Experiment Study on Compression Characteristics of Corn Straw
In order to make better use of corn straw as biomass material and to provide certain technical parameters for de-signing and optimizing the structure of straw harvesting,bundling,cutting and so on,the compression test of corn straw in cold region was carried out.The orthogonal experiment of three factors and three levels was designed to collect corn straw in cold region.Combined with the self-made experimental device,the radial and axial compression tests of corn straw were tested by universal testing machine and digital blast drying box.The destructive power of different parts,different speed and different moisture content under different horizontal combinations was measured in order to determine the significance of the factors and obtain the optimal horizontal combination.The results showed that the axial compression destructive power of corn straw was 0.726-3.271 kN,and the R value was 0.586-1.527,F value was 7.093-38.742.The results showed that the radial compression destructive power of corn straw was 0.370-2.297 kN,and the R value was 0.382-0.921,F value was 9.096-22.183.The analysis shows that the influence of each factor on the test index is very signifi-cant,followed by the loading speed and moisture content.The optimal horizontal combination is that the position of straw is upper,the loading speed is 10 mm/min,the moisture content is the lowest,and the destructive power required by ra-dial compression is less than that required by axial compression.
万方数据
维普
