棉秆力学性能试验

以创新棉958棉秆为试验材料,在万能试验机上对收割期的棉秆进行剪切、压缩、弯曲力学性能试验。试验结果表明：试样的含水率在30%～50%时,棉秆底部和中部的抗压强度、剪切强度较小,分别为1.66～3.13MPa、0.74～1.12MPa;试样的抗弯强度随含水率的升高而降低,试样底部弯曲强度为4.20～5.08MPa。在剪切、压缩、弯曲试验中,试样底部消耗的功分别为2.98～4.32N·m、2.91～4.34N·m、1.51～4.18N·m。

Mechanics Characteristics of Cotton Stalks

With innovation cotton 958 cotton stalks as test material, shearing, compression and bending mechanical tests of cotton stalk in harvesting period were carried out in the universal test machine. The results showed that when the sample moisture content was in 30%~50%, the compressive intensity and shear intensity at the bottom and middle of cotton stalk was lesser, the intensity value were 1.66~3.13MPa and 0.74~1.12MPa, respectively. Cotton stalks bending intensity decreased with its moisture content increased. The bending intensity values of samples at the bottom was 4.20~5.08MPa. In the test of shearing, compression and bending, the consumption power of the sample was 2.98~4.32N·m, 2.91~4.34N·m, 1.51~4.18N·m, respectively.