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    Effects of Water Saturation and Loading Condition on Rock Tensile Strength: Insights from Acoustic Emission Analysis

    The tensile strength of rocks is affected by loading conditions, specifically direct and Brazilian tension, as well as water saturation. But the fundamental reasons for the differences between direct tensile s...

    Jun Zhu, Jianhui Deng, Po Ning, Ziguo Fu, Xuankun Li in Rock Mechanics and Rock Engineering (2024)

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    Experimental study on the failure process of water-bearing rock under uniaxial tension based on dominant frequency analysis of acoustic emission

    Water has substantial effects on the tensile failure behavior of rock engineering materials in excavations and underground openings. However, our understanding of the tensile failure process of wet rock and it...

    Jun Zhu, Jianhui Deng, Ronald Y. S. Pak in Bulletin of Engineering Geology and the En… (2023)

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    Article

    Analysis of indentation of a 3m trigonal piezoelectric half-plane under a smooth insulating punch

    This paper analytically investigates the indentation problem of a 3m trigonal piezoelectric half-plane under a frictionless insulating punch for the first time. To this end, the general solutions of the govern...

    Hossein Kharrazi, Ali Khojasteh, Mohammad Rahimian, Ronald Y. S. Pak in Acta Mechanica (2022)

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    Green’s functions for a trigonal piezoelectric half-plane belonging to 3m crystal class

    Piezoelectric materials have a wide range of industrial applications in different branches of engineering due to their electromechanical coupling. So, investigating their responses to either mechanical or elec...

    Hossein Kharrazi, Ali Khojasteh, Mohammad Rahimian in Journal of Engineering Mathematics (2021)

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    Article

    Vertical time-harmonic coupling vibration of an impermeable, rigid, circular plate resting on a finite, poroelastic soil layer

    Studies associated with dynamic plate–medium interactions generally assumed the plate structures to be permeable for the sake of convenience. But the effect and applicability of such an assumption are still un...

    Shi** Zhang, Ronald Y. S. Pak, Junhui Zhang in Acta Geotechnica (2021)

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    Article

    Study on the performance of the micropile-mechanically stabilized earth wall

    The Micropile-Mechanically Stabilized Earth (MSE) wall, specially designed for mountain roads, is proposed to improve the MSE wall local stability, global stability and impact resistance of roadside barriers. ...

    Zhi-chao Zhang, Ronald Y. S. Pak, Yu-min Chen, Han-long Liu in Journal of Mountain Science (2018)

  7. Article

    Centrifuge Characterization of Buried, Explosive-Induced Soil Ejecta Kinematics and Crater Morphology

    A comprehensive experimental regime was conducted to advance the understanding of the mechanistic phenomena of buried, explosive-induced soil responses using geotechnical centrifuge modeling. To address experi...

    Curt Hansen, Ronald Y. S. Pak in Journal of Dynamic Behavior of Materials (2016)

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    Article

    Elastodynamics and Elastostatics by a Unified Method of Potentials for x 3-Convex Domains

    A new general solution in terms of two scalar potential functions for classical elastodynamics of x 3-convex domains is presented. Through the establishment and usage of a set of basic mat...

    Morteza Eskandari-Ghadi, Ronald Y. S. Pak in Journal of Elasticity (2008)