Balanced and Symmetric Laminates - New Perspectives on an Old Design Rule
Balanced and Symmetric Laminates - New Perspectives on an Old Design Rule
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平衡和对称层压板 - 旧设计规则的新视角
DOI：
10.2514/6.2010-2775
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发表时间：
2010
影响因子：
3.6
通讯作者：
P. Weaver
中科院分区：
文献类型：
--
作者：
C. York;P. Weaver
堆叠顺序列表中列出的弯扭耦合层压板（ASB 0 DF），多达21层。研究表明，平衡和对称堆叠序列的共同设计规则主要引起弯曲-扭转耦合;所有例外情况均在AIAA-2007-2083中列出。然而，对称性规则被证明是一个约束，仅用于限制可能的配置的数量，以一个非常小的比例的总设计空间，这种层压板指定。这是证明通过一个明确的列表层压板配置，其特征在于在角度和交叉帘布层子序列对称性。每个堆叠序列配置一起提出的无量纲参数，从该拉伸和弯曲刚度项很容易计算。给出了无量纲参数与已知层压参数之间的关系式，以及包含标准铺层角组合（±45 °、0 °和90 °）的所有子序列对称性的可行域的图示。准各向同性（AIB 0 DF）层合板也作为ASB 0 DF层合板的一个重要子集。最后给出了剪切和压缩下屈曲性能的界限。
Stacking sequence listings are presented for bend-twist coupled laminates (ASB0DF), with up to 21 plies. The study demonstrates that the common design rule of balanced and symmetric stacking sequences predominantly gives rise to bend-twist coupling; all exceptions are presented in AIAA-2007-2083. However, the symmetry rule is shown to be a constraint that serves only to restrict the number of possible configurations to a very small proportion of the total design space for this laminate designation. This is demonstrated through a definitive list of laminate configurations, which are characterized in terms of angle- and cross-ply sub-sequence symmetries. Each stacking sequence configuration is presented together with dimensionless parameters from which the extensional and bending stiffness terms are readily calculated. Expressions relating the dimensionless parameters to the well-known lamination parameters are also given, together with graphical representations of feasible domains for all sub-sequence symmetries containing standard ply angle combinations i.e. ±45, 0 and 90 degrees. Quasi-isotropic (AIB0DF) laminates are also presented as an important sub-set of ASB0DF laminates. Finally, bounds on buckling performance under shear and compression are presented.