基于三维有限元的箱梁腹板剪力分配规律分析

针对单箱多室箱梁在不同支承条件、腹板数量以及腹板厚度条件下的腹板剪力分配规律问题,提出了采用Midas/FEA对单箱多室箱梁进行数值模拟的方法,提取箱梁各道腹板的剪力值并进行对比分析,得到单箱多室箱梁各道腹板所分担剪力并非均分的结果.分析结果表明:当支承条件为双支座时,剪力增大系数最大;当腹板较少时,边腹板与中腹板剪力增大系数差别较小,边腹板的剪力增大系数随腹板数量增加而增大;腹板厚度变化对剪力分配影响不大.

Distribution law analysis of shear force in box-girder webs based on 3D finite element

A magnon-phonon interaction model was built in two-dimensional triangular insulating ferromagnet. By using Matsubara Green function theory, we studied the magonon spectrum, and calculated the magnon dispersion curve on the A line in the Brillouin Zone for different prameters in the system. It is concluded that at the boundary of Brillouin Zone there is a strong broadening in the magnon linewidth and softening of the magonon spectrum.The influences of longitudinal phonon and transverse phonon on the softening of the magonon spectrum and broadening in the magnon linewidth were compared. Influences of the parameters on the afore-mentioned softening and broadening phenomena were also illustrated.