buckling of the beams is dominated by web buckling. Finally, a design equation is proposed for the ultimate strength of H-section beams.

scholarly journals Numerical And Experimental Study Of Producing Flanges On Hollow Parts By Extrusion With A Movable Sleeve

2015 ◽  
Vol 60 (3) ◽  
pp. 1917-1922 ◽  
Author(s):  
A. Gontarz ◽  
G. Winiarski
Keyword(s):  
Finite Element Method ◽  
Experimental Study ◽  
Failure Modes ◽  
Experimental Results ◽  
New Method ◽  
Special Device ◽  
The Finite Element Method ◽  
Forming Process ◽  
Forging Press ◽  
Good Agreement

Abstract The paper presents the numerical and experimental results of a new method for producing flanges on hollow parts. With this new method, the flange is extruded by a movable sleeve. This innovative technique is modelled numerically by the finite element method. The effect of workpiece and finished product geometries on the forming process is investigated and failure modes are identfied. The numerical reults are then verified in experiments. The tests are conducted using a three-slide forging press equipped with a special device. The numerical and experimental results show a good agreement, which proves that the developed method is correct.

scholarly journals Numerical and Experimental Study of Producing Flanges on Hollow Parts by Extrusion with a Movable Sleeve / Badania Teoretyczno-Doświadczalne Procesu Wyciskania Z Zastosowaniem Ruchomej Tulei Kołnierza We Wsadach Drążonych

2015 ◽  
Vol 60 (4) ◽  
pp. 2733-2738
Author(s):  
A. Gontarz ◽  
G. Winiarski
Keyword(s):  
Finite Element Method ◽  
Experimental Study ◽  
Failure Modes ◽  
Experimental Results ◽  
New Method ◽  
Special Device ◽  
The Finite Element Method ◽  
Forming Process ◽  
Forging Press ◽  
Good Agreement

The paper presents the numerical and experimental results of a new method for producing flanges on hollow parts. With this new method, the flange is extruded by a movable sleeve. This innovative technique is modelled numerically by the finite element method. The effect of workpiece and finished product geometries on the forming process is investigated and failure modes are identfied. The numerical reults are then verified in experiments. The tests are conducted using a three-slide forging press equipped with a special device. The numerical and experimental results show a good agreement, which proves that the developed method is correct.

Effect of tip radius on nanoindentation

1991 ◽  
Vol 6 (12) ◽  
pp. 2623-2628 ◽  
Author(s):  
C.W. Shih ◽  
M. Yang ◽  
J.C.M. Li
Keyword(s):  
Finite Element Method ◽  
Continuum Model ◽  
Experimental Results ◽  
The Finite Element Method ◽  
Spherical Cap ◽  
Indentation Tests ◽  
Loading And Unloading ◽  
Tip Radius ◽  
Good Agreement ◽  
Incremental Loading

The blunt tip geometry of the so-called nanoindenter is modeled by a spherical cap of various radii. The relation between area and penetration depth of the indenter is comparable with experimental results if the radius of the tip is about 1.0 μm. Simulation of indentation tests was carried out using the finite element method by incremental loading and unloading based on a continuum model. Good agreement with the experimental results for nickel is obtained also for a tip radius of 1.0 μm.

Experimental and Finite Element Characterization of the Crippling Failure of Composite Stiffeners

2006 ◽  
Vol 326-328 ◽  
pp. 1773-1776
Author(s):  
Jin Hwe Kweon ◽  
Sang Min Choi ◽  
Hee Jin Son ◽  
Ji Young Choi ◽  
Jin Ho Choi ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Progressive Failure ◽  
Local Buckling ◽  
Equilibrium Path ◽  
The Finite Element Method ◽  
Progressive Failure Analysis ◽  
Good Agreement ◽  
Element Method

Progressive failure analysis based on the complete unloading method was conducted to investigate the crippling failure of carbon/epoxy composite stiffeners under axial compression. A modified arc-length algorithm was incorporated into a nonlinear finite element method to trace the equilibrium path after local buckling. For the validation of the finite element method, several carbon/epoxy Z-section stiffeners were tested in compression. The finite element results on the buckling and crippling stresses showed good agreement with the experimental results.

Fundamental Concepts for “Corner” Forming Limit Diagrams and Closed-Form Formulas for Planar Tube Hydroforming Analysis

2005 ◽  
Vol 128 (4) ◽  
pp. 874-883 ◽  
Author(s):  
L. M. Smith ◽  
J. J. Caveney ◽  
T. Sun
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Closed Form ◽  
Tube Hydroforming ◽  
Experimental Results ◽  
Forming Limit ◽  
The Finite Element Method ◽  
Forming Limit Diagrams ◽  
Form Approach ◽  
Good Agreement

A family of closed-form formulas for calculating minimum corner-fill radii in planar sections of tube hydroformed products is introduced. Corner forming limit diagrams relating the limiting major strain to the minimum corner-fill radius are introduced. The theory accounts for friction effects and accommodates regular shaped polygon die sections. This effort represents an exploration into a method for design and analysis of tube hydroforming processes without employing the finite element method and while using a closed form approach for capturing friction effects. Good agreement with experimental results is observed.

Free Vibration of Blade Packets

1977 ◽  
Vol 19 (1) ◽  
pp. 13-21 ◽  
Author(s):  
J. Thomas ◽  
H. T. Belek
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Free Vibration ◽  
Flexural Rigidity ◽  
Vibration Characteristics ◽  
Experimental Results ◽  
The Finite Element Method ◽  
Reasonable Accuracy ◽  
Good Agreement ◽  
Element Method

The free-vibration characteristics of shrouded blade packets are studied using the finite-element method. The effects of various weight ratios, flexural rigidity ratios and length ratios between the blades and shrouds on the frequencies of vibration of the blade packet are investigated. It is shown that the vibration characteristics of a multibladed packet can be predicted with reasonable accuracy from the inference diagram of a two-bladed packet. The theory developed can be easily adapted for more complex blade packet configurations. The results presented for the frequencies of vibration are compared with experimental results and show good agreement with those of other investigators.

Analysis of the Contact Deformation of Tread Blocks

1992 ◽  
Vol 20 (4) ◽  
pp. 230-253 ◽  
Author(s):  
T. Akasaka ◽  
K. Kabe ◽  
M. Koishi ◽  
M. Kuwashima
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Deformation Behavior ◽  
Contact Deformation ◽  
The Finite Element Method ◽  
The Road ◽  
Loss Of Contact ◽  
Tread Rubber ◽  
Good Agreement ◽  
Rubber Block

Abstract The deformation behavior of a tire in contact with the roadway is complicated, in particular, under the traction and braking conditions. A tread rubber block in contact with the road undergoes compression and shearing forces. These forces may cause the loss of contact at the edges of the block. Theoretical analysis based on the energy method is presented on the contact deformation of a tread rubber block subjected to compressive and shearing forces. Experimental work and numerical calculation by means of the finite element method are conducted to verify the predicted results. Good agreement is obtained among these analytical, numerical, and experimental results.

Sign in / Sign up

Export Citation Format

Share Document