壳板组合结构功率传递分析

壳板耦合是圆柱壳组合结构中最常见的连接方式。为了研究壳板组合结构的功率传递规律,利用有效点导纳分析周向均布激励下圆柱壳表面振动响应的分布规律,得出圆柱壳振动响应理论计算公式;通过给出圆周线导纳的定义及其表达式,计算带端板圆柱壳的振动响应均方值之比。理论计算结果表明:壳板振动响应均方值之比随频率的增高逐渐增大,但其值始终小于1。实验测量结果与理论计算吻合,其值围绕理论值上下波动,表征了理论计算公式和分析结果的正确性和合理性。

Power Flow Analysis of the Coupled Cylindrical Shell with a Plate Ended

The coupled structure of the cylindrical shell with a plate ended is the commonesf in complex cylindrical structures. In order to study the power flow of this coupled structure, the effective point mobility method is used to analyze the distribution of the vibration response of the cylindrical shell with the circumferential excitation. The theoretical formula of this vibration response is then deduced. By giving the definition of the circumferential line mobility and its expression, the ratio of mean squared value of vibration response between the cylindrical shell and the ended plate is calculated. Theoretical results indicate that this ratio is gradually increasing with the frequency, however always less than one. The experiment shows that measurement results are and its results in agreement with theoretical values. This proves correctness and rationality of the theoretical calculation formula.