| Partner: J. Lellep |
Ostatnie publikacje
| 1. | Lellep J.♦, Sawczuk A., Optimal design of rigid-plastic cylindrical shells in the post-yield range, INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, ISSN: 0020-7683, DOI: 10.1016/0020-7683(87)90024-2, Vol.23, No.5, pp.651-664, 1987 Streszczenie: An optimal design technique is developed for rigid-plastic cylindrical shells subjected to a distributed transverse pressure and a specified axial load. Moderately large deflections are taken into account and a deformation-type theory of plasticity is employed. The optimal design procedure results in a unified approach to optimization in the post-yield range. Necessary conditions for optimality are established by the aid of variational methods of the optimal control theory. Two examples are presented: (1) the optimal layout of rigid circular supports (stiffeners) is found which minimizes the mean deflection; (2) the optimal thickness distribution of a sandwich shell is established which corresponds to the minimum material consumption requiring the deflection of the design coinciding with that of the constant thickness shell. Afiliacje autorów:
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