The Reconstruction Of Submerged Reverse-rotary Tiller And Virtual Experiment Of Throwing Soil

In this paper, submerged reverse-rotary throwing soil experiments varying by soil layer have been carried out by physical prototype and virtual prototype. A novel method is put forwards to design reliable submerged reverse-rotary tilling machines more efficiently.Recently, with the development of numeric calculate technology, it is possible that carry out virtual experiment on Submerged reverse-rotary. Due to establishing digital model of real reverse-rotary cutter is hard work, physical model experiment's result hard to testify with virtual experiment's each other. The processes to gain the cloudy-points of Submerged reverse-rotary tiller's outline by using ATOS2 scanner system are introduced. Data treatment in pro/e is carried out based on the NURBS(Non-Uniform Rational B-Spline) theory in order to obtain the digital model. The digital model make it possible to simulate the real work of the true tiller precisely.Based on SHSTSS (Soil High-Speed Tilling Simulation System based on Smoothed Particle Hydrodynamics) , combined with theory research and physical prototype experiment, virtual prototype experiment of submerged reverse-rotary throwing soil varying by layer is Carried out and found the rule of throwing soil of each layer.Original physical prototype equipment dated and safety cannot be guaranteed. According to the experiment ask, Change the Transmission Ratio, select dimensions of all key parts and put into manufacture,assembly and debugging. In order to testify high speed soil cutting system based on SPH, took CR2000 High speed imaging system to record the process of submerged reverse-rotary throwing soil and treated the pictures. Through analyzed the result testified the trail of true experiments and virtual experiments were identical approximately. Found the rule of sbmerged reverse-rotary throwing soil of varying layer and testify the SHSTSS virtual experiment system is reliable.