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Dynamic Analysis of Catenary System Subjected to Moving Load (이동하중을 받는 일정장력이 작용하는 가선계의 동적해석)

  • Lee, Kyu-Ho;Cho, Yong-Hyun;Chung, Jin-Tai
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.35 no.1
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    • pp.99-106
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    • 2011
  • In this study, the dynamic contact of a catenary system is analyzed by using the finite element method. We derive the equations of motion for the catenary system by taking into consideration tension on the catenaries. After establishing the weak form, they are spatially discretized with beam elements. Then, we analytically calculated the wave propagation speed for a string, bar, beam, and the catenaries subjected to tension. Further, finite element computer program for contact dynamic analyses is developed. Finally, we analyze the wave propagation response corresponding to the moving load to the contact line are calculated.