Experimental Analysis of the Tensile Properties of Wheat Stalk
[Objective] The aim of the research was to analyze the tensile ability of wheat stalk. [Method] With naturally-dried wheat stalk of 0158-2 in mature period with water content of 51.3% whose sheath was removed as materials, the tensile ability of wheat stalk was studied. [Result] The stress-strain curve showed that the stress gradually increased with the augment of deformation and rupture appeared when the stress reached the maximum. The load -time curve showed that the load showed a linear increase with the changes of time. And the load was increased with the augment of deformation. When water content was 51.3%, the elastic modulus range of wheat stalk was 1 012.0-1 511.0 MPa and the intensity limit range was 30.9-134.7 MPa. Under dying situations, the elastic modulus range of wheat stalk was 2 672.3-4 593.0 MPa and the intensity limit range was 29.8-119.0 MPa. The higher wa1er content was, the smaller the elastic modulus and the intensity limit were. [Conclusion] When water content of wheat stalk was 51.3%, the elastic modulus of wheat stalk was 1 278.2 MPa and its intensity limit was 64.6 MPa. Under dying situations, the elastic modulus of wheat stalk was 3 114.7 MPa and its intensity limit was 78.0 MPa.
国家科技期刊平台
NSTL
万方数据
维普
