ANALYSIS OF DYNAMIC RESPONSES OF SHALLOW ARCHS WITH FLEXIBLE SUPPORTS SUBJECTED TO BLAST LOADS

【Author】

Chunming Song~*,Engineering Institute of PLA University of Science and Technology,China Mingyang Wang,Engineering Institute of PLA University of Science and Technology,China Rui Zhu,Engineering Institute of Air Force Engineering University,China

【Abstract】

<正>Rigid supports,such as the clamped and simply supports,are used rarely at the ends of arch in the engineering practice,but flexible supports,such as elastic supports and damping supports,are used often.In the present paper the mechanical model of arch with flexible supports is built with the elastic and damping supports and lumped masses at the ends of arch being considered.Based on large deformation dynamic differential equations and finite difference method,the elastic-plastic dynamic responses of arch subjected to blast loads are studied.The analysis shows that flexile supports have great effects on the performances of arch.Vertical elastic supports can reduce the peak forces of arch under blast loads with short duration, and postpone the time of peak,and the vertical damping supports lower the internal forces and displacements.Therefore,the resistance of arch can be improved by flexible supports.

【Keywords】

arch;;flexible support;;elastic support;;blast loading;;dynamic response

References

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Total: 9 articles

  • [1] FANG Qin DU Maolin (PLA University of Science and Technology, Nanjing 210007, China), DYNAMIC RESPONSES OF AN ELASTICALLY SUPPORTED BEAMS WITH DAMPING SUBJECTED TO BLAST LOADS, Mechanics in Engineering,
  • [2] JIANG Zhigang(Engineer College of Changsha, Changsha410003, China), ANALYSIS OF INTERNAL FORCES IN CURVED BEAM WITH SPRING, MECHANICS AND ENGINEERING,
  • [3] Ye LH,;Zeng S Y;Chen B, The dynamic responses of an elastic supported beam, Engineering Mechanics, Journal of Engineering Mechanics ASCE (Journal of Engineering Mechanics ASCE)
  • [4] Zhu HJ;Luo E, A new method for the analysis of dynamic responses of rigid and elastic support beams, Proceedings of National Symposium on Vibration.(Diagnosis,Mode,Noise,and Structural Dynamics) Engineering and Application,

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