Accession Number:

ADA513131

Title:

On Buffered Failure Probability in Design and Optimization of Structures

Descriptive Note:

Corporate Author:

WASHINGTON UNIV SEATTLE DEPT OF MATHEMATICS

Personal Author(s):

Report Date:

2009-12-18

Pagination or Media Count:

40.0

Abstract:

In reliability engineering focused on the design and optimization of structures, the typical measure of reliability is the probability of failure of the structure or its individual components relative to specific limit states. However, the failure probability has troublesome properties that raise several theoretical, practical, and computational issues. This paper explains the seriousness of these issues in the context of design optimization and goes on to propose a new alternative measure, the buffered failure probability, which offers significant advantages. The buffered failure probability is handled with relative ease in design optimization problems, accounts for the degree of violation of a performance threshold, and is more conservative than the failure probability. Keywords Failure probability Structural Reliability Reliability-based design optimization.

Subject Categories:

  • Structural Engineering and Building Technology

Distribution Statement:

APPROVED FOR PUBLIC RELEASE