Accession Number:

ADP000076

Title:

Optimization of Multiple Safety Factors in Structural Designs,

Descriptive Note:

Corporate Author:

FAILURE ANALYSIS ASSOCIATES PALO ALTO CA

Personal Author(s):

Report Date:

1981-01-01

Pagination or Media Count:

7.0

Abstract:

This paper presents a method for optimization of safety factors and testing procedures to simultaneously minimize weight and maintain acceptable reliability and testing costs. A load combination rule for two categories of load with different safety factors is analyzed by structural reliability methods to estimate the probability of failure as a function of the two safety factors. As a part of this analysis, a procedure is developed for modifying published strength distributions to reflect a successful test to a specified fraction of design ultimate load. A cost model is constructed including the expected cost of failure, the value of saving weight, and the cost of development andor proof tests. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE