Buckling of Shells-Pitfall for Designers

摘要: Purpose I order to produce efficient, reliable designs and avoid unexpected catastrophic failure of structures which thin shells are important components, the engineer must understand physics shell buckling. The objective this survey is convey reader a "feel" for buckling, whether it be due nonlinear collapse, bifurcation or combination these modes. This intuitive understanding instability communicated by large number examples involving practical may stiffened, segmented, branched have complex wall constructions. With such knowledge will an improved ability foresee situations in buckling might occur modify design it. He able set up more appropriate models tests analytical predictions. emphasis here not on development equations prediction instability. For material referred book Brush Almroth. n Emphasis given behavior caused deflections plasticity. Also illustrated stress redistribution effects, stiffener loadpath eccentricity local vs general instability, imperfection sensitivity, modal interaction optimized structures. Scattered throughout text tips modeling computerized analysis. divided into nine major sections describing: 1) several expensive structures; 2) basics behavior; 3) "classical" sensitivity; 4) collapse appropriateness linear analyses shells; 5) with significant prebuckling 6) effects boundary conditions, load eccentricity, transverse shear deformation, stable postbuckling 7) optimization buckling-critical consequent interaction; 8) suggested method axially compressed cylinders stiffeners, internal pressure, other special characteristics; 9) two sophisticated required derive designs. paper focuses static problems.