The Seal Reliability Analysis of Oring Seals（实现密封的密封可靠性分析）.pdf

The Seal Reliability Analysis of Oring Seals Faguo Sun, Tianxiang Yu, Weimin Cui Xiao Zong Aeronautics College of Northwestern Polytechnical Beijing Space Navigation System Engineering Research University Institute Xi’an, China Beijing, China sunfaguo@ zongxiao@ tianxiangyu@ weimincui@ II THE DERIVATION OF THE MAIN FAILURE MODE AND Abstract—First, the seal reliability function of the O-ring, that is FUNCTION OF O-RING SELECTING A TEMPLATE the maximum contact stress between O-ring and plunger must be The main role of O-ring is to prevent leakage of fluid, so greater than the fluid pressure, is established, then on the basis whether there is leakage or the O-ring breaks, the O-ring would of the nonlinear constitutive equation Mooney-Rivlin of rubber fail. As for the failure criteria of the O-ring, the most common material, the finite element model of the O-ring is built using failure criterion is that: the contact stress on the seal surface commercial software ABAQUS, according to the finite element model, the distribution fit