通过有限元软件MSC.Marc对纯钨粉末的CIP-烧结成型过程进行了数值仿真。分析了颗粒初始堆积结构、压制压力、烧结温度等因素对钨粉在冷等静压及烧结成型过程中的相对密度、局部/整体应力分布、颗粒变形情况、孔隙填充等致密化行为的影响。深入研究了单个颗粒在致密化过程中的不同特征，包括应力与形变程度的关系、颗粒内部不同区域的应力差异、颗粒尺寸与形变和应力的关系等，并从颗粒尺度探究了钨粉在成型与烧结过程中的致密化机理。

The CIP-sintering process of pure tungsten powder was numerically simulated by the finite element software MSC.Marc. The influence of the initial packing structure of particles, pressing pressure, sintering temperature and other factors on the relative density, local/overall stress distribution, particle deformation, pore filling and other densification behaviors of tungsten powder during cold isostatic pressing and sintering is analyzed. In-depth study of the different characteristics of a single particle in the densification process, including the relationship between stress and deformation degree, the difference in stress in different areas within the particle, the relationship between particle size and deformation and stress, etc., and explored the formation of tungsten powder from the particle size And the densification mechanism in the sintering process.