复合QCR系统的非线性多相多场耦合作用及梯度效应分析

An appropriate nonlinear dynamic model on multi-phase and multiple field couplings between a fluid-solid coupling structure and a QCR (Quartz Crystal Resonators) system will be established in the project at first. The interaction laws within the natural time-scales of the fluid-solid coupling structure and the one corresponding to the QCR resonant frequency will be investigated in-depth. The influence characteristics of gradient effects on the multi-field couplings will be clarified, too. Then, the affect mechanism of the physical parameters, morphology, and equivalent mass effect of the fluid-solid coupling structure on the dynamic behaviors of the compound QCR system will be revealed in detail. After analyzing the effect of typical ambient biasing fields on the frequency stability, a QCR experimental device with high sensitivity and good stability will be developed to do a lot experiments for validating the theoretical results. Finally, some identification on physical parameters of the coupling structure will be conducted. .The study of this project is on the key issues in the development of modern compound QCR systems. Such a study will promote further the cross-cutting and merging of mechanics with materials, chemistry, machinery manufacturing, biopharmaceuticals, control engineering and other disciplines. It will also promote the development of new disciplines. In the same time, such a study will play an important role in promoting new product development of piezoelectric acoustic wave devices with QCRs as the cores.

建立恰当的流固耦联结构与QCR(Quartz Crystal Resonators)系统的非线性多相多场耦合动力学模型，深入分析耦联结构固有时间尺度与QCR共振频率所对应的时间尺度之间的耦合作用规律，阐明梯度效应对多场耦合的影响特征，揭示耦联结构的物性参数、形貌特征、等效质量效应等对复合QCR系统动力学行为的影响机制和作用规律。分析典型环境偏场对频率稳定性的影响机理，设计并制作灵敏度高、稳定性好的QCR实验装置，进行实验并验证理论结果，进而实现物性参数辨识。.本项目所研究的是现代复合QCR系统发展所面临的一些关键性问题，开展这样的研究，将会促进力学与材料、化学、机械制造、生物制药、控制工程等学科的进一步交叉和融合，推动新型学科领域的发展，而且还将对以QCR为核心的压电声波器件的新产品开发和应用起到推动作用。

充分考虑表面结构（微梁阵列或球缺状物质单元阵列）的结构特征和尺度效应，建立了表面结构/QCR(Quartz Crystal Resonators)复合系统作厚度剪切振动的多场耦合动力学模型，深入研究了表面加载的振型分布及相位特征等对频率漂移及电导纳谱的影响，阐明了外部加载对QCR的作用从Sauerbrey等效惯性效应逐渐过渡到需要考虑构型效应的变化过程，揭示了物性参数、形貌特征、尺度效应、剪切变形及非线性效应等对复合系统动力学行为的作用机制和影响规律。与此同时，还引入流体环境因素，建立了浸于液体中的QCR复合系统的多相多场耦合振动模型，研究了液体深度、附粘水质量以及表面结构的振型特征等对系统频率漂移的影响规律。.本项目所研究的是现代复合QCR系统发展所面临的一些关键性问题，开展这样的研究，将会促进力学与材料、化学、机械制造、生物制药、控制工程等学科的进一步交叉和融合，推动新型学科领域的发展，而且还将对以QCR为核心的压电声波器件的新产品开发和应用起到推动作用。