In order to demonstrate the feasibility of a repair method of bearing seat on a certain airplane starter and the rationality of the parameters adopted in repair-bushing interference fit structural, the reliability of repair-bushing interference fit has been studied. With the factors,which will induce repair-bushing looseness or bearing seat flaw, set as random variables, the reliability model has been established. The finite element calculation of repair-bushing interference fit has been accomplished base on ANSYS, and the finite element calculation results have been examined by experiment. According to the reliability model of repair-bushing interference fit and the results of finite element calculation, the reliability of repair-bushing interference fit was calculated. The calculation results and the practical applications show that the design of repair-bushing interference fit structural parameters is reasonable, and the repair method which is feasible and effective has a high reliability.%为论证某型飞机起动机轴承座修复方法的可行性和修复衬套过盈联接结构参数的合理性,对修复衬套过盈联接的可靠性进行研究.将导致修复衬套松动和轴承座胀裂的因素作为随机变量,建立修复衬套过盈联接的可靠度模型.基于 ANSYS 对修复衬套过盈联接进行了有限元计算.并对有限元计算结果进行了实验验证.根据修复衬套过盈联接的可靠度模型和有限元计算结果,计算得出修复衬套过盈联接的可靠度.计算结果和实际应用情况表明,修复衬套过盈联接结构参数设计合理,修复方法可行、有效,且具有高可靠性.
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