Stress and Displacement Analysis on Communal Horizontal Composter 40 Kg Capacity Using Solidwork

Abstract

Organic waste can be processed become the compost. One of the most important to support the composting process is the composter. It has been designed a 40kg communal horizontal composter machine used to accelerate the composting process. This machine is powered by an electric motor and spins horizontally. On the machine there is an agitator that serves to stir, mix, and flatten the waste. Agitators should be able to lift the load on the waste in the composting process. The maximum ability of the horizontal agitator in lifting the waste load cannot be seen visually, but it can be known by analysis using Solidwork. The purpose of this research is to analyze the stress and displacement that occurs in composer. There are two types of agitator, namely agitator horizontal which amounted to 3 pieces and agitator end of which given the corner of 30o which amounted to 6 pieces. Different types of agitators affect the function of each agitator, which is to flatten the stirring, and some are enabled to break up the waste blob. Analyzes were performed at various position positions i.e. 0o, 45o, 90o, 135o and 180o. The analysis is performed on static state. The result shows that the maximum stress of the agitator at the position of 180˚ is 65N/mm², and the maximum displacement is 0.9mm for the angular position 180˚. While the results of agitator analysis that has a position of 30º, maximum stress of 47 N/mm² and maximum displacement of 0.7 mm. The results of the analysis show that the stress that occurs is still below the allowable stress of 344.7 N/mm².