Six sigma analysis of underground shelter

Abstract

An underground shelter is designed, developed and tested for dynamic pressure arising due to blast and static load due to earth pressure. The shelter is designed using closed form given in standard and also analysed using finite element method software package. However, in these methods, fixed values of input parameters are taken and output parameters are also having fixed values. Hence, Six Sigma Analysis [or Design for Six Sigma (DFSS)] is used to take account of uncertainties in input variables. The basic parameters, various distribution functions, procedure for using software package for six sigma analysis, uncertain input parameters and their ranges and results obtained from the Six Sigma Analysis are discussed in this paper. A comparison between experimental results with deterministic and Six Sigma analyses is also given in the paper.