KZ-28型可控震源振动器平板性能有限元分析
Finite Element Analysis for Dynamic Performances of KZ-28 Vibroseis Vibrator Baseplate

可控震源已成为目前绿色勘探的主要装备，振动器平板是整个装备的核心部件之一，其结构与性能直接影响输出信号品质，是决定油气勘探质量的关键。为研究KZ-28型可控震源振动器平板在动载荷作用下的性能特性，根据有限元分析相关理论，建立振动器-大地模型，利用LS-DYNA软件采用振动器结构安全、平板与大地的互作用机理、平板变形、平板脱耦、平板与大地接触力、平板能量传递率这5个评价指标分析KZ-28型可控震源振动器平板性能。分析表明，平板在动载荷作用下存在弯曲变形，平板与大地的接触力分布很不均匀，并且平板与大地会发生脱耦。
Vibroseis has become the current main equipment for oil and gas green exploration. The vibrator baseplate, one of the core parts of the vibroseis, is the key to exploration, whose structure and performance directly affect the quality of the output signal. In order to study the performances of KZ-28 vibroseis vibrator baseplate under dynamic loads, the vibrator-ground model was established according to the theory of finite element analysis. These five evaluation indicators, safety of the vibrator structural, interaction between the baseplate and the ground, deformation of the baseplate, decoupling of the baseplate, contact force between the baseplate and the ground, and baseplate energy transfer rate were analyzed by using LS-DYNA software to study the performance of the baseplate. The analysis result shows the baseplate under dynamic loads exists bending, the contact force distribution is very uneven, and the baseplate and the ground happens "decoupling"