Wear behavior of pits textured grey cast iron rings with Zr/ZrN coatings under dry sliding
Wear behavior of pits textured grey cast iron rings with Zr/ZrN coatings under dry sliding
复制标题
Zr/ZrN涂层坑纹灰铸铁环干滑动磨损行为
DOI：
10.1177/1350650120940915
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发表时间：
2020
影响因子：
2
通讯作者：
Zhang Youwei
中科院分区：
文献类型：
--
作者：
Long Risheng;Sun Shaoni;Zhang Youwei
通过数值分析和实验测量，研究了复合材料T型加筋板桁条90 °铺层固化变形和强度的影响。在这项工作中，固化变形的有限元模型（FEM）固化动力学公式的基础上，利用。建立了基于Tsai-Wu破坏准则和增量/Newton-Raphson混合迭代方程的屈曲和破坏模型。对复合材料T形加筋板进行了固化、屈曲和后屈曲分析，得到了不同90 °纵桁比下的变形、临界载荷和失效模式。此外，还对不同90 °铺层比的桁条进行了试验研究。有限元数值计算结果与试验结果吻合较好，表明这种数值分析方法能够较好地评价结构的受力性能。另外，发现桁条90 °铺层对减小固化变形有重要作用，但对复合材料T型加筋板的轴压承载能力影响不大，这对在民航飞机上的应用有一定的参考价值。
The effect on curing deformation and strength of 90 degrees plies in stringers for composite T-shaped stiffened panel were presented by numerical analysis and experimental measurement. In this work, the finite element model (FEM) for curing deformation based on cure kinetics formulation was utilized. The model for buckling and failure based on Tsai-Wu failure criteria and incremental/ Newton -Raphson mixed iteration equation was established. The curing, buckling and post-buckling analysis were performed on composite T-shaped stiffened panels to obtain the deformation, the critical load and mode of failure, with different 90 degrees plies-ratios in stringers. Furthermore, the experimental investigation has been carried out for specimens with different plies-ratios of 90 degrees plies in stringers. The good agreement between the numerical results obtained by finite element method and the experimental ones demonstrated that this kind of numerical analysis could estimate appropriately the behavior of the structure. In addition, it was found that the 90 degrees plies in stringers play an important role in reducing the curing deformation, but it has little effect on the axial compression loading capacity for composite T-shaped stiffened panel, which is useful for application in civil aviation aircraft.