Comparison of European standard EN 310 and EN 789 in determining the bending strength and modulus of elasticity of red seraya (Shorea spp.) plywood panel: experimental and finite element analysis

2013 ◽  
Vol 71 (4) ◽  
pp. 483-490
Author(s):  
Tsen Shuk Fun ◽  
Mohd Zamin Jumaat
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Modulus Of Elasticity ◽  
Bending Strength ◽  
Plywood Panel ◽  
European Standard ◽  
Element Analysis

Performance enhancement of normal contact ratio gearing system through correction factor

2019 ◽  
Vol 13 (3) ◽  
pp. 5242-5258
Author(s):  
R. Ravivarman ◽  
K. Palaniradja ◽  
R. Prabhu Sekar
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Correction Factor ◽  
Bending Strength ◽  
Performance Enhancement ◽  
Transmission Ratio ◽  
Contact Ratio ◽  
Element Analysis ◽  
Normal Contact ◽  
Root Region

As lined, higher transmission ratio drives system will have uneven stresses in the root region of the pinion and wheel. To enrich this agility of uneven stresses in normal-contact ratio (NCR) gearing system, an enhanced system is desirable to be industrialized. To attain this objective, it is proposed to put on the idea of modifying the correction factor in such a manner that the bending strength of the gearing system is improved. In this work, the correction factor is modified in such a way that the stress in the root region is equalized between the pinion and wheel. This equalization of stresses is carried out by providing a correction factor in three circumstances: in pinion; wheel and both the pinion and the wheel. Henceforth performances of this S+, S0 and S- drives are evaluated in finite element analysis (FEA) and compared for balanced root stresses in parallel shaft spur gearing systems. It is seen that the outcomes gained from the modified drive have enhanced performance than the standard drive.

scholarly journals Simulasi Pembebanan Komponen Bender pada Desain Mesin Begel Fabricator Menggunakan Software Autodesk Inventor 2020

2021 ◽  
Vol 2 (2) ◽  
pp. 93-97
Author(s):  
Satriawan Dini Hariyanto ◽  
Wikan Kurniawan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cast Iron ◽  
Mild Steel ◽  
Modulus Of Elasticity ◽  
Material Parameter ◽  
Element Analysis ◽  
Material Parameters ◽  
Constituent Material ◽  
Loading Parameter

Stress analysis of the bender components in the design of the begel fabricator machine was carried out using FEA (Finite Element Analysis) with three variations of the constituent material parameters, namely 6061 aluminum, mild steel, and cast iron with a modulus of elasticity of 68.9 GPa, 220 GPa, 120.5 GPa, respectively. The test is carried out by a loading parameter 2520 MPa and fixed constraint. The maximum von misses stress and displacement obtained for each material parameter components using aluminum, mild steel, and cast iron are 17.78 MPa; 0.00765, 17.49 MPa; 0.00229, 17.62 MPa; 0.00427 respectively.

Account for Metal to Metal Contact Between Gasket Centering Ring and Flange Facing in Calculation Using the XP CEN\TS 1591-3 Method: Comparison With Other Analytical Method and Finite Element Analysis

2014 ◽  
Author(s):  
Hubert Lejeune ◽  
Yann Ton That
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Calculation Method ◽  
Analytical Calculation ◽  
Technical Specification ◽  
Method Comparison ◽  
Metal Contact ◽  
European Standard ◽  
Element Analysis ◽  
Bolted Flange

The european standard EN1591-1 [1], initially published in 2001, defines a calculation method for bolted gasketed circular flanges, alternative to the TAYLOR-FORGE method, used as the basic method in most codes. In 2007, a new part, XP CEN/TS 1591-3 [2], has been added to the EN1591 series. This technical specification enables to take into account the Metal to Metal Contact (MMC), appearing inside the bolt circle on some assemblies. Due to a lack of industrial feedback and detailed validation, this document has not been raised to the standard status. In that context, under the request of its Pressure Vessel and Piping commission, CETIM has performed a study comparing this calculation method to Finite Element Analysis (FEA) on several industrial configurations. After a description of the XP CEN/TS 1591-3 calculation method, the major results obtained for spiral wound gasketed joints where MMC appears between centering ring and flange facing are presented and compared with FEA results. Moreover, results obtained with other classical analytical calculation methods as TAYLOR FORGE and EN1591-1 on the same Bolted Flange Connections (BFC) configuration are also analysed and compared to XP CEN/TS 1591-3 results.

