Xun Peng , Jiale Sun , Yu Li , Zhicai Teng , Lei Hao
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引用次数: 0
Abstract
Shear-wave seismic vibrators have attracted increasing interest owing to their high efficiency, environmental friendliness, and safety. However, there are challenges in modeling the shear-wave vibrator-ground coupled system and in mastering its dynamics during the vibration process, which limits their practical operations. To address these issues, a reasonable shear-wave vibrator-ground coupled system dynamics model is proposed for the first time in this paper. The motion equations of the shear-wave vibrator-ground coupled system are derived, and the equivalent stiffness of the vibrator baseplate-soil interaction considering the triangular prism-shaped plate teeth is obtained innovatively based on the potential energy theory. Finite element (FE) simulation is utilized to verify the effectiveness of the presented theoretical calculation method. To reveal the shear-wave vibrator-ground coupled system dynamics, the modal frequencies, the harmonic response, and the dynamic characteristics under the sweep excitation of the coupled system are solved and investigated. In addition, the comprehensive effects of the structural parameters of the shear-wave vibrator on the coupled system dynamics are evaluated and identified utilizing the theoretical model. The results indicate that the proposed theoretical model can reveal the vibration characteristics of the shear-wave vibrator-ground coupled system, and the baseplates structure has great influences on the coupled system dynamics. This work could lay theoretical foundations for designing, optimizing, and controlling shear-wave vibrators.
期刊介绍：
The International Journal of Mechanical Sciences (IJMS) serves as a global platform for the publication and dissemination of original research that contributes to a deeper scientific understanding of the fundamental disciplines within mechanical, civil, and material engineering.
The primary focus of IJMS is to showcase innovative and ground-breaking work that utilizes analytical and computational modeling techniques, such as Finite Element Method (FEM), Boundary Element Method (BEM), and mesh-free methods, among others. These modeling methods are applied to diverse fields including rigid-body mechanics (e.g., dynamics, vibration, stability), structural mechanics, metal forming, advanced materials (e.g., metals, composites, cellular, smart) behavior and applications, impact mechanics, strain localization, and other nonlinear effects (e.g., large deflections, plasticity, fracture).
Additionally, IJMS covers the realms of fluid mechanics (both external and internal flows), tribology, thermodynamics, and materials processing. These subjects collectively form the core of the journal's content.
In summary, IJMS provides a prestigious platform for researchers to present their original contributions, shedding light on analytical and computational modeling methods in various areas of mechanical engineering, as well as exploring the behavior and application of advanced materials, fluid mechanics, thermodynamics, and materials processing.
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