During the last ten years a considerable volume of inform ation has been accumulated regarding the inelastic behaviour of materials. The increasing number of communications published in specialised journals and also the frequency of meetings in these fields, indicates a considerable research effort aimed at such topics as plasticity, creep, fatigue, visco-plasticity and the like. This fact encouraged a group of Brazilian researchers, stimulated enthusiastically by Professor P. Germain, to submit a proposal for a Symposium on the "Inelastic Behaviour of Plates and Shells" to the General Assembly of IUTAM. Brazil had recently joined IUTAM and the Brazilian Association of Mechanical Sciences was eager to host an IUTAM meeting. In the selection of the subject, it was taken into account, besides a promising number of original contributions, the interest to be raised amongst the Brazilian researchers and engineers, in order to maximise the participation of the host country. The recent steps taken in this country towards the develop ment of the aero-space industry, the construction of nuclear power plants a.nd the off-shore exploration of petroleum have required an intensification of research activities in several fields, structural behaviour of plates and shells being one of the most important. Therefore, the suggested theme would attract the interest or a significant group of Brazilian researchers and engineers and match the necessity for exchanging experience among leading scientists working in those fields.
Table of ContentsThe Effects of Thermal Loading on the Deformation of Shell Structures.- Wrinkling in Thin Plates due to In-plane Body Forces.- Derivation of the Inelastic Behaviour of Plates and Shells From the Three Dimensional Models and Extensions.- Analysis of Large Plastic Deformations in Shell Structures.- Dynamic Behaviour of Structural Elements Liable to Buckling.- Time Deflection Behaviour of Ice Plates.- Fracture and Fatigue of Composite Plates and Shells.- Reference Stress Concepts for the High Temperature Deformation and Rupture of Cyclically Loaded Shell Structures.- Failure of Hyperbolicity in Soft Shells.- Buckling Analysis of Reinforced Concrete Shells.- Dynamic Buckling of a Rigid-Plastic Cylindrical Shell: A Second Order Differential Equation Subject to Four Boundary Conditions.- On Buckling and Post-buckling of Elastic and Inelastic Thin Shells in Primal and Mixed Formulations.- Limit State of Steel Cylindrical Structures Under Earth-quake Loadings.- Buckling of Spherical Domes Made of Microconcrete and Creep Buckling of Such Domes Under Long-term Loading.- Dynamic Stability of Voscoelastic Shallow Shells.- Optimum Design of Structures Made of Elastic- Plastic Materials.- Mathematical Models for the Analysis and Optimization of Elasto-plastic Plates and Shells Under Complete Plastic Failure.- Optimal Plastic Design of Plates, Shells and Shellgrids.- Optimization of Cylindrical Shells Under Combined Loading Against Brittle Creep Rupture.- The Collapse of Continuously Welded Stiffened Plates Subjected to Uniaxial Compression Load.- Limit Analysis and Design of Plates and Shells.- Analysis of the Finite Deflection of Visco-plastic Plates Using the Finite System Method.- On a Nonlocal Biaxial Strength Criterion for Concrete and its Application to Ultimate Load Analysis of RC Shells by the FEM.- Global Methods for Reinforced Concrete Slabs.- On Theories of Elasto-PIastic Shells in Mixed Tensor Formulation.- Limit Analysis of Shells of Revolution using Two Finite Element Approaches.- Inelastic Behaviour of Shells under Concentrated Loads.- Axially Loaded Metal Tubes as Impact Energy Absorbers.- The Deformation of Thin Plates Subjected to Impulsive Loading.- Collapse Behaviour of Circular Aluminium Plates.- Shakedown Analysis of Thin Tube Under Cyclic Loading Cases.