U形膨胀节试验研究

波纹管膨胀节是一种性能优异的位移补偿元件，尤其是U形膨胀节，在石油化工、动力、船舶、航空等部门均有广泛应用。这里对单层U型膨胀节进行了试验研究，得出了在内压、轴向位移以及联合工况作用下的应力分布曲线，验证了联合工况下应力的叠加性。试验结果表明，联合工况是最危险的工况。

Experiments and researches on single-layer U-shaped expansion join

Bellows expansion joint is a kind of very good device which can provide the deflection compensations,especially U -shaped expansion joint,they have been widely used in petrol chemical engineering,power,shipping and aero etc.departments.Experiments and researches on single-layer U -shaped expansion joint are made in this paper,the stress distributing charts of expansion joint under internal pressure,axial deflection and combinational acting are give.The superimposing performance of stress under combinational acting condition is researched.The result of test told us that combinational acting condition is the worst condition.