Failure-based sealing reliability analysis considering dynamic interval and hybrid uncertainties

In the reliability analysis of a sealing structure, radial clearance contact surface is usually regarded as failure criterion, and sample size quite small, which brings great challenges to uncertainty quantification. Therefore, this paper proposes method based on leakage mechanism sealing. With application dynamic interval, proposed can be used deal with problem degradation in small evaluate reliability. Moreover, mixture probabilistic non-probabilistic variables obtained using method. An illustrative numerical case study spool valve conducted order validate implemented sensitivity analysis. The help evaluating predicting hybrid uncertainties.