Structural optimization of shape adaptive structures

在“形状自适应结构的结构优化”项目的第二阶段，应将第一阶段提出的方法应用于更复杂的结构。虽然在第一阶段主要关注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几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，因此必须将优化的数值方法与非线性结构分析中已知的路径跟踪策略的数值方法相结合。这种结构在自适应结构领域的应用看起来非常有前途，因为利用几种形状的自平衡减少了由于这些形状之间的变化而产生的能量消耗，而形状的保持是不费力的，因此这种结构的能量消耗将减少到最小。在另一个研究课题中，应该讨论在自适应结构的背景下压电材料的最佳使用。这里必须考虑电场与机械变形之间的主动相互作用和被动相互作用。

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.