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...Introduction to finite element analysis fea or method fem the is a numerical for solving problems of engineering and mathematical physics useful with complicated geometries loadings material properties where analytical solutions can not be obtained purpose solution stress trusses beams other simple structures are carried out based on dramatic simplification andidealization massconcentrated at center gravity beamsimplifiedasalinesegment samecross section design calculation results idealized structure large safety factor given by experience geometry lot more complex accuracy requirement higher we need understand physical behaviors object strength heat transfer capability fluid flow etc predict performance behavior calculate margin identify weaknessofthedesignaccurately toidentify optimal confidence brief history grew aerospace industry post ww ii jets missiles space flight light weight required accurate paralleled growth computers...