Effect of different forms on geogrid tensile properties based on 3D printing technology

Gao, Junli; Yan, Yang; Zhang, Haibing; Xie, Zhongfa

doi:10.1177/08927057221123474

Cited by 5 publications

(2 citation statements)

References 36 publications

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“…As the filling rate increases, the increase rate of decreases, although all the geogrid tensile performance parameters are enhanced (Figure 5). Therefore, the ExpDec1 function model 47 was chosen to perform curve regression of the filling rate-tension performance parameters. In addition, the curve of the rib width (rib height)-elongation at break curve and the rib width (rib height)-maximum elastic modulus curve (Figure 5) are also similar to the filling rate tension performance parameter curves, so the ExpDec1 function model is also selected for the regression analysis of these four curves in this paper.…”

Section: Regression Analysismentioning

confidence: 99%

Analysis of tensile properties of geogrids for different morphology parameters

Gao

Zhu

2023

Journal of Thermoplastic Composite Materials

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Following the emergence of new morphology geogrids, tensile tests on some of the new morphology geogrids were conducted in this paper for practical engineering options. The study focuses on the tensile testing of 3D printed geogrids to analyze the effects of morphology differences (material, planar structure, filling rate, rib width and rib height) on the tensile properties of geogrids. The test results show that the tensile properties of high density polyethylene geogrids are stronger than those of polylactic acid geogrids. Increasing the filling rate of geogrid can increase the tensile performance while decreasing the rate of tensile performance improvement. In contrast to the elongation at the break of the geogrid, the maximum tensile strength and the maximum tensile modulus increase in the order of bidirectional, triaxial and quadaxial geogrids. When the rib width and the rib height increase by the same amount, the rib height increases the maximum tensile strength of the geogrid more than that of the rib width.

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Section: Regression Analysismentioning

confidence: 99%

Analysis of tensile properties of geogrids for different morphology parameters

Gao

Zhu

2023

Journal of Thermoplastic Composite Materials

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“…Liang et al [18] proposed a trilinear shear stress-displacement damage softening model for a unidirectional geogrid-soil interface based on the results of pullout tests. Gao et al [19] fabricated uniaxial, d biaxial, and triaxial polylactic acid geogrids based on 3D-printing technology, and investigated the mechanical properties of these grids through an indoor pullout test. There is little research literature on four-way geogrids.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Cyclic Shear Performance of the Four-Way Geogrid Reinforcement–Soil Interface

Zhang,

Ruan,

Jiang

2024

Applied Sciences

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This paper presents the results of horizontal cyclic direct shear tests at the reinforced soil interface of a four-way polypropylene geogrid reinforced sandy soil. The influence of normal stress and shear displacement amplitude on the shear stress, shear stiffness, and damping ratio of the reinforced soil interface are evaluated by varying the normal stress and shear displacement amplitude. Dynamic shear characteristics of reinforced soil interface under normal constant load were investigated by using a large dynamic straight shear apparatus. Peak interface strength increases with increasing amplitude of normal stress and shear displacement amplitude. The larger the normal stress and shear displacement amplitude, the fewer cycles are needed to attain peak interface strength. At low-magnitude normal stress levels, the peak shear stress and shear stiffness tend to stabilize after an initial increase during the cycling process, and the damping ratio decreases and then stabilizes with the increase in the number of cycles; whereas when the normal stress level is high, the peak shear stress and shear stiffness increase and then decrease during the cycling process and eventually stabilize, and the damping ratio decreases and then increases and finally stabilizes with the increase in the number of cycles. Moreover, under the same number of cycles, the corresponding shear stiffness decreases with an increase in shear displacement amplitude, while the damping ratio increases.

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Interfacial characterization of soil-3D printing materials

Fadaie,

Mehravar,

Webb

2024

E3S Web of Conf.

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3D printing has emerged as a revolutionary technique for producing products with specific shapes and mechanical properties tailored to various needs. Its ability to fabricate intricate structures and forms has garnered considerable attention, leading to numerous research efforts exploring its potential benefits in geotechnical applications. These endeavours highlight the possibilities of utilizing 3D printing technology to create innovative and customized materials for soil reinforcement, such as geosynthetics, and fibres, as well as replicating soil particles, physical models of soil structures, and drainage systems in geo-structures. Additionally, beyond its role in geotechnical engineering, the interaction between geo-structures (foundations, retaining walls, embankments, tunnels, piles, infrastructures, etc.) and the surrounding soil under different loading and environmental conditions is of paramount importance. The interface between these structures and the soil plays a critical role in load transfer and overall stability. Therefore, this study focuses on investigating the interface between soil and 3D printed components through direct shear testing. The experimental campaign aims to examine how different factors, including the type of 3D printing materials, material rigidity, and surface texture of the printed components, influence the shear behaviour of the soil-3D printing material interface. The findings suggest that Young’s modulus of the 3D printed materials plays a crucial role in determining the response of the soil-3D printed parts interface. Furthermore, an optimized design is proposed to achieve the desired shearing resistance at the interface. The insights gained from this investigation have practical implications for optimizing the design of 3D-printed components in geotechnical engineering applications.

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Effect of different forms on geogrid tensile properties based on 3D printing technology

Cited by 5 publications

References 36 publications

Analysis of tensile properties of geogrids for different morphology parameters

Analysis of tensile properties of geogrids for different morphology parameters

Experimental Study on Cyclic Shear Performance of the Four-Way Geogrid Reinforcement–Soil Interface

Interfacial characterization of soil-3D printing materials

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