| || Analytical and Experimental Evaluation of a Buried Shelter
Author : Gautam, Chetan Kumar
Source : Defence Science Journal ; Vol:57(2) ; 2007 ; pp 299-307
Subject : 622 Civil Engineering
Keywords : Buried shelter;Soil-structure interaction;Elastic foundation stiffness;Modulus of subgrade reaction;Buckling analysis
Abstract : The design, analysis, and testing of a buried circular cylindrical shelter has been described in this paper. This shelter may be used for personnel protection in emergency situations like accidental blast, terrorist attack, etc. Various criteria have been used for designing and analysing the shelter. The shelter has been analysed using a software package called ANSYS for finding out the stresses, deflections, buckling load factors, and buckled mode shapes. The shelter was buried under earthcover (1.5 m) and tested for the required loading.
| || Prioritising Emergency Bridgeworks Assessment under Military Consideration using an Enhanced Fuzzy Weighted Average Approach
Author : Hung, Kuo-Chen;Tuan, Han-Wen
Source : Defence Science Journal ; Vol:60(4) ; 2010 ; pp 451-461
Subject : 622 Civil Engineering;Defence Science Journal
Keywords : Fuzzy weighted average;fuzzy multi-criteria decision making (FMCDM);bridgeworks assessment;military circumstance
Abstract : Prioritising emergency bridgeworks assessment has been a key to winning battles in combat circumstances because of soldier safety, attack or defence tactics, and logistic supply ability. However, an imprecise or vague satisfaction level of importance of criteria may also affect the prioritising evaluation of bridgeworks under military consideration. In this paper, the fuzzy set theory is employed to treat this aspect. With linguistic variables, fuzzy numbers and an enhanced fuzzy weighted average approach will be used. The proposed approach is used to investigate an example to illustrate its applications in emergency bridgeworks assessment. The approach is shown to be useful and effective. In order to make computing and ranking results easier and to increase recruiting productivity, a computer-based decision support system has been developed, which may help the commander make decisions more efficiently.