Determination of the Gasket Stress Distribution

2017 ◽  
Author(s):  
Manfred Schaaf
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Stress Analysis ◽  
Radial Direction ◽  
Fundamental Principle ◽  
European Standard ◽  
Calculation Algorithm ◽  
Element Analysis

The European Standard EN 1591-1 is used for the calculation of bolted flanged joints, stress analysis as well as for tightness proofs. In this calculation procedure gasket characteristics according to EN 13555 are used to describe the mechanical and the tightening behavior of gasket materials. With further developments in the calculation algorithm and the use of the realistic gasket behavior in the calculation more detailed results can be obtained, which are comparable to results obtained from Finite Element Analysis. The flange rotation and the resulting uneven gasket stress distribution in the radial direction during the assembly of the flanged joint is the fundamental principle in this development. The effective compressed gasket width has influence on the required gasket forces for the tightness proof as well as on the mechanical behavior of the flanged joint, and thus also on the stress analysis. In this paper, the determination of the effective gasket width using a newly developed approach [1] is optimized and the verification of this approach with Finite Element Analysis for several different gasket materials and flange geometries is shown.

Substrate Effect on Modulus of Elasticity and Hardness of Thin Film Under Nanoindentation Test

2012 ◽  
Author(s):  
Mesbah U. Ahmed ◽  
Rafiqul A. Tarefder
Keyword(s):  
Thin Film ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Modulus Of Elasticity ◽  
Empirical Relationship ◽  
Nanoindentation Test ◽  
Substrate Effect ◽  
Element Analysis ◽  
Al Thin Film

Mechanical properties of thin film under nanoindentation test by Finite Element Analysis (FEA) have been studied in this literature. An axi-symmetric bi-layer model has been developed in commercial finite element analysis software, ABAQUS. Aluminum (Al) comprises the thin film whereas Silicon (Si) comprises the substrate. This model has been simulated using the loading condition that mimics real nanoindentation test, i.e. an indenter has been probed to a predefined depth onto Al-thin film. Modulus of elasticity and hardness of thin film have been calculated by existing empirical relationship. Substrate effect on determination of film modulus and hardness has been investigated by varying the substrate modulus. It has been observed that substrate effect is pronounced on film modulus determination whereas hardness is not significantly sensitive to this effect. Depth of indentation has also been varied over a long range to observe the indentation effect on these parameters. It is obvious that film modulus is increased with depth increment. However, hardness variation is not regular. Different friction condition is also in the scope of this study. It has been observed that friction does not affect modulus of elasticity. It, however, affects hardness of thin film. This is attributed to the dissipation of the energy needed to overcome friction at film-indenter interface.

Structural Design and Finite Element Analysis for Planet Wheel Gear System

2014 ◽  
Vol 556-562 ◽  
pp. 1174-1177
Author(s):  
Xiao Jing Li ◽  
Cheng Si Li ◽  
Di Wang ◽  
Dong Man Yu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optimization Design ◽  
Bending Strength ◽  
Design Method ◽  
Design Tool ◽  
Gear System ◽  
Scale Model ◽  
Analysis Tool ◽  
Element Analysis

Calculation the gear bottom bending strength and the gear surface contacting stress are traditional wheel gear design method. It takes a long time to design and works out parameters for gears system. Nowadays, the optimization design and reliability theory are introduced into modern engineering, we can make full use of the calculator tool to look for the best design parameter. Modern powerful finite element analysis software packages such as ANSYS are now not only an analysis tool but a design tool as well. This kind of technology makes planet wheel gear system design quantified precisely combining with physics principles in one. In the study, we designed a planet carrier with traditional method and built three dimensional full-scale model in Pro/E software. Based on finite element analysis, the finally result of stress distribution and deformation distribution is obtained. The results indicate that the design can meet the requirement.

Optimization of fillet stress to enhance the bending strength through non-standard high contact ratio spur gears

2015 ◽  
Vol 230 (7-8) ◽  
pp. 1139-1148 ◽  
Author(s):  
P Marimuthu ◽  
G Muthuveerappan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Parametric Study ◽  
Bending Strength ◽  
Spur Gear ◽  
Gear Ratio ◽  
Spur Gears ◽  
Contact Ratio ◽  
Element Analysis ◽  
Gear Drives

The present study aims to determine the improvement in the bending strength of the non-standard high contact ratio spur gears based on the balanced (optimum) fillet stress of the pinion and gear. The average number teeth in contact is more than two for high contact ratio gear drives. In the non-standard high contact ratio spur gears, the rack cutter tooth thickness factor is more than 0.5, whereas the standard rack cutter tooth thickness factor is 0.5. The maximum fillet stresses of the pinion and gear is not equal for non-standard high contact ratio spur gear drives when the gear ratio increases. In order to avoid the fatigue failure of the gear, the fillet stresses of the pinion and gear should be balanced. This balanced stress is predicted as the optimum fillet stress. Hence, the present study focuses to optimize the fillet stress with respect to the rack cutter tooth thickness factor of the pinion and gear through finite element analysis. Also, a parametric study is carried out to obtain the influence of some gear parameters, such as gear ratio, teeth number in the pinion, pressure angle, addendum height and corrected gear drives (S+, S− and So) on the optimum fillet stress with respect to the rack cutter tooth thickness factor of the pinion and gear.

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