拓扑优化均匀化方法的改进迭代算法

针对大型连续体结构拓扑优化中迭代步过多、计算时间过长的问题,对拓扑优化均匀化方法进行了改进,并通过引入的2个密度阈值来控制计算过程.算例表明,采用改进的拓扑优化均匀化方法可有效减少迭代步数、节省计算时间,且不会影响拓扑优化计算结果.

Modified iterative method for topology optimization based on homogenization method

With regard to some disadvantages in the topology optimization of large continuum structures, such as a long computation time and many iteration steps, topology optimization based on the homogenization method was improved. A modified iterative method was proposed. Two density thresholds were employed to control the process of topology optimization. The numerical examples show that the modified iterative method can effectively reduce the iteration steps and the computation time, and has no influence on the results of topology optimization.