Experimental study on scheme optimization of composite damping structure was carried out and the effect of environmental temperature on damping characteristic was investigated in the present study. Damping coefficient of three layers composite damping structure is nearly ten times of that of light plate. The scheme of composite damping structure has a significant effect on damping characteristic. Effect of environmental temperature on damping characteristic was analyzed under temperature range from −10 °C to 80 °C. It shows that both of frequency and damping coefficient of composite damping structure are influenced by environmental temperature. There is a minimum frequency value which occurs at nearly 30 °C in the temperature range. Damping coefficient decreases with the increase of environmental temperature. The maximum damping coefficient is more than twice of the minimum one. Environmental temperature needs to be well considered in the practical application of composite damping structure.

中文翻译：

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复合阻尼结构方案优化试验研究

开展了复合阻尼结构方案优化试验研究，研究了环境温度对阻尼特性的影响。三层复合阻尼结构的阻尼系数是轻型板的近十倍。复合阻尼结构的方案对阻尼特性有显着影响。在-10°C至80°C的温度范围内分析环境温度对阻尼特性的影响。结果表明，复合阻尼结构的频率和阻尼系数均受环境温度的影响。在温度范围内，在接近 30 °C 时会出现一个最小频率值。阻尼系数随着环境温度的升高而降低。最大阻尼系数是最小阻尼系数的两倍以上。复合阻尼结构在实际应用中需要充分考虑环境温度。