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首页> 外文期刊>Composite Structures >A framework for design and optimization of tapered composite structures. Part Ⅱ: Enhanced design framework with a global blending model
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A framework for design and optimization of tapered composite structures. Part Ⅱ: Enhanced design framework with a global blending model

机译：用于设计和优化锥形复合结构的框架。第二部分：具有全局混合模型的增强型设计框架

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A high-dimensional variable design space in optimization problems for tapered composite structures presupposes a development of efficient computational techniques to improve the design efficiency and flexibility. In this work, a mathematical model for optimization of tapered composite structures with buckling and manufacturing constraints is developed, then a ply-drop-based global blending model (GBM) is suggested to address the layers' addition/deletion and blending problems. Within the framework proposed in Part I of this work (Compos Struct, 2016, 154: 106-128), by incorporating the global blending model, operations of add-layer, exchange-blend and sequence-adjustment are revised and enhanced. The GBM can not only characterize the global blending property, but also guide the maximum blending design. Accordingly, the design framework is simplified, and its computational cost is reduced significantly since there is no iteration of shape prediction and stacking-sequence optimization procedure. An 18-panel benchmark problem is adopted to verify the enhanced design framework, as compared with previous design results, the obtained better solution with higher efficiency implies its feasibility and potential for effective design of tapered composite structures.
机译：锥形复合结构优化问题中的高维变量设计空间以开发有效的计算技术为前提，以提高设计效率和灵活性。在这项工作中，建立了一种优化具有屈曲和制造约束的锥形复合结构的数学模型，然后提出了基于层滴的全局混合模型（GBM），以解决层的添加/删除和混合问题。在这项工作的第一部分（Compos Struct，2016，154：106-128）提出的框架内，通过合并全局混合模型，对添加层，交换混合和序列调整的操作进行了修订和增强。 GBM不仅可以表征全局混合特性，还可以指导最大混合设计。因此，由于不存在形状预测和堆叠序列优化过程的迭代，因此简化了设计框架，并显着降低了其计算成本。采用18板基准问题来验证增强的设计框架，与以前的设计结果相比，所获得的更好的解决方案具有更高的效率，这暗示了其可行性以及对锥形复合结构进行有效设计的潜力。

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