Strength Analysis of an Archimedes Wind Turbine Model Designed for Additive Manufacturing
Abstract
The article examines the Archimedes wind turbine model with a diameter of 1,500 mm in terms of the strength of its construction. It describes in detail the material properties of the turbine produced by means of alternative methods, specifically by means of the Selective Laser Sintering additive technology. By combining CFD simulation and strength analysis, the article solves the influence of the pressure force of the wind and the speed of the turbine on the tension and deformations in its construction. The results are compared with commercially available turbines made of composite materials.
Keywords
Download Options
Introduction
Research and development of new special types of wind turbines makes it possible to use the huge potential of wind energy in the world in areas where the application of conventional wind turbines is not suitable. One of the many types of wind turbines is the so-called Archimedes wind turbine, the development of which has been ongoing since the beginning of the 21st century. The design of the turbine minimizes the negative aesthetic impact on the surroundings. At the same time, the essence of the design forces the turbine to rotate automatically in the direction of the wind, which results in less demanding operation. From this point of view, the device is suitable, for example, for use for private purposes in densely populated areas. Therefore, increased safety requirements are placed on its operation, and it is necessary to know the strength limits of the device, so that during its operation there is no damage to it and subsequent damage to health and property.
Conclusion
Considering the development of events in the world in recent years, the Archimedes wind turbine can serve as one of the ways of diversifying energy sources for small companies and households, which could contribute to increasing their independence and stability. The production of electricity through wind power itself does not produce waste, does not pollute the air and does not have a negative impact on people's health. These are the most important reasons for the development of innovative equipment in the field of wind energy use. Commercially used Archimedes wind turbines are usually made from a single piece of composite material consisting of plastic and fiberglass. An alternative is the production of turbines through additive methods, which, however, results in a difference in the strength properties of the turbine. The maximum revolutions at which the examined turbine with a diameter of 1,500 mm, made by the additive method from the material Nylon PA12, is able to work without damage is 3.5 rev·s-1 , at which it reaches a maximum stress of 41 MPa. Improving the durability of the turbine can be achieved without changing the material, for example by applying reinforcements in the space between the blades.