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|Title:||ELASTO-PLASTIC ANALYSIS OF R.C. PLATES AND SHELLS|
|Keywords:||CIVIL ENGINEERING;ELASTO-PLASTIC ANALYSIS;R.C. PLATES;R.C. SHELLS|
|Abstract:||For many years, the analysis and design of structures have been based on a linear theory of elasticity assuming isotropic behaviour of the constituent materials. However, present day numerical capabilities readily allow the collapse behaviour of structures to be modelled, accounting for stress redistribution due to plastic beahviour. Most of the structural materials exhibit anisotropy, but isotropic behaviour has been assumed for simplicity of analysis. The elasto-plastic analysis of plates and shells has been carried out by means of the finite element method: A thick shell formulation accounting for shear deformation is considered, which is based on a degenerated three-dimensional continuum element. The accommodation of variable material properties through the thickness is made possible by a discrete layered approach. The numerical model applicable for analysis of thick or thin shells and plates is developed using 9 noded Lagrange element. The finite element procedure adopted for elasto-plastic analysis follows the initial stress approach. Linear geometric behaviour is assumed. In the present work, non-linear analysis of shells and plates has been simulated by employing strain hardening resulting in more realistic modelling of real material behaviour. A set of curves illustrating the influence of hardening on load-deformation response are plotted. Effect of tension stiffening on plate/shell structure is assessed by analysing a clamped square plate under self loading and with or without reinforcement.|
|Research Supervisor/ Guide:||Bhandari, N. M.|
|Appears in Collections:||MASTERS' DISSERTATIONS (Civil Engg)|
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