The Use of Finite Element Method in Computing the Dynamic Pressure inside a Fuel Tank and Simulation of Fuel System Pipe Cut During Vehicle Crash to Predict Fuel Leakage

1997 ◽  
Author(s):  
Miloslav Riesner ◽  
Peyman Aghssa ◽  
Francis Arnaudeau ◽  
Gerard Winkelmuller
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Pressure ◽  
Fuel Tank ◽  
Fuel System ◽  
Vehicle Crash ◽  
Fuel Leakage ◽  
Element Method

scholarly journals Analysis of Spiral-Grooved Gas Journal Bearings by the Narrow-Groove Theory and the Finite Element Method At Large Eccentricities

2020 ◽  
Vol 142 (4) ◽  
Author(s):  
Elia Iseli ◽  
Eliott Guenat ◽  
Roger Tresch ◽  
Jürg Schiffmann
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Dynamic Pressure ◽  
Journal Bearings ◽  
The Finite Element Method ◽  
Pressure Profiles ◽  
Stability Maps ◽  
Time Periodic ◽  
Good Agreement ◽  
Element Method

Abstract A finite groove approach (FGA), based on the finite element method (FEM), is used for analyzing the static and dynamic behavior of spiral-grooved aerodynamic journal bearings at different eccentricities, number of grooves, and compressibility numbers. The results of the FGA are compared with the narrow-groove theory (NGT) solutions. For the rotating-groove case, a novel time-periodic solution method is presented for computing the quasi-steady-state and dynamic pressure profiles. The new method offers the advantage of avoiding time-consuming transient integration, while resolving a finite number of grooves. The static and dynamic solutions of the NGT and FGA approach are compared, and they show good agreement, even at large eccentricities (ε=0.8) and high compressibility numbers (Λ = 40). Stability maps at different eccentricities are presented. At certain operation points, a stability decrease toward larger eccentricities is observed. The largest stability deviations of the NGT from the FGA solutions occur at large groove angle, low number of grooves, and large compressibility numbers.

Dynamic Fracture Behavior of 316L Brazed Joint: Study With Experimental and Finite Element Methods

2018 ◽  
Author(s):  
Weiya Zhang ◽  
Wenchun Jiang ◽  
Bin Yang ◽  
Ming Song ◽  
Xiangnan Zhai
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Strain Rate ◽  
Dynamic Fracture ◽  
Fracture Behavior ◽  
Dynamic Pressure ◽  
Brazed Joints ◽  
Brazed Joint ◽  
Axial Fracture ◽  
Element Method

Brazed joints are widely used in the plate fin structures, and it is very important to ensure the strength under dynamic pressure. This paper investigated the dynamic fracture mechanism of 316L brazed joints using experimental and finite element method. Results show that the yield strength, tensile strength and elongation of the brazed joint are closely related with the strain rate. Using the finite element method, the strain rate sensitive model (Johnson-Cook) is built, and the brazed joint shows a multi-axial fracture mode. Meanwhile, the brazed residual stress and filler metal thickness affect the dynamic fracture behavior of the brazed joint.

Simulation of tuning graphene plasmonic behaviors by ferroelectric domains for self-driven infrared photodetector applications

Nanoscale ◽  
2019 ◽  
Vol 11 (43) ◽  
pp. 20868-20875 ◽  
Author(s):  
Junxiong Guo ◽  
Yu Liu ◽  
Yuan Lin ◽  
Yu Tian ◽  
Jinxing Zhang ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Interfacial Effect ◽  
Infrared Photodetector ◽  
The Finite Element Method ◽  
Ferroelectric Domains ◽  
Element Method

We propose a graphene plasmonic infrared photodetector tuned by ferroelectric domains and investigate the interfacial effect using the finite element method.

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