基于广义牛顿流体本构方程,采用ARD-RSC纤维取向模型,考虑纤维间相互作用,仿真预测长玻纤增强复合材料注塑构件的纤维取向分布;应用复合材料细观力学Eshelby夹杂理论和Mean Field均匀化方法,建立长玻纤增强复合材料均质化RVE模型;综合运用复合材料细观建模、离散RVE模型场、注塑成型和结构有限元分析技术,提出了长玻纤增强复合材料注塑构件强度分析方法.对推力杆注塑构件进行强度分析,显示仿真危险位置与实际破坏位置较为吻合.在此基础上对推力杆进行结构改进,结果表明杆体中间部分在拉伸载荷下的最大主应力降低了 57. 18％,在压缩载荷下的最大主应力降低了 71. 25％.%Based on the generalized Newtonian fluid constitutive equation, using ARD-RSC fiber orientation model, numerical simulation was used to predict fiber orientation distribution of the long-glass fiber reinforced composite injection molding components by considering the interaction between fibers. The fiber homogenized RVE model of long glass fiber reinforced composites was established through the composite material micromechanics Eshelby inclusion theory and Mean Field homogenization method. By using composite meso-scale modeling, discrete RVE model field, injection molding and structural finite element analysis techniques, the strength of long glass fiber reinforced composites analytical method was proposed. The strength analysis of the thrust-rod injection molded part shows that the simulated dangerous position is in good agreement with the actual damage location. On the basis, the structure of thrust rod is improved, the results show that the maximum principal stress of the rod is reduced by 57. 18％ under the tensile load and 71. 25％ under the compressive load.
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