| Titanium alloy is a new material that has been developed rapidly in recent years,because the titanium alloy has excellent comprehensive mechanical properties such aslow density, corrosion resistance, high tensile strength and high temperature stabilitythat has made it to be one of the key support materials of the defense industry, modernaerospace and other fields.In order to solve the machining deformation problem oftitanium alloy aviation aerospace monolithic, we should use finite element simulationtechnology to research under considering the cost and efficiency. And from theperspective of more accurate and more widely, we need to combine the microstructurecharacteristics of the material and the macroscopic geometric characteristics of theartifacts, based on the finite element simulation technology to do more accurateprediction and analysis, which aspects of the current research also seldom reported athome and abroad. Therefore, face to the simulation analysis of complex machiningdeformation of the titanium alloy monolithic structure, this paper studied deeply andsystematically about computer reconstruction technology of titanium alloymicrostructure.Studies the dimensional computer reconstruction in this paper,3D reconstructionand the realization of the program of titanium’s material microstructure. The maincontents are as follows:Firstly, in the alloy microstructure remodeling of two-dimensional computerreconstruction algorithm, to overcome the shortcomings of existing computerreconstruction algorithm efficient computer reconstruction algorithm based ongeometric feature extraction and visual simulation is proposed. Based on theexperimental data of Titanium alloy material’s scanning electron microscope andseparation and extraction of grain’s contour geometry, and the material two-dimensionalmicrostructure visually designed of computer language, ultimately the titanium materialmicrostructure multi-dimensional computer reconstruction of grain topology is achieved.This provides the foundation of further three-dimensional computer reconstruction oftitanium alloy microstructure.Secondly, in the aspects of three-dimensional reconstruction of alloymicrostructure, in order to improve the errors existed largely of the traditional materialmicrostructure three-dimensional computer reconstruction material microstructurethree-dimensional computer reconstruction based on modified voxel method is proposed.Based on the data obtained from Titanium-experimental continuous slicing and throughthe computer programming language, the two-dimensional model data structure oftitanium alloy microstructure is obtained. On the basis of these the traditional voxelmethod gets corrected. On the other hand, by connecting smoothly the small cubes that are represented by the measurement points from the same grain boundaries to obtain theideal model of three-dimensional reconstruction of titanium alloy microstructure. Thusit achieves the titanium alloy microstructure visualization.By means of alloy microstructure become2D and three-dimensional computerreconstruction, the visualization of alloy microstructure comes true. These lay thefoundation for quantitative analysis of titanium alloy material performance by thefurther numerical simulation technology. And them also provide the support of data onthe virtual failure’s analysis. |
