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，应将项目第一阶段开发的方法应用于更复杂的结构。虽然在第一阶段的重点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中的使用看起来非常有前途，因为利用几种形状的自平衡减少了这些形状之间的变化的能量消耗，同时无需任何努力就可以保持形状，在另一个研究课题中，研究了压电材料在结构中的最佳使用，应讨论适应性结构的背景。在这里，必须考虑电场和机械变形之间的主动和被动相互作用。

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.