Accession Number : ADP000076

Title :   Optimization of Multiple Safety Factors in Structural Designs,

Corporate Author : FAILURE ANALYSIS ASSOCIATES PALO ALTO CA

Personal Author(s) : Eason,E. D. ; Thomas,J. M. ; Besuner,P. M.

Report Date : 1981

Pagination or Media Count : 7

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 and/or proof tests. (Author)

Descriptors :   *Structural engineering, *Optimization, *Safety, *Numerical methods and procedures, *Structural mechanics, Structural analysis, Structural response, Structures, Weight reduction, Reliability, Test and evaluation, Cost effectiveness, Load distribution, Probability, Failure, Strength(General)

Distribution Statement : APPROVED FOR PUBLIC RELEASE