Newmark 法弓网仿真参数选择研究

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Abstract Research purposes: The coupling kinetic equations for the catenary － pantograph simulation can be built with the Second Lagrange Equation． These equations belong to the time varying system and their solutions can be obtained with the direct integration method or indirect integration method． When the Newmark integration method in the indirect integration method is used to choose the proper parameters，it belongs to an unconditional stability method and is often used in the catenary － pantograph simulation． Except the two parameters of Newmark method，the results of simulation also depend on the simulation＇s time interval and orders of the model． So the choice of these two parameters must be studied carefully．

Research conclusions: This paper studies the choice of the integral parameters at the different train speed with the Newmark method by building the simple catenary suspension mechanics model for the catenary and pantograph system． The result shows the simulation needs an vibration stabilization process when the model order is too low，and the result is satisfied when the model order is over 150． The time interval should be the half of the critical time interval for ensuring the simulation accuracy．

Key words： Netmark Integration Method catenary － pantograph simulation integral parameters

Received: 29 November 2012

PACS:

U225． 1

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	SU Guang － hui

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SU Guang － hui. Study on Choice of Parameters for Catenary － pantograph Simulation with Newmark Integration Method[J]. 铁道工程学报, 2013, 30(3): 77-81.

URL:

http://tdgcxb.crec.cn/EN/ OR http://tdgcxb.crec.cn/EN/Y2013/V30/I3/77

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