Experimental Study on the Tensile Strength and Stress-Strain Curve of Imitation Wood Material
Imitation wood material,an inorganic cementitious material,is formed by taking magnesium oxychloride cement as the matrix,plant fiber as the reinforcement,then adding citric acid,Tartaric acid and Sodium hexametaphosphate and mixing evenly,and finally curing under high pressure.In order to study its tensile strength and tensile constitutive equation,30 specimens were made for axial tension test,and effective data of 22 specimens were collected.The results show that the axial tensile strength of Imitation wood material is 7.98 MPa,the coefficient of variation is 0.121,the tensile modulus of elasticity is 3 600 MPa,and the coefficient of variation is 0.089.Under axial tension,the stress of the material rapidly decreases after reaching the peak stress,leading to brittle failure of the specimen.According to the stress and strain test results,the axial tension constitutive equation of the material is obtained by fitting,which can be used as a reference for the inelastic application of materials.
万方数据
维普
