Numerical Model and Dynamic Characteristics Analysis of Cable-Stayed Bridge

2020 ◽  
pp. 55-72
Author(s):  
Antara Banerjee ◽  
Atanu Kumar Dutta
Keyword(s):  
Numerical Model ◽  
Dynamic Characteristics ◽  
Cable Stayed Bridge ◽  
Characteristics Analysis ◽  
Dynamic Characteristics Analysis

Finite Element Modal Analysis of the Cable-Stayed Bridge

2013 ◽  
Vol 438-439 ◽  
pp. 883-885
Author(s):  
Ji Lin Wu ◽  
Chun Cao Song
Keyword(s):  
Finite Element ◽  
Natural Frequency ◽  
Dynamic Characteristics ◽  
Natural Vibration ◽  
Vibration Mode ◽  
Beam Elements ◽  
Cable Stayed Bridge ◽  
Characteristics Analysis ◽  
Natural Vibration Mode ◽  
Dynamic Characteristics Analysis

In the process of modeling, ignoring the displacement of the pier directly replaced with fixed constraint, beam elements were adopted to simulate girder and pylon, and link elements were adopted to simulate the cable. The first ten order natural vibration mode and natural frequency were obtained, and the dynamic characteristics analysis of a single pylon cable-stayed bridge was discussed, which can provide certain reference and guidance for solving the problem of the cable-stayed bridge design.

Dynamic Characteristics Analysis of Cable-Rib Tension Deployable Antenna

2016 ◽  
Author(s):  
Liu Ruiwei ◽  
Hongwei Guo ◽  
Zhang Qinghua ◽  
Rongqiang Liu ◽  
Tang Dewei
Keyword(s):  
Dynamic Characteristics ◽  
Structural Parameters ◽  
Element Model ◽  
Structure Design ◽  
Antenna Structure ◽  
Characteristics Analysis ◽  
New Type ◽  
Dynamic Characteristics Analysis ◽  
The Finite Element Model ◽  
Weight Dynamic

Balancing stiffness and weight is of substantial importance for antenna structure design. Conventional fold-rib antennas need sufficient weight to meet stiffness requirements. To address this issue, this paper proposes a new type of cable-rib tension deployable antenna that consists of six radial rib deployment mechanisms, numerous tensioned cables, and a mesh reflective surface. The primary innovation of this study is the application of numerous tensioned cables instead of metal materials to enhance the stiffness of the entire antenna while ensuring relatively less weight. Dynamic characteristics were analyzed to optimize the weight and stiffness of the antenna with the finite element model by subspace method. The first six orders of natural frequencies and corresponding vibration modes of the antenna structure are obtained. In addition, the effects of structural parameters on natural frequency are studied, and a method to improve the rigidity of the deployable antenna structure is proposed.

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