scholarly journals Prediction of Nonlinear Dynamic Impact Force History by Finite Element Method

2018 ◽  
Vol 11 (3) ◽  
pp. 50-55
Author(s):  
Harun Gokce ◽  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Nonlinear Dynamic ◽  
Impact Force ◽  
Dynamic Impact ◽  
Element Method

scholarly journals Determination of dynamic impact factor for continuous girder bridge due to vehicle braking force by finite element method and experimental

2017 ◽  
Vol 39 (2) ◽  
pp. 149-164
Author(s):  
Nguyen Xuan Toan ◽  
Tran Van Duc
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Impact Factors ◽  
Dynamic Impact ◽  
Bending Vibration ◽  
Continuous Girder Bridge ◽  
Reaction Forces ◽  
Girder Bridge ◽  
Dynamic Impact Factor ◽  
Element Method

In this study, the finite element method (FEM) is used to investigate the dynamic response of continuous girder bridge due to moving three-axle vehicle . Vertical reaction forces of axles that change with time make bending vibration of girder significantly  increase. The braking in the first span is able to create response in other spans. In addition, the dynamic impact factors are investigated by both FEM and experiment for Hoa Xuan bridge. The results of this study provide an improved understanding of the bridge dynamic behavior and can be used as additional references for bridge codes by practicing engineers.

Seismic Analysis and Redesign of the Center Row in Reactor Core

2014 ◽  
Vol 668-669 ◽  
pp. 244-247
Author(s):  
Mei Huang ◽  
Yuan Yuan Zhao ◽  
Zhao Yang Xing ◽  
Hao Yuan ◽  
Jian Nan Tang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Impact Force ◽  
Seismic Analysis ◽  
Reactor Core ◽  
Maximum Force ◽  
Seismic Load ◽  
Element Method

In this article, finite element method is used to analyze the properties of the reactor core under seismic load, and redesign the center assemblies to resist deformation and impact force. The result shows that the maximum force on the lug boss is decreased while the springs are applied.

Spectral-Domain Based Impact Force Identification for Rod Structures

2013 ◽  
Author(s):  
Pooya Ghaderi ◽  
Steven I. Rich ◽  
Andrew J. Dick
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Impact Force ◽  
Force Identification ◽  
Identification Method ◽  
Spectral Finite Element Method ◽  
Spectral Finite Element ◽  
Rod Structures ◽  
The Impact ◽  
Element Method

Indirect impact force identification has attracted researchers due to the simplicity of indirect methods for calculating the applied force during the impact incident. In this paper, an impact force identification method for rod structures is proposed. The proposed method uses the spectral finite element method. The spectral finite element method is a frequency-based finite element method that takes advantage of the benefits of spectral methods and the simplicity of the finite element method. Using the frequency domain method for impact force identification simplifies the calculations and allows for the identification of impact forces with high frequency content, including MHz and above. The impact force identification method uses the collected data of the response of a section of the structure and utilizes the spectral finite element model of the structure to calculate the impact force. The results of the numerical study display strong agreement between the simulated impact force and the identified force. The performance of the force identification method is verified by applying it to experimental data collected from an impacted rod structure.

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