Numerical investigation of thermoviscoelasto-plastic axially symmetric stress-strain state of flexible layered shells
- S.P. Timoshenko Inst. of Mechanics, Kiev (Ukraine)
The axially symmetric thermoviscoelastoplastic stress-strain state of layered shells is determined, taking into account the geometric nonlinearity in the quadratic approximation. A shell with variable thickness in the meridional direction and made of isotropic materials is considered. It is assumed that the layers of the shell are assembled without stretching, and that at the initial moment of time the shell is found in the unstrained state at initial temperature T = T{sub 0}. Axially symmetric mechanical and thermal loads, not causing twisting deformation, are acting on the shell. It is also assumed that the shell does not lose stability but rather its layers are deformed without slipping or detaching. The shell materials may be deformed within and beyond their elasticity limits, and creep strains may arise in them comparable with the instantaneous elastic and plastic strains. The strain trajectories of the material beyond the elasticity limits may be lines with small curvature. The problem of the stress-strain state of the shell in the quasistatic formulation is solved based on the equations for the simplest variant of the geometrically nonlinear theory of shells. 9 refs., 4 figs., 2 tabs.
- OSTI ID:
- 457629
- Journal Information:
- International Applied Mechanics, Vol. 30, Issue 8; Other Information: PBD: Feb 1995; TN: Translated from Prikladnaya Mekhanika; 30: No. 8, 80-87(Aug 1994)
- Country of Publication:
- United States
- Language:
- English
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