A model for the vibrator–ground coupling vibration and the dynamic responses under excitation of sweep signal

G Li, ZQ Huang, ZH Lian, L Hao - Advances in Structural …, 2019 - journals.sagepub.com
To analyze the behavior of the vibrator–ground coupling vibration, a model containing
equivalent dynamic stiffness and equivalent dynamic dam** to describe the interaction …

The construction of a simple portable electromagnetic vibrator from commercially available components

T Dean, H Nguyen, A Kepic, D Halliday - Geophysical Prospecting, 2019 - earthdoc.org
Since its introduction in the late 1950s, hydraulic vibrators have become the dominant
source for land seismic surveys. The hydraulic vibrators typically used for commercial land …

On the mechanical vibrator-earth contact geometry and its dynamics

R Noorlandt, G Drijkoningen - Geophysics, 2016 - library.seg.org
The geometry of the contact between a vibrator and the earth underneath influences the
dynamics of the vibrator. Although a vibrator might appear to be well-coupled with the earth …

Modeling of energy transfer and parameter effects on it of a vibrator-ground system

G Li, W Qi, Z Huang, Z Tao, G Li… - Advances in Structural …, 2020 - journals.sagepub.com
The amount of energy transferred to the ground truly represents the performance of the
seismic vibrator. So, it is crucial to investigate the transfer of energy in the vibrator-ground …

Effects and global sensitivity analysis of vibrator-ground coupling parameters on ground force under excitation of sweep frequency

G Li, G Xu, Y Ding, Z Huang, L He, J Yao - Structures, 2022 - Elsevier
Ground force is the key index to evaluate the output of the seismic vibrator. To generate
desired ground force, the relationship between coupling parameters and ground force …

Modal characteristics and phase response of vibrator under excitation of sweep frequency

G Li, W Qi, Z Huang, Z Tao - Advances in Mechanical …, 2020 - journals.sagepub.com
To analyze the dynamic responses of vibrator, a vibrator-ground coupling vibration model
considering sweep frequency is proposed based on half-space theory, and modal …

[HTML][HTML] Study on dynamics of vibrator baseplate at low and high frequencies

Z Huang, G Li, L Hao - Journal of Vibroengineering, 2017 - extrica.com
In order to figure out the dynamics response of vibrator baseplate and why baseplate
performs poorly at high frequencies, a finite element model of vibrator-ground is developed …

Ground force analysis of a portable electromagnetic seismic vibrator for different surface environments and driving voltages

Y Chen, J Lin, Y Jiang, X **ng - Geophysical Prospecting, 2023 - earthdoc.org
Knowing the actual ground force is important for seismic data processing and seismic
vibrator control. However, the weighted‐sum method is widely used to estimate the actual …

WSGF—Time for a change part 1: Damped Harmonic Oscillators and the Vibrator/Ground model

SL Rowse, RG Heath - First Break, 2020 - earthdoc.org
In land seismic exploration a vibrator is used to generate a controlled wave-train of seismic
energy into the earth by the forced oscillations of the ground surface over several seconds in …

Controlling the transmitted signal with a new vibrator-ground coupling relationship

Z Wei - SEG International Exposition and Annual Meeting, 2017 - onepetro.org
It is very challenging to acquire broadband data on land when using the Vibroseis source.
Broadband seismic data are affected by the variable interaction between the vibrator …