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Layout optimization of doubly-curved laminated composite shells of revolution

机译:双曲层合旋转复合壳的布局优化

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摘要

Presents a finite element formulation of the layout optimization and design sensitivity applied to doubly-curved shells of revolution. The objectives of the optimization are to maximize buckling pressures and first-ply-failure pressures. The problem is formulated and solved with the use of geometrically nonlinear transverse shear shell theory. However, the optimization method proposed limits the sensitivity analysis to a geometrically linear problem. Focuses special attention on the formulation of the optimization problem taking into account various factors, such as the form of geometrical and physical relations, types of design variables and the finite element discretization. Demonstrates several numerical examples to illustrate the capability of the proposed optimization procedures.
机译:提出了用于双曲线旋转壳体的布局优化和设计灵敏度的有限元公式化。优化的目的是使屈曲压力和初次破坏压力最大化。该问题是通过使用几何非线性横向剪力壳理论来解决的。但是,提出的优化方法将灵敏度分析限制在几何线性问题上。考虑到各种因素,例如几何和物理关系的形式,设计变量的类型和有限元离散化,将重点特别放在优化问题的制定上。演示了几个数值示例,以说明建议的优化过程的功能。

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