Modeling of sand particle crushing in split Hopkinson pressure bar tests using the discrete element method

Prabhu, Sudheer; Qiu, Tong

doi:10.1016/j.ijimpeng.2021.103974

Cited by 14 publications

(2 citation statements)

References 43 publications

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“…The dynamic mechanical properties at high strain rate (10 2 -10 4 s −1 ) can be accomplished using the split Hopkinson pressure bar (SHPB); more details about the SHPB can be found in Refs. [36][37][38]. Figure 3 is the illustration of the SHPB.…”

Section: Structure Design and Materialsmentioning

confidence: 99%

Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing Box

Wu,

Chen,

Liu

et al. 2023

Materials

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Based on the lightweight characteristics of automotive energy absorption boxes and the requirement of good energy absorption effect, this article first applies the node-enhanced body centered cubic (NBCC) lattice structure to the inner core design of automotive energy absorption boxes. The gradient study of the NBCC lattice structure was carried out using a drop hammer impact and split Hopkinson pressure bar (SHPB). The results indicate that gradient lattice structures have advantages in energy absorption, but there are differences under different gradient strategies. When the impact is not sufficient to compact the structure, the vertical rod diameter gradient node-enhanced lattice structure (RGNBCC) can absorb more energy and improve energy absorption performance by 25%. The vertical height gradient node-enhanced lattice structure (HGNBCC) is more suitable for high-speed impact conditions. Based on the advantages of the RGNBCC in resisting low-speed impacts, it is applied to the inner core design of automotive energy absorption boxes and optimized using multi-objective optimization methods. The optimization results show that the maximum peak impact force is reduced by 45.6% and the specific energy absorption is increased by 30.4%.

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Section: Structure Design and Materialsmentioning

confidence: 99%

Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing Box

Wu,

Chen,

Liu

et al. 2023

Materials

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show abstract

“…In a unidimensional simulation of compression of soils, d min , which is also called comminution limit, was set proportional to d 50 by using a d min /d 50 of 0.25 [38,39]. Utilizing the same criteria, in a model of a split Hopkinson pressure bar test, a ratio of 0.22 was selected [40]. With this relationship and a feeding size of F50 = 122 mm, the minimum particle size should be d min = 26.84 mm.…”

Section: Materials Parametersmentioning

confidence: 99%

Torque Analysis of a Gyratory Crusher with the Discrete Element Method

et al. 2021

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Comminution by gyratory crusher is the first stage in the size reduction operation in mineral processing. In the copper industry, these machines are widely utilized, and their reliability has become a relevant aspect. In order to optimize the design and to improve the availability of gyratory crushers, it is necessary to calculate their power and torque accurately. The discrete element method (DEM) has been commonly used in several mining applications and is a powerful tool to predict the necessary power required in the operation of mining machines. In this paper, a DEM model was applied to a copper mining gyratory crusher to perform a comprehensive analysis of the loads in the mantle, the crushing torque, and crushing power. A novel polar representation of the radial forces is proposed that may help designers, engineers, and operators to recognize the distribution of force loads on the mantle in an easier and intuitive way. Simulations with different operational conditions are presented and validated through a comparison with nominal data. A calculation procedure for the crushing power of crushers is presented, and recommendations for the selection of the minimum resolved particle size are given.

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Towards Understanding the Adhesion Increasing Effect of Sand in Wheel-Rail Contacts

Six,

Suhr,

Skipper

et al. 2024

Lecture Notes in Mechanical Engineering

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Modeling of sand particle crushing in split Hopkinson pressure bar tests using the discrete element method

Cited by 14 publications

References 43 publications

Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing Box

Study on Dynamic Mechanics of Node-Enhanced Graded Lattice Structure and Application Optimization in Automobile Energy Absorbing Box

Torque Analysis of a Gyratory Crusher with the Discrete Element Method

Towards Understanding the Adhesion Increasing Effect of Sand in Wheel-Rail Contacts

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