The evaluation of upper and lower bounds of the plastic limit state of frame structures using the upper bound theorem
Tipus de documentTesina
Condicions d'accésAccés obert
The aim of the thesis is to find the ultimate load of a frame structure under the assumption of perfect rigid plasticity. This is known as the limit state of the structure and forms the basis of modern design procedures and codes of practice. Nowadays, all modern codes of design of structures are based on limit state analysis. Two well kwnown theorems govern this type of analysis, namely the lower bound theorem, for which the problem variables are generalized stresses and the upper bound theorem, for which the unknowns are displacements and permits a similar treatment than traditional elastic analysis.