火箭发动机法兰连接结构的受力与变形分析

法兰连接结构在火箭发动机上得到了大量应用，但由于其结构的非线性和静不定性，给精确的应力一应变分析带来了很大的困难。文中分别在预紧和操作情况下，应用弹性理论对火箭发动机法兰连接结构进行了较为详细的载荷一变形分析。算例的计算结果表明，考虑法兰环旋转时更能反映火箭发动机法兰连接结构的真实受力情况。

Load-deformation Analysis of O-ring Flanged Connection System for Rocket Motor

The O-ring flanged connection system is widely used in rocket motor due to convenience of transportation, installation, examination, repair and components replacement or the need of production techniques. Because of the structural complexity of the O-ring flanged connection system and obvious nonlinear of the load-deformation curve of O-ring gasket, so there a lot of difficulties in accurate stress-strain analysis of the O-ring flanged connection system. The load deformation of O-ring flanged connection system for rocket motor was analyzed in the ease of clamping and operating with elasticity theory. The result of the example indicates that true load of the O-ring flanged system will be reflected while the rotation of flange ring is considered.