论文部分内容阅读
车身骨架是由大量梁类结构单元构成的.除了这些梁的截面形状和尺寸外,边界条件也对系统刚度影响很大.讨论了各种边界条件和载荷模式下的梁系统的合成刚度.基于两端固支的均匀截面梁的弯曲和扭转刚度,研究了各联结刚度的大小对系统刚度的贡献,并绘制了相应的影响曲线.最后,通过上述解析公式和有限元法计算了某汽车仪表板横梁系统的实际弯曲和扭转刚度.文中获得的静态刚度公式对其它梁类结构也适用。
In addition to the cross-sectional shape and size of these beams, the boundary conditions also have a great influence on the system stiffness.The synthetic stiffness of the beam system under various boundary conditions and load modes is discussed.Furthermore, The bending and torsional stiffness of the uniform cross-section beams with both ends fixed at each end are studied, and the contribution of the stiffness of each coupling stiffness to the system stiffness is studied and the corresponding influence curve is drawn.Finally, through the above analytical formula and the finite element method, The actual bending and torsional stiffness of the slab system The static stiffness equations obtained in this paper also apply to other beam structures.