Numerical simulation of the compaction effect and the dynamic response of an oscillation roller based on a hypoplastic soil model

Paulmichl, Ivan; Furtmüller, Thomas; Adam, Christoph; Adam, Dietmar

doi:10.1016/j.soildyn.2020.106057

Cited by 21 publications

(12 citation statements)

References 17 publications

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“…Model Verification. In the roller model developed in this paper, the frame inertia is considered for the first time, which is the major innovation when compared to the roller models proposed in earlier studies [17,22,26]. To illustrate the effect of frame inertia, the classical problem of roller-soil compaction was resolved based on these two roller models, respectively.…”

Section: New Model Of Vibratory Rollermentioning

confidence: 99%

“…us, the smaller particles must be avoided. In addition, Zhang [34] has also reported that the effect of the minimum particle on the macroproperties of rockfill Analytical solution [32] This paper Early studies [17,22,26] Analytical solution [32] This paper Early studies [17,22,26] Shock and Vibration assembly can be acceptable when the size ratio reaches 4. us, the rockfill particles smaller than 40 mm were truncated in this paper, and the size ratio of rockfill particles reached about 20. When the rockfill particles smaller than 40 mm were truncated, the PSD of rockfill pavement model in this paper was a little different from that of field rockfill, as shown in Figure 11.…”

Section: Discrete Model Based On the Field Experiments In Casementioning

confidence: 99%

“…When modeling the vibratory roller compaction of rockfill materials, it should also replicate the vibratory roller as true as possible. Among the present investigations on vibratory roller compaction of granular materials, the vibratory roller was usually modeled as a rigid plate [24,25], or single drum [17,22,26], in which the frame inertia was always ignored due to the assumption that any effect on the drum due to the frame inertia was negligible. However, Mooney and Rinehart [12] have emphasized that this assumption is satisfactory for single drum roller, where the ratio of the drum to the frame mass is typically between 1.5 and 2, but it is less valid for tandem rollers, where the ratio of the drum mass to the frame mass can be lower.…”

Section: Introductionmentioning

confidence: 99%

“…Numerical models for the soil-roller compaction. (a) e roller model in this paper; (b) the roller model in early studies[17,22,26].…”

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confidence: 99%

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Discrete Simulation of Vibratory Roller Compaction of Field Rockfills

Cheng-xue

2021

Shock and Vibration

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Vibratory roller compaction is a well-known method in improving the mechanical properties of field rockfills. However, the meso mechanism of rockfill densification under vibratory roller compaction has not been understood clearly. This paper presents a discrete numerical method to simulate the vibratory roller compaction of field rockfills. Firstly, rockfill particles were modeled by irregular and stochastic clusters, which can be breakable. In addition, the segregation of field rockfills was replicated in a practical manner. Then, a new model of the vibratory roller was presented, in which the frame inertia was considered. Finally, the developed method was applied to simulate the vibratory roller compaction of field rockfills in the Shui Buya Project. Results show that (1) the numerical simulations of vibratory roller compaction of field rockfills agree well with the field experiments; thus, the feasibility and rationality of the developed simulation method are verified; (2) the dynamic response of field rockfills under vibratory roller compaction can be predicted by the presented numerical method with calibrated model and parameters; (3) the new roller model with frame inertia considered is much more accurate than the roller models in early studies. Thus, the developed discrete numerical method can be further adopted to explore the meso mechanism of rockfill densification under vibratory roller compaction in the future.

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Section: New Model Of Vibratory Rollermentioning

confidence: 99%

Section: Discrete Model Based On the Field Experiments In Casementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Numerical models for the soil-roller compaction. (a) e roller model in this paper; (b) the roller model in early studies[17,22,26].…”

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confidence: 99%

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Discrete Simulation of Vibratory Roller Compaction of Field Rockfills

Cheng-xue

2021

Shock and Vibration

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“…Modelling the interaction between a rigid cylinder and multiphase porous media has several applications such as enhancement of the pipe installation methods and the compaction processes by using static, vibratory, and oscillatory drums [23,19].…”

Section: Introductionmentioning

confidence: 99%

Elastoplastic indentation of unsaturated soils using a rigid cylinder

Ghorbani¹,

Kodikara²

2021

9th Edition of the International Conference on Computational Methods for Coupled Problems in Science and Engineering

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We develop a fully coupled finite element solution for elastoplastic indentations of unsaturated granular soils by a rigid cylinder by using a mortar-type contact algorithm. In the presented solution, we have employed an advanced constitutive model that allows the inclusion of the effect of matric suction and induced anisotropy in the problem. Several numerical examples in both static and dynamic scenarios are provided for validation and demonstrating the capabilities of the presented framework.

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