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为了解决振动吸振器优化设计的非线性多维离散问题 ,引入了全局搜索遗传算法 .以频率范围内的声功率峰值最小作为目标函数 ,对吸振器的位置及结构参数进行优化设计 .采用了混合编码与steadystate算法操作 ,以提高遗传算法的性能 ,用位移响应基础法替代传统的有限元方法计算了声功率值 ,节约了遗传算法的计算时间 .最后以悬臂板梁为例 ,对算法进行了验证 .
In order to solve the problem of non-linear multidimensional discrete optimization of vibration absorber, a global search genetic algorithm is introduced to optimize the position and structural parameters of the absorber with the minimum of the peak acoustic power in the frequency range as objective function. And steadystate algorithm to improve the performance of genetic algorithm, and calculate the sound power value by using the displacement-responsive basic method instead of the traditional finite element method to save the computational time of the genetic algorithm.Finally, the cantilever beam is taken as an example to verify the algorithm .