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首页> 外文会议>Conference on damping and isolation >Control of sound radiation from an active constrained-layer damping treated plate into an acoustic cavity using structural intensity a
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Control of sound radiation from an active constrained-layer damping treated plate into an acoustic cavity using structural intensity a

机译：使用结构强度a控制从有源约束层阻尼处理板到声腔的声辐射

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Abstract: Considerable attention has been devoted to actively and passively control of the sound radiating from vibrating plates into closed cavities. With the advent of smart materials, extensive efforts have been exerted to control the vibration and sound radiation from flexible plates using smart sensors/actuators. Active Constrained Layer Damping (ACLD) treatment has been used successfully for controlling the vibration of various flexible structures. The treatment provides an effective means for augmenting the simplicity and reliability of passive damping with the low weight and high efficiency of active controls to attain high damping characteristics over broad frequency bands. The proposed study is investigated using a numerically simulated example consisting of an ACLD treated plate/acoustic cavity system excited by a point harmonic force. In this study, an ACLD treated plate/acoustic cavity coupled finite element model is utilized to calculate the structural intensity and sound pressure radiated by vibrating plates. In the passive control, the optimum placements of ACLD patches are determined by structural intensity of ACLD treated plates and compared to the results obtained by modal strain energy approach. The influence on structural intensity of plate due to damping treatment is investigated. !10
机译：摘要：人们已经对主动和被动控制从振动板辐射到封闭腔体中的声音进行了相当大的关注。随着智能材料的出现，人们已经进行了广泛的努力来使用智能传感器/执行器来控制柔性板的振动和声音辐射。主动约束层阻尼（ACLD）处理已成功用于控制各种柔性结构的振动。该处理提供了一种有效的手段，可通过降低主动控制装置的重量和效率来提高被动阻尼的简单性和可靠性，从而在宽频带上实现高阻尼特性。拟议的研究使用一个数值模拟的示例进行研究，该示例由ACLD处理的板/声腔系统（由点谐波力激发）组成。在这项研究中，采用ACLD处理的板/声腔耦合有限元模型来计算振动板辐射的结构强度和声压。在被动控制中，ACLD贴片的最佳放置取决于ACLD处理过的板的结构强度，并与通过模态应变能方法获得的结果进行比较。研究了阻尼处理对板结构强度的影响。 ！10

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