analytical geometry

Analytical solutions of thin plate with different boundaries under symplectic geometry form

辛几何形态下不同边界条件的薄板解析解

Based on the Mindlin plate theory, and by modifying the mixed variational principle, the Hamilton canonical equation for the free vibration analysis of Mindlin plate is derived and the analytical solution is also deduced by the adjoint ortho-organization symplectic geometry method.

本文通过对混合能变分原理的修正，建立了Mindlin板动力学问题的Hamilton正则方程，并采用共轭辛正交归一关系给出固有频率分析的精确解。

The teaching of plane analytical geometry is short of the suitable courseware resources in practice.

适合学校实际平面解析几何课堂教学的课件资源匮乏.

Based on the principles of space analytical geometry, methods for computing the coordinates of the center of cutting disc, its angle of depression and elevation, angle of lateral swing and angle of twist are derived.

根据空间解析几何原理，推导出盾构机刀盘中心三维坐标以及俯仰角、横摆角、扭转角的计算方法。