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• W4200240147 abstract "The accuracy of transmission tower-line system simulation is highly impacted by the transmission line model and its coupling with the tower. Owing to the high geometry nonlinearity of the transmission line and the complexity of the wind loading, such analysis is often conducted in the commercial software. In most commercial software packages, nonlinear truss element is used for cable modeling, whereas the initial strain condition of the nonlinear truss under gravity loading is not directly available. Elastic catenary element establishes an analytical formulation for cable structure under distributed loading; however, the nonlinear iteration to reach convergence can be computational expensive. To derive an optimal transmission tower-line model solution with high fidelity and computational efficiency, an open-source three-dimensional model is developed. Nonlinear truss element and elastic catenary element are considered in the model development. The results of the study imply that both elements are suitable for the transmission line model; nevertheless, the initial strain in nonlinear truss element largely impacts the model accuracy and should be calibrated from the elastic catenary model. To cross-validate the developed models on the coupled transmission tower and line, a one-span eight-line system is modeled with different elements and compared with several state-of-the-art commercial packages. The results indicate that the displacement time-history root-mean-square error (RMSE) of the open-source transmission tower-line model is less than <math xmlns=http://www.w3.org/1998/Math/MathML id=M1> <mn>1</mn> <mo>%</mo> </math> and with a <math xmlns=http://www.w3.org/1998/Math/MathML id=M2> <mn>66</mn> <mo>%</mo> </math> computational time reduction compared with the ANSYS model. The application of the open-source package transmission tower-line model on extreme wind speed considering the aerodynamic damping is further implemented." @default.
• W4200240147 created "2021-12-31" @default.
• W4200240147 creator A5015846787 @default.
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• W4200240147 date "2021-12-20" @default.
• W4200240147 modified "2023-10-10" @default.
• W4200240147 title "Investigation and Development of a Three-Dimensional Transmission Tower-Line System Model Using Nonlinear Truss and Elastic Catenary Elements for Wind Loading Dynamic Simulation" @default.
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• W4200240147 doi "https://doi.org/10.1155/2021/1959683" @default.
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