Estimation the minimum safety coefficient with using the interpolation polynoms method

The algorithm allowing to connect the set level of reliability of a design with safety coefficient is given in article. The algorithm is stated methodically and is easily realized at the solution of practical tasks. At the solution of practical task on stress-strain state of interface of cylindrical shell with spherical bottom through the elastic bulkhead the method of interpolation polynoms was used. The minimum value of safety coefficient for the considered task is received. The analysis of influence of dispersion the parameters of behavior, properties of system and parameter of limit state on value of minimum safety coefficient is carried out. Ways of ensuring the set level of probability of failure-free operation are specified.