Implementation of Johnson-Holmquist-Beissel model in four-dimensional lattice spring model and its application in projectile penetration

Ma, Jianjun; Chen, Junjie; Guan, Junwei; Lin, Yuexiang; Chen, Wanxiang; Huang, Linchong

doi:10.1016/j.ijimpeng.2022.104340

Cited by 36 publications

(25 citation statements)

References 52 publications

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“…In these two simulations in Figure 3 b, the particle diameter is 41

m, the impact velocity is 650 m/s, and the numerical techniques are Coupled Eulerian–Lagrangian (CEL) for Cu/Cu and Arbitrary Lagrangian–Eulerian (ALE) for Al/B

C. The trend of the average PEEQ over B

C particle using the JHB model is analogous to that of the average PEEQ over the Cu particle using the modified JC model with SGP, demonstrating the consistency between the modified JC with the SGP effect and the JHB material model. This is attributed to the inclusion of the plastic strain rate effect in these two models, which is more representative of dynamic impact loading cases [ 83 , 84 , 85 ]. Figure 3 b also shows that the B

C deformation rate in the Al/B

C coating is higher than the Cu deformation rate in the Cu/Cu coating, which can be attributed to different particle types and material models.…”

Section: Resultsmentioning

confidence: 99%

Impact Deposition Behavior of Al/B4C Cold-Sprayed Composite Coatings: Understanding the Role of Porosity on Particle Retention

2023

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This study explores the role of porosity in the impact deposition of a ceramic-reinforced metal-matrix (i.e., Al/B4C) composite coating fabricated via cold spraying. The Johnson–Holmquist–Beissel constitutive law and the modified Gurson–Tvergaard–Needleman model were used to describe the high strain-rate behavior of the boron carbide and the aluminum metal matrix during impact deposition, respectively. Within a finite element model framework, the Arbitrary Lagrangian–Eulerian technique is implemented to explore the roles of reinforcement particle size and velocity, and pore size and depth in particle retention by examining the post-impact crater morphology, penetration depth, and localized plastic deformation of the aluminum substrate. Results reveal that some degree of matrix porosity may improve particle retention. In particular, porosity near the surface facilitates particle retention at lower impact velocities, while kinetic energy dominates particle retention at higher deposition velocities. Altogether, these results provide insights into the effect of deposition variables (i.e., particle size, impact velocity, pore size, and pore depth) on particle retention that improves coating quality.

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“…In these two simulations in Figure 3 b, the particle diameter is 41

m, the impact velocity is 650 m/s, and the numerical techniques are Coupled Eulerian–Lagrangian (CEL) for Cu/Cu and Arbitrary Lagrangian–Eulerian (ALE) for Al/B

C. The trend of the average PEEQ over B

C deformation rate in the Al/B

C coating is higher than the Cu deformation rate in the Cu/Cu coating, which can be attributed to different particle types and material models.…”

Section: Resultsmentioning

confidence: 99%

Impact Deposition Behavior of Al/B4C Cold-Sprayed Composite Coatings: Understanding the Role of Porosity on Particle Retention

2023

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“…Te U-shaped steel support is a kind of roadway support with mature technology. After nearly 90 years of development, scholars at home and abroad have carried out a lot of studies on the existing problems of U-shaped steel support and put forward many improvement measures, such as the fact that the supporting performance of U-shaped steel support can be efectively improved by adding prestressed anchor cable, structural compensation for weak links of support, back-wall flling or back-wall grouting, and leg-lock support for dangerous section positions [14][15][16][17][18][19][20]. Trough numerical simulation and feld industrial experiments, Xie et al proposed to increase the bearing capacity and antideformation capacity of U-shaped steel supports through the anchoring of anchor cables, so as to realize the overall bearing capacity of U-shaped steel supports [15].…”

Section: Introductionmentioning

confidence: 99%

“…At the same time, the thermoelastoplastic coupled damage model of concrete under dynamic load is established, a more general shock load equation of state (GEOS) is used to represent the strain-average pressure, and the micromechanical constitutive model parameters of the fourdimensional spring model (4D-LSM) are determined. It is applied to simulate and analyze the instantaneous deformation failure of U-shaped steel under diferent initial impact velocities [16][17][18]. Wang et al established a mechanical model of the U-shaped steel support and surrounding rock-bearing capacity and proposed the reinforcement support method of anchor cable with a longitudinal steel belt beam in the middle of the shed leg, shoulder socket, and middle of the arch beam [20].…”

