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Showing papers in "Journal of Applied Mechanics in 1968"




Journal ArticleDOI
E. H. Lee1
TL;DR: In this paper, the authors generalize a previous theory to permit arbitrary deformation histories by considering two coupled thermodynamic systems: one comprising thermo- elasticity at finite strain and the other the irreversible process of dissipation and absorption of plastic work.
Abstract: : In some circumstances, elastic-plastic deformation occurs in which both components of strain are finite. Such situations fall outside the scope of classical plasticity theory which assumes either infinitesimal strains or plastic-rigid theory for large strains. The present theory modifies the kinematics to include finite elastic and plastic strain components. For situations requiring this generalization, dilatational influences are usually significant including thermo-mechanical coupling. This is introduced through the consideration of two coupled thermodynamic systems: one comprising thermo- elasticity at finite strain and the other the irreversible process of dissipation and absorption of plastic work. The present paper generalizes a previous theory to permit arbitrary deformation histories.

2,378 citations



Journal ArticleDOI
TL;DR: Optimal sandwich structure design for stiffness, natural frequency, buckling load and safety through plasticity is discussed in this paper, where the optimal sandwich structure is optimized for stiffness and natural frequency.
Abstract: Optimal sandwich structure design for stiffness, natural frequency, buckling load and safety through plasticity

303 citations



Journal ArticleDOI
TL;DR: In this paper, nonlinear membrane shell theory and small perturbations of pressurized membrane shells are discussed, and bending, buckling and vibration of stressed shells are observed in the case of stressed membrane shells.
Abstract: Nonlinear membrane shell theory and small perturbations of pressurized membrane shells, noting bending, buckling and vibration of stressed shells

225 citations








Journal ArticleDOI
E. F. Infante1
TL;DR: Linear nonautonomous random system stability, presenting theorem, two corollaries and second order examples as mentioned in this paper, and showing that linear non-autonomous system stability can be maintained.
Abstract: Linear nonautonomous random system stability, presenting theorem, two corollaries and second order examples

Journal ArticleDOI
TL;DR: Buckling and initial postbuckling behavior of thin elastic cylindrical shells of elliptical cross section as discussed by the authors, where the shells are made from elastic cylinders with an ellipse.
Abstract: Buckling and initial postbuckling behavior of thin elastic cylindrical shells of elliptical cross section













Journal ArticleDOI
TL;DR: In this article, the authors studied the instantaneous energy dissipation rate and load deflection of lap joints under uniform clamping pressure and showed that lap joints can be easily deflected under uniform pressure.
Abstract: Instantaneous energy dissipation rate and load deflection of lap joints under uniform clamping pressure