Structural optimization of shape adaptive structures

形状自适应结构的结构优化

• 批准号: 189566908
• 负责人: Professor Dr.-Ing. Kai-Uwe Bletzinger
• 金额: --
• 依托单位: Lehrstuhl für Statik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/189566908?language=en
• 关键词: Structural; optimization; shape; adaptive; structures

In the second phase of the project "structural optimization of shape adaptive structures" the methods which were developed in the first project phase should be applied to more complex structures. While in the first phase the general kinematic behavior of shell structures was in focus, we want to investigate structures with several shapes of self-equilibrium in this project phase. As these structures are usually characterized by a highly nonlinear structural behavior, the numerical methods of optimization have to be combined with those of the path following strategies known from nonlinear structural analysis. The use of this kind of structures in the field of adaptive structures looks very promising, as the exploitation of several shapes of self-equilibrium reduces the energy consumption to the change in between these shapes, while the maintaining of the shape is done without any effort, and so the energy consumption of this kind if structures would decrease to a minimum.In another research topic the optimal usage of piezoelectric material in the context of adaptive structures should be discussed. Here the active as well as the passive interaction in between the electric field and the mechanic deformation has to be considered.

在“形状自适应结构的结构优化”项目的第二阶段，第一项目阶段开发的方法应应用于更复杂的结构。虽然在第一阶段关注的是壳结构的一般运动学行为，但我们希望在这个项目阶段研究具有多种自平衡形状的结构。由于这些结构通常具有高度非线性的结构行为，因此优化的数值方法必须与非线性结构分析中已知的路径跟踪策略相结合。这种结构在自适应结构领域的应用看起来非常有前途，因为对几种自平衡形状的利用减少了这些形状之间变化的能量消耗，而形状的维持却毫不费力。 ，因此如果结构将减少到最低限度，则这种能量消耗。在另一个研究主题中，应该讨论在自适应结构的背景下压电材料的最佳使用。这里必须考虑电场和机械变形之间的主动和被动相互作用。