Title :
Mode analysis on the rail car of fire robot based on FEA
Author :
Shu Fang ; Shengpeng Liu ; Lei Zhang ; Zhenwei Zhang
Author_Institution :
Shanghai Fire Inst. of Minist. of Public Security, Shanghai, China
Abstract :
The rail car of fire robot, which is used for carrying the robot enter the rail tunnel, is a accessory with a bed type structure. In this paper, a mode analysis model of the rail car has been founded based on finite element analysis (FEA), and the vibration modes and corresponding natural frequencies have been obtained from the simulation. The impaction caused by the rail joint has simply as a periodic excitation, and the frequency of the excitation has calculated due to the contain speed. Compared the simulation results, the theoretically resonance frequency band has been avoided. And the tow points, which have the min sum of the displacements in each mode, were chosen as the best location of cable suspension positions, and the points bring the minimize deformation and vibration excitation to the rail car.
Keywords :
cables (mechanical); finite element analysis; mobile robots; suspensions (mechanical components); tunnels; vehicle dynamics; vibrations; FEA; cable suspension positions; finite element analysis; fire robots; mode analysis model; natural frequencies; periodic excitation; rail car; rail tunnels; resonance frequency band; vibration excitation; Analytical models; Computational modeling; FEA; best suspension point; mode analysis; rail car of fire robot; resonance;
Conference_Titel :
System Science, Engineering Design and Manufacturing Informatization (ICSEM), 2011 International Conference on
Conference_Location :
Guiyang
Print_ISBN :
978-1-4577-0247-1
DOI :
10.1109/ICSSEM.2011.6081241
