Comments on “A new three-dimensional finite element analysis model of high-speed train–bridge interactions”

2004 ◽  
Vol 26 (9) ◽  
pp. 1319-1320 ◽  
Author(s):  
Ping Lou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Speed ◽  
Three Dimensional ◽  
High Speed Train ◽  
Analysis Model ◽  
Element Analysis ◽  
Finite Element Analysis Model ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

scholarly journals Three-dimensional finite element simulation of residual stresses in UIC60 rails during the quenching process

2017 ◽  
Vol 21 (3) ◽  
pp. 1301-1307 ◽  
Author(s):  
Nejad Masoudi ◽  
Mahmoud Shariati ◽  
Khalil Farhangdoost
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Residual Stresses ◽  
Initial Conditions ◽  
Three Dimensional ◽  
Analysis Model ◽  
Element Analysis ◽  
Quenching Process ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

The aim of this paper is to develop means to predict accurately the residual stresses due to quenching process of an UIC60 rail. A 3-D non-linear stress analysis model has been applied to estimate stress fields of an UIC60 rail in the quenching process. A cooling mechanism with water spray is simulated applying the elastic-plastic finite element analysis for the rail. The 3-D finite element analysis results of the studies presented in this paper are needed to describe the initial conditions for analyses of how the service conditions may act to change the as-manufactured stress field.

scholarly journals A Three-Dimensional Finite Element Analysis Model for SH-SAW Torque Sensors

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4290 ◽  
Author(s):  
Jiang ◽  
Chen ◽  
Cho
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Quartz Substrate ◽  
Three Dimensional ◽  
Wave Mode ◽  
Analysis Model ◽  
Element Analysis ◽  
Applied Torque ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element

In this paper, a three-dimensional finite element analysis (3D-FEA) model for shear horizontal surface acoustic wave (SH-SAW) torque sensors is presented. Torque sensors play a significant role in various fields to ensure a reliable torque transmission in drivelines. Featured with the advantages of high propagation velocity, large Q-value, and good power capacity, SH-SAW based torque sensors are promising but very few studies have been carried out. In order to develop a successful sensor, understanding the characteristics of SH-SAWs produced on piezoelectric substrates and torque sensing modes is indispensable. Therefore, in this study, we first investigated the effect on the generation of waves when different Y-cut quartz substrates are engaged. Thereafter, analyses and comparisons, regarding the effect on the polarized displacement, wave guidance, and wave mode, were conducted for different configurations of wave-guide layer thickness to wavelength ratios (hlayer/λ) and materials. Results show that Y-cut quartz at an angle close to 36° with a gold (Au) layer varying from hAu/λ = 0.02 to 0.03 thickness could be the most effective configuration for the excitation of SH-SAWs, compared to other combinations using platinum (Pt), titanium (Ti) and silicon dioxide (SiO2). Finally, based on the FEA SH-SAW torque sensor model configuring with a Y+36° quartz substrate and 0.025 λ-thick gold layer, the relationship between the applied torque and sensed voltage was examined, which shows a perfect linearity demonstrating the performance of the sensors.

A Finite Element Analysis on Mechanical Property of Externally Strengthened Prestressed Box Beams

2011 ◽  
Vol 187 ◽  
pp. 790-796
Author(s):  
Rong Xia Wang ◽  
Hong Jiang Li
Keyword(s):  
Mechanical Property ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Concrete Strength ◽  
Three Dimensional ◽  
Analysis Model ◽  
Element Analysis ◽  
Dimensional Finite Element ◽  
Box Beams ◽  
Three Dimensional Finite Element

The mechanical property of external prestressed beams is affected by many parameters. Based on experimental study on externally strengthened prestressed box beams, a three-dimensional finite element analysis model was built in ANSYS. The calculation results was proved to be correct by being compared with experimental results. The effect of some parameters on deflection and stress in externally strengthened box beam was deeply analyzed in serviceability stage and ultimate status. The study shows that different original status of strengthened beam may affect the deflection and stress in different degree. The parameters change, such as effective prestress, concrete strength, the area and depth of external tendons and displacement coupling character for contact node, will result in a little difference in deflection and stress in serviceability stage, but obvious in ultimate status. For box beams in the model, changing the tendons lateral distance to the web results in litlle change in deflection and stress. No matter it is inside or outside the box at cross section.

Finite Element Method Analysis for Marine Semi-Built-Up Crankshaft Shrinkage Fitting

2014 ◽  
Vol 472 ◽  
pp. 693-698
Author(s):  
Shou Qi Cao ◽  
Shu Man Fu ◽  
Ya Wen Zhu ◽  
Yan Ling Han
Keyword(s):  
Finite Element ◽  
Induction Heating ◽  
Three Dimensional ◽  
Deformation Condition ◽  
Analysis Model ◽  
Element Analysis ◽  
Finite Element Analysis Model ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Method Analysis

Based on the theories of induction heating and thermal conductivity, and by establishing a three-dimensional finite element analysis model including the induction coil, crank cheek and air, the pattern of temperatures field distribution and thermal deformation condition of the crank cheek during the period of induction heating were numerically simulated with software ANSYS. The simulation result showed that, by setting a circular coil inside the crank cheek, a uniform temperatures field around the hole would be obtained after a certain period of induction heating. As a result, the crankshaft would reach a high quality shrinkage fitting, manifesting the feasibility of the application of induction heating to the crankshaft shrinkage fitting.

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