Assistant Professor,

Abstract- The aim of this paper is to examine the stress and displacement for pico turbine blades. The engineer’s work is to design blades that can operate safely in harsh environments and be able to avoid failure and deformation of blades. This requires in-depth finite element modeling and structural analysis. Due to shape of the blade it is not possible to calculate the stresses of rotor blade using analytical method. Hence ANSYS, a solid modeling & a finite element package is used to calculate the stresses for rotor blades. The results were analyzed for runner and found location of several critical sections subjected to high stress concentration at hub section. Analysis shows that the maximum stress is produced at hub and blade joint section which is safe up to speed limit 5000 rpm. Index Terms- Finite element analysis (FEA), pico turbine, stress, runner blad