Torsional Rigidity Analysis of Long Cantilever Structure on Bridge Based on Model Test and Finite Element Method

ICLEM 2012 ◽  
2012 ◽  
Author(s):  
Dali Zhang ◽  
Hong Duan ◽  
Lei Yang ◽  
Dejun Liu ◽  
Xiaozhen Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Model Test ◽  
Torsional Rigidity ◽  
Rigidity Analysis ◽  
Cantilever Structure ◽  
Element Method

scholarly journals Calculation of the Torsional Rigidity of Strain-Wave Gearing by Finite Element Method.

1993 ◽  
Vol 59 (563) ◽  
pp. 2239-2244
Author(s):  
Nobuyuki Sugimoto ◽  
Takeshi Ishida ◽  
Teruaki Hidaka ◽  
Masakatsu Sasahara ◽  
Yoshihiro Tanioka
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Torsional Rigidity ◽  
Strain Wave ◽  
Element Method

scholarly journals The oscillating and electrostatic characteristics of microelectromechanical system cantilever structure analyzed based on the air gap domain

2018 ◽  
Vol 37 (4) ◽  
pp. 725-747 ◽  
Author(s):  
Jianlian Cheng ◽  
Kai Li ◽  
Zhuang Zhang ◽  
Yufeng Gu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Study ◽  
Damping Ratio ◽  
Electrostatic Actuation ◽  
Compact Model ◽  
Squeeze Film ◽  
The Finite Element Method ◽  
Cantilever Structure ◽  
Element Method

Extensive modeling and simulation of the damping phenomenon, electrostatic actuation, and structural vibration analysis are performed. The governing partial differential equations of cantilever plate are obtained, and the resonant frequencies are calculated from the equilibrium equations. The damping forces of squeeze film are analyzed by obtaining the damping ratio and spring constant. Electrostatic actuation is applied to oscillate the cantilever to ensure that the displacement of the plate is above the thermal noise floor. Electrostatic actuating forces, displacement, and capacitance are calculated both numerically and analytically from the Poisson’s equations. Squeeze film damping effects naturally occur if structures are subjected to loading situations such that a very thin film of fluid is trapped within structural joints, interfaces, etc. An accurate estimate of squeeze film effects is important to predict the performance of dynamic structures. Squeeze film effects are simulated by the finite element method. The accuracy of the compact model is studied by comparing its response to the numerical results calculated with the finite element method. The agreement is very good in a wide frequency band. The numerical study and the compact model are directly applicable in predicting the damping force and damping factors of squeeze film.

VERIFICATION OF SIGNAL POLE SHAFT FOUNDATION LRFD DESIGN USING FINITE ELEMENT METHOD

2019 ◽  
Vol 6 (1) ◽  
Author(s):  
Kuang-Yuan Hou ◽  
Chung C. Fu ◽  
Yunchao Ye ◽  
Chaoran Xu
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Analytical Method ◽  
Soil Conditions ◽  
Finite Element Models ◽  
Foundation Design ◽  
Verification Methods ◽  
Cantilever Structure ◽  
Embedment Length ◽  
Element Method

This study presents verification methods of current shaft foundation design under linear lateral and torsional loads. Shaft is used as a foundation to support mast arm signal pole structure and transfer loads from superstructures to ground. The capacity of current shaft foundation deployed in the State of Maryland is re-verified due to higher sub-structural strength requirement against super-structural fatigue proposed from the AASHTO LRFD Specification (2015). The shaft foundation verification includes embedment length and torsional capacity. For embedment length check, lateral reactions between soil and shaft are verified by comparing analytical method and finite element method. Wind-induced torque is a design concern for the shaft of a single pole cantilever structure. However, torsional capacity of the shaft foundation of signal pole structures is rarely mentioned in the current design specification. By verifying finite element models with analytical method, torsional effect is further simulated to finite element models to evaluate the adequacy of current shaft foundation design. Results show existing design of shaft foundation could meet requirements to resist lateral force under extreme conditions. For torsional effect, current torsional capacity is less than the torque induced by wind load in the worst soil conditions.

Study on the Gradually Expanding Substructure Method for the PBL Shear Connector Group

2012 ◽  
Vol 204-208 ◽  
pp. 2148-2152
Author(s):  
Yu Zhi Zhang ◽  
Qiao Li ◽  
Yi Zhi Bu ◽  
Lei Zhao
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Model Test ◽  
Simple Structure ◽  
Test Method ◽  
Shear Connector ◽  
The Finite Element Method ◽  
Substructure Method ◽  
Simple Boundary ◽  
Element Method

Finite element method and model test method are not applicable to analyze the mechanism of PBL shear connector group which is large and complex, because modeling is complicated, efficiency is low and calculation is difficult to converge for the finite element method, and the model test cost too much money and time. In order to improve the analysis ability for the PBL group, the gradually expanding substructure method was put forward for the PBL group transmitting axial load according to the simple boundary conditions and the repeated simple structure components. The gradually expanding substructure method was derived based on the load-slip curve of the single PBL shear connector and the force and displacement equations of the steel and concrete components. Compared with finite element method, the gradually expanding substructure method has some advantages such as the equations are easier to understand, the program is easier to perform and the efficiency is higher.

scholarly journals Analisis Torsional Rigidity dan Uji Tabrak pada Chassis Go-kart Tonykart menggunakan Finite Element Method

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Benedictus Bayu Bagaskoro ◽  
Julendra Bambang Ariatedja ◽  
Julendra Bambang Ariatedja
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Torsional Rigidity ◽  
Element Method

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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