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连续丝束剪切(CTS)作为一种新的丝束变角度(VAT)铺放技术,能克服传统的自动铺丝技术(AFP)的诸多缺陷。鉴于此,分别采用CTS和AFP这2种技术铺设而成的VAF层合板为研究对象,对其屈曲性能进行了有限元分析;在施加相同端部轴向位移的条件下,以铺层顺序[90±<0|75>]4s为例,对比分析了2种层合板的内力分布;最后,讨论了丝束最小转弯半径对2种铺放技术的影响。结果表明:CTS层合板因其变厚度的特性,其屈曲性能优于AFP层合板;与AFP技术受制于最小转弯半径,导致其在小尺寸结构中的应用受到限制相比,CTS技术适用于各种尺寸的层合板。
Continuous strand shear (CTS), as a new technique for depositing variable angles (VAT), overcomes many of the shortcomings of traditional Automatic Lay-up Technology (AFP). In view of this, the VAF laminates laid by two technologies of CTS and AFP, respectively, were studied, and their buckling performance was analyzed by finite element method. Under the condition of the same axial displacement, 90 ± <0 | 75>] 4s as an example, the internal force distributions of the two kinds of laminates were compared and analyzed. Finally, the influence of minimum turning radius of tow on the two kinds of laying technology was discussed. The results show that CTS laminates have better buckling properties than AFP laminates because of their variable thickness. Compared with AFP technology, which is limited by the minimum turning radius, the application of CTS technology in small size structures is limited. Laminates of various sizes.