一、引言在天轮轮体设计中,现多将两轮辐间的轮缘弧段设想成简支梁或固定梁,并以钢丝绳破断力为载荷加以计算。也有将轮缘展开为连续直梁计算的,以及视轮辐和两轮辐间的轮缘弧段为直杆,用节点位移方程式求解的。这些计算方法与实际情况有较大的差异。由天轮体的结构得知,轮缘截面的惯性矩远较轮辐为大,多在10倍以上。因此天论体承受绳压时,轮缘变形其微,轮辐弯形较大。 I. INTRODUCTION In the design of the wheel body, the rim arc of two wheels is now mostly conceived as a simply supported or fixed beam, and the breaking force of the steel wire rope is calculated as the load. Also, the flange is developed as a continuous straight beam, and the flange arc between the spokes and the two spokes is regarded as a straight rod, which is solved by the node displacement equation. These calculation methods and the actual situation is quite different. According to the structure of the wheel body, the moment of inertia of the wheel rim section is much larger than the spokes, more than 10 times more. Therefore, when the heavenly bodies subject to rope pressure, the deformation of the rim of its micro, large spoke curved.