The Analysis Of Mechanical Properties Of The Carbon Nanotube Reinforced Magnesium Matrix Composite Material

The mechanical properties of the carbon nanotube are quit superior, it is a newnanomaterials which has many advantages such as high stiffness, high tensile strength,high resistance bending distortion and low density, the application prospect of CNT isvery wide. Magnesium matrix composite material has many advantages such as lowdensity, high ratio strength and high ratio stiffness. Thus the research on the mechanicalproperties of the carbon nanotube reinforced Magnesium matrix composite material isvery necessary, and this research is also very valuable.The software of this article is Ansys, through establishing the microcosmic finiteelement model of the composite material, study the mechanical properties of thecomposite material, the major contents are following:(1) Establishing the finite element model, considering the impact on the compositematerial due to different length diameter ratio. This use CNT which has five kinds oflength diameter ratio, and two different hard and soft interface respectively. Throughanalyzing the results, we can obtain that the results of enhancement to the compositematerial based on the longer fiber and hard interface are much better. And the criticallength can be obtained; The impact between the length diameter ratio and the interface iscoupling.(2) By using the method of strain-energy change, we can calculate the Young’smodulus and the bulk modulus of the composite material, through calculating the resultsof enhancement to the modulus of composite material based on the different fiber andhard-soft interface, and comparing the data, it illustrates the impact of enhancing themodu of composite material of the length and the strength of the interface.(3) By using ANSYS to establish the the microcosmic finite element model of thecomposite material, and obtain the relationship between stress and strain, and comparing the predictive value of the composite material with the results of some other empiricalformula，then to illustrate the feasibility and the accuracy of the modulus we obtained.