Finite element analysis of failure process for tubular joints in fire by using transient and steady heat transfer methods

For large scale multiplanar tubular joints used in practical engineering, the brace/chord intersection is a critical position as failure usually occurs here due to the weak bearing capacity of the chord in radius direction compared to the strength of the braces in axial direction. To improve the ultimate strength, different reinforcements can be used to strengthen the structures. Inner plate reinforcement is a relatively new strengthening method compared to conventional reinforcing methods. As there is no corresponding guideline which can be used for the design of inner plate reinforcing joints, it is necessary to investigate the failure mechanism of such tubular structures. Both experimental test and finite element analysis are carried out in this study to investigate the static behaviour of multiplanar tubular joint reinforced with inner plate. In the experimental work, the stresses distribution and development of the specimen is monitored, and the failure mode is observed. From the experimental results, both the failure process of the multiplanar tubular joint and the reinforcing efficiency of the inner plate were analyzed. Using finite element analysis, the failure process of the specimen is also analyzed step by step. The finite element results agree reasonably well with experimental measurements.

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Tire Bead Overheating in Urban Buses and Trucks Using Drum Brake Systems

Tire Science and Technology ◽

10.2346/1.2135959 ◽

1998 ◽

Vol 26 (1) ◽

pp. 51-62

Author(s):

A. L. A. Costa ◽

M. Natalini ◽

M. F. Inglese ◽

O. A. M. Xavier

Keyword(s):

Heat Transfer ◽

Finite Element Analysis ◽

Finite Element ◽

Thermal Energy ◽

Structural Integrity ◽

Experimental Temperature ◽

Temperature Profiles ◽

Element Analysis ◽

Drum Brake ◽

Fea Model

Abstract Because the structural integrity of brake systems and tires can be related to the temperature, this work proposes a transient heat transfer finite element analysis (FEA) model to study the overheating in drum brake systems used in trucks and urban buses. To understand the mechanics of overheating, some constructive variants have been modeled regarding the assemblage: brake, rims, and tires. The model simultaneously studies the thermal energy generated by brakes and tires and how the heat is transferred and dissipated by conduction, convection, and radiation. The simulated FEA data and the experimental temperature profiles measured with thermocouples have been compared giving good correlation.

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EFFECT OF AN OBSTRUCTION ON NATURAL CONVECTION HEAT TRANSFER IN VERTICAL CHANNELS—A FINITE ELEMENT ANALYSIS

International Journal of Numerical Methods for Heat &amp Fluid Flow ◽

10.1108/eb017531 ◽

1993 ◽

Vol 3 (3) ◽

pp. 267-276 ◽

Cited By ~ 2

Author(s):

R.K. SAHOO ◽

A. SARKAR ◽

V.M.K. SASTRI

Keyword(s):

Heat Transfer ◽

Finite Element Analysis ◽

Finite Element ◽

Natural Convection ◽

Convection Heat Transfer ◽

Natural Convection Heat Transfer ◽

Convection Heat ◽

Element Analysis

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Experimental Platforms and Finite Element Analysis on Hot Stamping Processes

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1063.334 ◽

2014 ◽

Vol 1063 ◽

pp. 334-338 ◽

Cited By ~ 1

Author(s):

Tzu Hao Hung ◽

Heng Kuang Tsai ◽

Fuh Kuo Chen ◽

Ping Kun Lee

Keyword(s):

Heat Transfer ◽

Finite Element Analysis ◽

Finite Element ◽

Process Design ◽

Hot Stamping ◽

Boron Steel ◽

Transfer Coefficients ◽

Element Analysis ◽

Heat Transfer Coefficients ◽

The Finite Element Analysis

Due to the complexity of hot stamping mechanism, including the coupling of material formability, thermal interaction and metallurgical microstructure, it makes the process design more difficult even with the aid of the finite element analysis. In the present study, the experimental platforms were developed to measure and derive the friction and heat transfer coefficients, respectively. The experiments at various elevated temperatures and contact pressures were conducted and the friction coefficients and heat transfer coefficients were obtained. A finite element model was also established with the experimental data and the material properties of the boron steel calculated from the JMatPro software. The finite element simulations for the hot stamping forming of an automotive door beam, including transportation analysis, hot forming analysis and die quenching analysis were then performed to examine the forming properties of the door beam. The validation of the finite element results by the production part confirms the efficiency and accuracy of the developed experimental platforms and the finite element analysis for the process design of hot stamping.

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