可控震源振动器平板多频响应分析

发布时间：2018-03-22 11:29

本文选题：可控震源　切入点：振动器平板　出处：《工程设计学报》2017年06期 　论文类型：期刊论文

【摘要】：高精度、宽频激发是可控震源的主要发展趋势。在工程应用中,可控震源振动器平板在不同扫描频率下的响应存在差异,导致可控震源在全频段的输出信号精度不一致,难以向宽频拓展,因此有必要开展振动器平板多频响应分析。首先,利用有限单元法,建立了KZ-28型可控震源振动器仿真模型,研究了振动器平板在不同频率下的动力学响应性能,得到了平板加速度、变形和接触力随着频率增加而增大的变化规律。其次,分析发现,平板的刚度不足是导致平板在不同频率下响应存在差异的根本原因,提高平板的刚度可以提升可控震源在全频段的输出信号品质。研究结果将为振动器平板的结构优化提供指导。
[Abstract]:High precision and wide band excitation are the main developing trend of vibroseis. In engineering application, the response of vibroseis plate at different scanning frequencies is different, which leads to the inconsistency of output signal accuracy of vibroseis in the whole frequency range. It is difficult to extend to wide band, so it is necessary to analyze the multi-frequency response of vibrator plate. Firstly, the simulation model of KZ-28 vibroseis is established by using finite element method. The dynamic response of the vibrator plate at different frequencies is studied, and the law of the plate acceleration, deformation and contact force increasing with the increase of the frequency is obtained. Secondly, it is found that the plate acceleration, deformation and contact force increase with the increase of frequency. The lack of stiffness of the plate is the root cause of the difference in the response of the plate at different frequencies. Improving the stiffness of the plate can improve the output signal quality of the vibroseis in the whole frequency band. The research results will provide guidance for the structure optimization of the vibrator plate.
【作者单位】：西南石油大学机电工程学院;
【基金】：国家高技术研究发展计划(863计划)资助项目(2012AA061201)
【分类号】：P631.4

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