约束层阻尼短圆柱壳拓扑优化分析及实验研究

Topology optimization and tests for a short cylindrical shell with constrained layer damping

针对约束层阻尼短圆柱壳拓扑优化问题,采用基于模态应变能法的渐进结构优化算法(ESO),引入独立网格滤波技术,通过灵敏度分析,用ANSYS的参数化设计语言APDL编写拓扑优化程序,获得一定约束层阻尼材料用量的约束层阻尼最优拓扑构形,并对约束层阻尼材料的优化布局进行实验验证。研究表明该拓扑优化方法正确,用于短圆柱壳约束层阻尼材料布局优化具有较强的工程实用性。

Here, the evolutionary structural optimization （ES0） algorithm in conjunction with modal strain energy method was used to solve the topological optimization problem of a short cylindrical shell with constrained layer damping treatments. Furthermore, the independent grid filtering technique was applied to obtain a regular optimized constrained layer damping layout. The topology optimization procedures were written with ANSYS parametric design language （APDL）. The optimal topology layout of constrained layer damping was obtained for the short cylindrical shell with constrained layer damping under the constraint of a certain damping material consumption. Finally, the theoretical results were verified using tests for the short cylindrical shell with optimal topology layout of constrained layer damping. The results showed the effectiveness and feasibility of the proposed topology optimization method. It was shown that the proposed method is applicable for engineering structures.