Study of Influence of Superimposed Hydrostatic Pressure on Ductility in Ring Compression Test

Partovi, Amir; Shahzamanian, M. M.; Wu, Peidong

doi:10.1007/s11665-020-05114-z

Cited by 11 publications

(10 citation statements)

References 25 publications

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“…As reported in Ref. [20], increasing the element ratio (height/width ratio > 1) does not lead to a proper deformation pattern of under compression rings. Therefore, square elements are considered in this study.…”

Section: Resultsmentioning

confidence: 63%

“…The configuration setup in ABAQUS is validated by comparing the simulation of a model and an existing result from the experiment [35] (Figure 4). The simulation of the fracture mechanism of monolithic material rings was verified in a previous work [20], where the numerical results were validated with the experimental results of Gang et al [36].…”

Section: Resultsmentioning

confidence: 65%

“…The following descriptions of the schematic of the ring are provided in Ref. [20]. In brief, the ring has an outer diameter (OD) of 18 mm, inner diameter (ID) of 9 mm, and height (H) of 6 mm, which is in accordance with a ratio of 6:3:2 (OD:ID:H) that is known as the standard ratio for the geometry.…”

Section: Problem Formulation and Methods Of Solutionmentioning

confidence: 99%

“…An explanation could be that the location of the crack initiation remains at the corner of the outer wall in all the laminated cases similar to the case of the compressed ring made of a monolithic material, as obtained in Refs. [20,36], and that there is no change in the direction of the crack propagation path. In this section, in order to investigate the effect of material properties on crack initiation and propagation path, two completely different materials are used in the FE simulations.…”

Section: Crack Initiation and Propagationmentioning

confidence: 99%

“…Causing a delay in necking can hinder the occurrence of a fracture and consequently enhance the ductility of the material under compression. Therefore, by employing some practical techniques, such as applying hydrostatic pressure on the specimen or coating a ductile material on the base material, and by controlling stress, the triaxiality, barreling and fracture of the material can be postponed [20,21]. When a ring is compressed and its height is decreased, the material can flow radially towards inner and outer surfaces.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Strain Rate Sensitivity on Fracture of Laminated Rings under Dynamic Compressive Loading

Partovi

Shahzamanian

2022

Materials

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The effects of cladding layers of rate-sensitive materials on the ductility and fracture strain of compressed rings are numerically investigated by using the finite element method (FEM) and employing the Johnson–Cook (J–C) model. The results show that ductility is governed by the behavior of the material that is located at the ring outer wall regardless of the volume fraction of the core and clad materials. However, as the number of layers increases, this influence becomes less noticeable. Moreover, as barreling increases at the outer wall and decreases at the inner wall, fracture strain increases. Furthermore, the effects of ring shape factor and bonding type of clad and core materials are numerically evaluated. The numerical results show that less force per unit volume is required to fracture narrower rings and that using a noise diffusion pattern at the interface of the materials is more suitable to simulate crack propagation in the compressed rings and functionally graded materials (FGMs). Additionally, delamination has a direct relation to layer thickness and can occur even in the presence of perfect bonding conditions owing to differences among the material and fracture parameters of laminated layers.

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Section: Resultsmentioning

confidence: 63%

Section: Resultsmentioning

confidence: 65%

Section: Problem Formulation and Methods Of Solutionmentioning

confidence: 99%

Section: Crack Initiation and Propagationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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