The moving mesh method for the dynamics of an axially moving beam subject to inner pressure
To study the dynamic characteristics of an axially moving beam subjected to inner pressure,the equations of motion are obtained via Lagrangian method and are discretized using the finite element method with moving mesh.The dynamic responses of the axially moving beam subjected to inner pressure are analyzed by Newmark-β time integration method.The results show that:the established finite element dynamic mesh model could effectively achieve the computation of the dynamic response of axially moving internal pressure beams.During the contraction movement of the axially moving internal pressure beam,the frequency of free end vibration will gradually increase.The cantilever length has a significant effect on the free end vibration frequency of the beam.At the same time,the structural vibration frequency increases with the increase of internal pressure.The finite element dynamic mesh model established in this paper could provide a new method for the dynamic study of axially moving internal pressure beams.
axially moving beammoving meshinner pressurefinite element method
NETL
NSTL
万方数据
