Optimization of individual spring rack disc harrow

Abstract

In this paper the problem of intense stressed-deformed state of disc harrow separate spring shank calculation with the subsequent optimization of geometry has been considered. Recently in connection with intensive development of agro-industrial complex need of new creation, more effective agricultural machinery appears. The main criteria of quality at design of new tools are energy efficiency, reliability and the price. Owing to it there is a need of optimization of the existing designs for the purpose of their improvement to the international standards. Key question is reliability of the rack at influence of a range of operational loads of her at design of disk harrows on individual spring racks. Generally, in processing of the soil the disk experiences complicated static and dynamic loading which leads to destruction of racks. In the real paper calculation of the intense deformed condition of a rack in the most dangerous operating mode has been considered. By the received results problem definition of optimization in a finite element method program complex has been formulated. The offered approach allows providing increase in durability of a rack without entering of essential changes into an initial design.