Section: Introductionmentioning

confidence: 99%

Analysis of U-Shaped Steel Failure Characteristics in Rock Burst Roadway and Design of Stable Structure and Constant Resistance O-Shed

Zhang

Guo

et al. 2023

Advances in Civil Engineering

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The U-shaped steel support has good surface protection and is one of the main supporting forms of the roadway under rock bursts. However, in the supporting process of roadways under rock burst, there are poor mechanical properties of lap joints, resulting in a serious decline in the anti-impact performance of U-shaped steel supports. Using a combination of laboratory experiments and theoretical analysis, we study the sliding mechanism of the U-shaped steel bracket’s overlap section bearing and find the key factors affecting the sliding performance of the overlap section. The characteristics of deformation and failure of U-shaped steel supports under impact loads are analyzed by numerical calculations. An improved method for optimizing the sliding performance of the lap section is proposed to provide theoretical support for the design of stable and constant-resistance energy-absorbing O-shed supports. The research results show that the frictional properties between the contact surfaces of the overlapped sections, especially the frictional properties between the contact surfaces of the clamp and the U-shaped steel, determine the sliding characteristics of the U-shaped steel overlapped sections, which are the key factors affecting the bearing capacity of the support. The single-point maximum bearing capacity of the U-shaped steel bracket under the uniformly distributed impact load is basically close to the maximum bearing capacity of the U-shaped steel bracket under the concentrated impact load. When the U-shaped steel bracket is uniformly loaded, its bearing capacity can be increased several times. When a gasket is added between the U-section steel and the clamping bolt in the lap section, the bearing capacity changes smoothly during the sliding process, which greatly improves the friction performance between the contact surfaces, and can greatly improve the overall bearing capacity, energy absorption, and anti-impact performance of the support structure. Based on this, a stable and constant energy-absorption O-type shed structure for the impacted underground roadway in Laohutai Mine was proposed. The field application proved that improving the sliding performance at the joint of the U-shaped steel support can effectively control the deformation of the roadway under the impact load.

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“…A large number of scholars have carried out research work on theoretical aspects of rock masses and numerical simulations [2][3][4][5][6][7]. Te inversion method using a combination of actual measurements and numerical calculations is one of the efective methods to obtain the mechanical parameters of the surrounding rocks.…”

Section: Introductionmentioning

confidence: 99%

Inversion Study of Mechanical Parameters of Tunnel Surrounding Rock Based on Similar Test

Wang

Cui

et al. 2023

Advances in Civil Engineering

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Based on similar model tests and finite element simulations, inversion study of the mechanical parameters of the tunnel surrounding rock by combining artificial fish swarm algorithm (AFSA) and digital scattering correlation method is carried out. The inversion of the mechanical parameters of the tunnel surrounding rock is carried out by iterating the optimization algorithm to minimize the objective function value through similar model test with the displacement measurements obtained by the digital scattering correlation method as the known quantity and the nodal displacement simulation values obtained by numerical simulation as the unknown quantity. The results show the following: (1) The new research idea proposed in this paper is effective and feasible and can perform the inversion calculation of the parameters of the soft and weak tunnel surrounding rock. (2) Through the inversion calculation, the parameters related to the surrounding rock show a wave-like change: the parameters increase in the initial and final compaction stages due to the small deformation rate of the tunnel and decrease in the continuous loading stage due to the increasing deformation rate of the tunnel. (3) The displacement field calculated by DSCM in the test is basically the same as the displacement distribution characteristics of the numerical simulation displacement cloud map, and the error of nodal displacement value is within 3%.

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Implementation of Johnson-Holmquist-Beissel model in four-dimensional lattice spring model and its application in projectile penetration

Cited by 36 publications

References 52 publications

Impact Deposition Behavior of Al/B4C Cold-Sprayed Composite Coatings: Understanding the Role of Porosity on Particle Retention

Impact Deposition Behavior of Al/B4C Cold-Sprayed Composite Coatings: Understanding the Role of Porosity on Particle Retention

Analysis of U-Shaped Steel Failure Characteristics in Rock Burst Roadway and Design of Stable Structure and Constant Resistance O-Shed

Inversion Study of Mechanical Parameters of Tunnel Surrounding Rock Based on Similar Test

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