以阻尼材料用量为约束,以最大化结构损耗因子为目标,利用有限元方法实现圆形阻尼层合板的拓扑优化设计.对优化前、后的圆形阻尼层合板进行振动实验,测试结果表明优化后结构阻尼比是优化前的1.3倍.基于结构阻尼比与单位体积结构损耗因子均表示结构件标准化阻尼能力及单调变化相同的特性,以实测结构阻尼比表征单位体积结构损耗因子,验证结构拓扑优化设计的有效性.即优化设计圆形阻尼层合板构型能有效地降低阻尼层的用量,提高阻尼层的利用率,增强结构的阻尼特性.%With the finite element method, the topologic optimal design of a circular laminated damping plate was performed. In the model, the objective was to maximize the structural loss factors and the constraint was to restrain the amount of damping material. Vibration tests were conducted for the original and optimized plates. The measured results indicated that the structural damping ratio of the optimized plate was 1. 3 times of that of the original one. Based on that both structural damping ratio and structural loss factors of unit volume indicated standardized damping properties and the uniform monotonicity, the measured structural damping ratio was used to represent the structural loss factors of unit volume. The measured results verified the effectiveness of the topologic optimization, I. E. , the topologic optimal design of the circular laminated damping plate decreased the amount of the damping material, increased the damping material usage ratio and enhanced the damping properties of the structure.
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