工程设计学报2017，Vol.24Issue(5)：530-535,6.DOI:10.3785/j.issn.1006-754X.2017.05.007
可控震源振动器有限元模态分析与试验验证
Finite element modal analysis and experimental verification of vibroseis vibrator
摘要
Abstract
As a core component of the vibroseis, vibrator has a crucial impact on the vibrator output signal quality. In order to accurately understand the modal characteristics of the vibroseis vibrator and figure out the cause of the non-excitation modal, finite element model of vibratorground was developed based on the theory of finite element modal analysis, and the pre-stress modal analysis was carried out by using ANSYS Workbench software. Deformation of vibrator under pre-stress condition, the first six natural frequencies and vibration modes of vibrator were obtained. Finite element analysis showed that the main vibration modes of the vibrator within the actual operating bandwidth were swinging along the long axis and short axis of the baseplate and twisting centered about the piston. Experimental verification was conducted according to the finite element analysis results. The experimental result was consistent with the simulation analysis, which verified the correctness of finite element analysis. Studies show that resonance of vibrator results in non-excitation of swinging and twisting, which is one of the causes of distortion of the vibrator output signal. Research provides theoretical guidance for structural design and field work of vibrator.关键词
振动器/有限元模态分析/试验验证/振动特性Key words
vibrator/finite element modal analysis/experimental verification/vibration characteristics分类
机械制造引用本文复制引用
黄志强,李刚,陶知非,郝磊..可控震源振动器有限元模态分析与试验验证[J].工程设计学报,2017,24(5):530-535,6.基金项目
国家高技术研究发展计划(863计划)资助项目(2012AA061201) （863计划）
