【摘要】 受弯薄板的基本方程,主要是挠曲微分方程和内力方程。指出目前许多文献中普遍存在的基本方程坐标变换时的概念错误,并以数学的等参变换为基础,利用内力的平衡关系,实现直角坐标下内力方程到极坐标下内力方程的变换,圆满完成基本方程的过渡。反过来,同样可以从极坐标下内力方程严密并方便地变换到直角坐标下。更多还原

【Abstract】 The basic equation of bending plate includes bending differential equation and internalforce equations.There is a conceptual confusion in basic equation coordinate transformation in many literatures.In order to transform internalforce equations from rectangular coordinate to polar coordinate,based on mathematical transformation and using the balance of the internalforce.So the transition of basic equation accomplished.On the contrary,we can transform internalforce equations from polar coordinate to rectangular coordinate expediently and rigorously.更多还原