Finite element analysis and simple design calculation method for rectangular CFSTs under local bearing forces

2016 ◽  
Vol 106 ◽  
pp. 316-329 ◽  
Author(s):  
You-Fu Yang ◽  
Zhu Wen ◽  
Xiang-He Dai
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Calculation Method ◽  
Design Calculation ◽  
Simple Design ◽  
Element Analysis

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.

scholarly journals Design and Finite Element Analysis of Differential Multi-Gauging System

2020 ◽  
Vol 8 (6) ◽  
pp. 3250-3254
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Measurement System ◽  
Process Time ◽  
Design Calculation ◽  
Productivity Improvement ◽  
Moving Plate ◽  
Element Analysis ◽  
Time Saving ◽  
Differential Housing

Objective to checked four-wheeler transmission or differential assembly. To reduce or minimize the differential assembly end play, for that we must calculate gap and put standard shim at the end of shaft while assembly. For that requirement of customer to give customized gauging system which gives precise measurement, Effort less, easy process, Time saving and productivity improvement. The require system in three stages to distance B, distance A and Gap between both distance. Therefore, the work on design and customized gauging system for shim selection method through design calculation and finite element analysis. The system will fully reliable and strong with the help of Finite element analysis of multi- gauging system for future aspect. As study of system Main Locator and Moving plate have more load and forces while gauging condition. For that we study the design and complete FEA analysis. Also, to ensure the reliability of the differential measurement system, the researcher was required to verify the precision and accuracy of the measurement system by repeatability trials. In the differential housing bearing to bearing distance measurement and inspection procedure, operator and the indirect gauging mechanism are the two key elements.

scholarly journals Finite Element Analysis and Calculation Method of Residual Flexural Capacity of Post-fire RC Beams

2020 ◽  
Vol 14 (1) ◽  
Author(s):  
Bin Cai ◽  
Bo Li ◽  
Feng Fu
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Calculation Method ◽  
Concrete Cover ◽  
Fe Model ◽  
Fire Tests ◽  
Rc Beams ◽  
Fire Exposure ◽  
Flexural Capacity ◽  
Element Analysis

Abstract Fire tests and subsequent bending tests of four reinforced concrete (RC) beams were performed. Based on these tests, the post-fire performance of RC beams was further studied using finite-element simulation through reasonable selection of suitable thermal and thermodynamic parameters of steel and concrete materials. A thermodynamic model of RC beams with three sides under fire was built using finite-element analysis (FEA) software ABAQUS. The FEA model was validated with the results of fire tests. Different factors were taken into account for further parametric studies in fire using the propsed FE model. The results show that the main factors affecting the fire resistance of the beams are the thickness of the concrete cover, reinforcement ratio of longitudinal steel, the fire exposure time and the fire exposure sides. Based on the strength reduction formula at high temperature of steel and concrete and four test results, an improved section method was proposed to develop a calculation formula to calculate the flexural capacity of RC beams after fire. The theoretical calculation method proposed in this paper shows good agreement with FEA results, which can be used to calculate the flexural capacity of RC beams after fire.

Comparison of Flange Stress Calculated by ASME Design Code and Finite Element Analysis

2007 ◽  
Author(s):  
Satoshi Nagata ◽  
Toshiyuki Sawa
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Calculation Method ◽  
Design Method ◽  
Actual Condition ◽  
Design Code ◽  
Element Analysis ◽  
Good Practices ◽  
Asme Code ◽  
The Difference

A flange strength calculation method for flange joints based on the researches carried out by Waters at el. is adopted in ASME B&PV Code and has been used with many good practices in several decades. However, it is also the fact that there are some cases like that the code calculation gives over conservative results or a leakage trouble occurs even if the calculation meets the code requirements. Discrepancy is pointed out between the calculation condition and the actual condition, too. This paper clarifies the difference of flange stresses calculated by ASME design code and finite element analysis. Furthermore, using the ASME Code formulas proposed by Waters with the bolt load and the gasket load obtained by finite element analysis, flange stresses are calculated and compared with the results of finite element analysis. Finally, the paper discusses the adequacy of flange stress calculation formulas and shows the point to be modified in ASME design method.

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