基于演化-单纯形算法和结构模态参数反演结构物理参数的方法

针对遗传算法、演化策略两种演化计算存在的问题,将一种基于浮点编码的演化-单纯形算法应用于结构动态反应下的结构物理参数反演分析,建立了一种基于不完全模态参数的结构物理参数反演分析方法.通过与其他方法的算例分析表明:该方法有精度和搜索效率高、对初值选取基本上无依赖性、可以较好地反映“残缺”的高阶模态信息等优点.

Structural Physical Parameter Identification Based on Evolutionary-simplex Algorithm and Structural Model Parameter

Aiming at the existing problems in genetic algorithm and evolutionary strategy calculation, the authors apply the evolutionary-simplex algorithm based on floating encoding to the inverse analysis of structural physical parameters under the dynamic response conditions, and establish an inverse analysis method about structural physical parameter based on incomplete modal parameters. As compared with other inverse analysis methods, this method shows a series of advantages such as high precision and searching efficiency, no dependence on the selection of initial values, and sufficient reflection on the inadequate high rank modal information.