如前文所述用有限元法对纤维缠绕压力容器中的应变分布作线性分析,在压力初始阶段能说明实验结果,但发现随内压的增加,在封头某些部位实验压力与应变关系曲线是非线性关系,这似乎是由于封头形状改变所引起的。据此,在本文中采用修正载荷增量法,按几何大挠度问题来处理纤维缠绕压力容器的应力 The linear distribution of strain in the filament wound pressure vessel was analyzed by the finite element method as described above. The experimental results were shown in the initial stage of the pressure. However, it was found that with the increase of the internal pressure, the experimental pressure and strain curves in some parts of the head It is non-linear, which seems to be due to the change of the shape of the head. Accordingly, in this paper, the revised load increment method, according to the problem of geometric deflection to deal with the pressure of fiber wound pressure vessel