Structural system reliability under multiple failure modes
Abstract
This paper describes a computational method for system reliability estimation of propulsion structures. The failure domain of the entire structural system is computed through the union of failure regions for various critical system failure modes. The effect of non-critical progressive damage is incorporated through structural reanalysis, resulting in the construction of several linear segments to approximately cover the system failure domain. An adaptive damage imposition scheme is outlined for the sake of computational efficiency. The proposed method is used to construct the system survival cdf (cumulative distribution function) of a two-rotor system.
- Publication:
-
AIAA/ASME/ASCE/AHS/ASC 34th Structures, Structural Dynamics, and Materials Conference
- Pub Date:
- April 1993
- Bibcode:
- 1993ssdm.conf..707M
- Keywords:
-
- Cumulative Damage;
- Failure Modes;
- Probability Theory;
- Space Shuttle Main Engine;
- Structural Failure;
- Structural Reliability;
- Creep Rupture Strength;
- Distribution Functions;
- Fracture Mechanics;
- Structural Mechanics