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基于金属-陶瓷复合材料的计算细观力学方法,将其扩展应用于高能固体推进剂,结合计算机虚拟实验,采用面向对象的程序设计方法,设计并实现了高能固体推进剂力学性能预示系统。该系统依据固体推进剂的细观结构特征对不同的夹杂材料选择不同的随机分布规律、体积分数、颗粒尺寸等,能快速获得随机生成的几何模型,并对高能固体推进剂的力学性能进行预示。与实验结果的对比表明该系统可以较好地预示具有不同组分比、不同细观结构特征的高能固体推进剂的初始模量、极限强度和极限延伸率。该系统的设计可以对固体推进剂进行反复试验、修正结果,从而大幅度地提高固体推进剂的设计效率,缩短研发周期和降低生产消耗成本。
Based on the computational mesomechanics method of metal-ceramic composites, this method is extended to high-energy solid propellants. Combined with computer virtual experiments, an object-oriented programming method is adopted to design and realize the predictive system of mechanical properties of high energy solid propellants. According to the meso - structure characteristics of solid propellants, different random materials, different random distributions, volume fractions, particle sizes and so on can be randomly selected to obtain the geometrical model and the prediction of the mechanical properties of high energy solid propellants . The comparison with the experimental results shows that the system can predict the initial modulus, ultimate strength and ultimate elongation of high energy solid propellants with different composition ratios and different mesostructural features. The system is designed to repeatedly test solid propellants to correct the results, thus greatly improving the design efficiency of solid propellants, shorten the development cycle and reduce production costs.