Optimization Study on Frame Material of Mini Wind Generator Base on FEM Stress Analysis

Abstract

A new kind of mini wind generator system has been presented for saving city electricity and developing potential green wind energy between high buildings in city environment. The support frame of this generator system is a key structure part. Stress conditions of this frame under different kinds of structure materials are analyzed with finite element method. The concentration of stress along frame pillar is achieved by the FEM results. A new analytical method, specified stress criterion is proposed with respect to the design of generator system. This criterion provides a new approach in optimizing the kind of material in structure design taking into account the material plastic properties. With regard to specified stress, glass fiber-reinforced epoxy is the best candidate material for supporting frame.