Forced Vertical Vibration of Circular Plate in Multilayered Poroelastic Medium

Senjuntichai, Teerapong; Sapsathiarn, Y.

doi:10.1061/(asce)0733-9399(2003)129:11(1330)

Cited by 59 publications

(23 citation statements)

References 32 publications

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“…This implies that the load is carried by both solid and fluid phases at higher frequency, whereas at low frequency, the load transfer takes place through the solid skeleton. Similar behavior was also observed for the load transfer mechanism of a circular plate in a poroelastic medium [Zeng and Rajapakse 1999;Senjuntichai and Sapsathiarn 2003]. Figure 10 shows nondimensional central displacement w * st (0) of an impermeable flexible strip foundation (γ = 1.0) on different poroelastic systems.…”

Section: Numerical Results and Discussionsupporting

confidence: 68%

Dynamic response of multiple flexible strips on a multilayered poroelastic half-plane

Senjuntichai

Kaewjuea

2008

JOMMS

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We study the dynamic response of multiple flexible strip foundations resting on a multilayered poroelastic half-plane subjected to time-harmonic vertical loading. The contact surface between the strip foundations and the half-plane is assumed to be smooth and either fully permeable or impermeable. The half-plane under consideration consists of a number of layers with different thicknesses and material properties, and is governed by Biot's poroelastodynamic theory. The vertical deflection of the strip foundation is represented by an admissible function containing a set of generalized coordinates. Solutions for generalized coordinates are obtained by establishing the equations of motion of the foundation through the application of Lagrange's equations of motion. Selected numerical results are presented to demonstrate the influence of foundation rigidity, hydraulic boundary conditions, layer properties and configuration, and distance of adjacent foundations on dynamic interaction between flexible strip foundations and a multilayered poroelastic half-plane.

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Section: Numerical Results and Discussionsupporting

confidence: 68%

Dynamic response of multiple flexible strips on a multilayered poroelastic half-plane

Senjuntichai

Kaewjuea

2008

JOMMS

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“…Zeng and Rajapakse [27] solved the problem of the vertical vibrations of a rigid circular plate embedded in a poroelastic half space by employing Hankel transform. The forced vertical vibrations of an elastic circular plate embedded in a multi-layered poroelastic half space were solved by Senjuntichai and Sapsathiarn [28].…”

Section: Introductionmentioning

confidence: 99%

Vertical dynamic response of a rigid foundation embedded in a poroelastic soil layer

Cai

et al. 2008

Num Anal Meth Geomechanics

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SUMMARYA simplified analytical method is presented for the vertical dynamic analysis of a rigid, massive, cylindrical foundation embedded in a poroelastic soil layer. The foundation is subjected to a time-harmonic vertical loading and is perfectly bonded to the surrounding soil in the vertical direction. The soil underlying the foundation base is represented by a single-layered poroelastic soil based on rigid bedrock while the soil at the side of the foundation is modeled as an independent poroelastic layer composed of a series of infinitesimally thin layers. The behavior of the soil is governed by Biot's poroelastodynamic theory and its governing equations are solved by the use of Hankel integral transform. The contact surface between the foundation base and the soil is smooth and fully permeable. The dynamic interaction problem is solved following standard numerical procedures. The accuracy of the present solution is verified by comparisons with the well-known solutions obtained from other approaches for both the elastodynamic interaction problem and poroelastodynamic interaction problem. Numerical results for the vertical dynamic impedance and response factor of the foundation are presented to demonstrate the influence of nondimensional frequency of excitation, soil layer thickness, poroelastic material parameters, depth ratio and mass ratio on the dynamic response of a rigid foundation embedded in a poroelastic soil layer.

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“…Cai [41] studied the steady response of axisymmetric soil under vertical load, and developed the amplitude curve of surface displacement. On the basis of these fundamental solutions, the dynamic interaction between saturated soil and various types of foundations has also been extensively studied [42][43][44]. Lamb's problem has been extensively studied internationally, and significant progress has been made.…”

Section: Lamb's Problemmentioning

confidence: 99%

Roller-Integrated Acoustic Wave Detection Technique for Rockfill Materials

Zhang

Liu

2017

Applied Sciences

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This paper proposes a roller-integrated acoustic wave detection technique for rockfill materials. This technique can be divided into two parts: theoretical analysis and technical implementation. Based on Lamb's problem and an infinite baffle piston radiation acoustic field model, a relationship model between the sound compaction value (SCV) and the dry density of the natural gravel materials (NGM) was established, namely, A-model. During the modeling process, an innovative differential pulse excitation method (DPEM) was used to find the numerical solution of the vertical displacement of the soil surface under harmonic loads. In this research, a continuous compaction control acoustic wave detection system (CAWDS) was developed and utilized along with real-time kinematic global positioning systems (RTK-GPS). The SCV was adopted as a characterization index for the compaction quality of rockfill materials. A case study on a reservoir project in Luoyang, China indicated that the SCV is highly linearly correlated with the number of compaction times, dry density, and compactness of the NGM. This new technique demonstrated several advantages, such as higher accuracy, discreetness, convenience, and suitability for detecting the compactness of the NGM. This technique is an effective tool for compaction quality control of rockfill materials and has a great potential for further applications.

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Forced Vertical Vibration of Circular Plate in Multilayered Poroelastic Medium

Cited by 59 publications

References 32 publications

Dynamic response of multiple flexible strips on a multilayered poroelastic half-plane

Dynamic response of multiple flexible strips on a multilayered poroelastic half-plane

Vertical dynamic response of a rigid foundation embedded in a poroelastic soil layer

Roller-Integrated Acoustic Wave Detection Technique for Rockfill Materials

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