Modeling finite thickness slab perforation using a coupled Eulerian–Lagrangian approach

Sherburn, Jesse A.; Hammons, Michael I.; Roth, Michael

doi:10.1016/j.ijsolstr.2014.09.007

Cited by 10 publications

(7 citation statements)

References 22 publications

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“…The AFC model has been applied to several investigations involving the simulation of projectiles into cementitious materials. For a more in‐depth discussion, the details of the model can be found in the literature (Adley et al, Sherburn et al, Nordendale et al, Chandler et al).…”

Section: Validation Studymentioning

confidence: 99%

“…Kala and Hušek, and Nordendale et al used smooth particle hydrodynamics (SPH) to model projectile impact of concrete targets with striking velocities of 500 and 1077 m/s, respectively. Chen et al, Chi et al, and Sherburn et al modeled concrete perforation problems utilizing reproducing kernel particle methods (RKPM). RKPM serves as a correction to SPH; the methodology does not need to employ complex numerical erosion of elements to SPH particles as seen in hybrid FEM and SPH methods, where material separation can naturally be captured during large deformation events.…”

Section: Introductionmentioning

confidence: 99%

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Penetration modeling of ultra‐high performance concrete using multiscale meshfree methods

Sparks

Sherburn

Heard

et al. 2019

Num Anal Meth Geomechanics

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Summary Terminal ballistics of concrete is of extreme importance to the military and civil communities. Over the past few decades, ultra‐high performance concrete (UHPC) has been developed for various applications in the design of protective structures because UHPC has an enhanced ballistic resistance over conventional strength concrete. Developing predictive numerical models of UHPC subjected to penetration is critical in understanding the material's enhanced performance. This study employs the advanced fundamental concrete (AFC) model, and it will run inside the reproducing kernel particle method (RKPM)‐based code known as the nonlinear meshfree analysis program (NMAP). NMAP is advantageous for modeling impact and penetration problems that exhibit extreme deformation and material fragmentation. A comprehensive experimental study was conducted to characterize the UHPC. The investigation consisted of fracture toughness testing, the utilization of nondestructive microcomputed tomography analysis, and lastly projectile penetration shots on the UHPC targets. To improve the accuracy of the model, a new scaled damage evolution law (SDEL) is employed within the microcrack informed damage model. During the homogenized macroscopic calculation, the corresponding microscopic cell needs to be dimensionally equivalent to the mesh dimension when the partial differential equation becomes ill posed and strain softening ensues. To ensure arbitrary mesh geometry for which the homogenized stress‐strain curves are derived, a size scaling law is incorporated into the homogenized tensile damage evolution law. This ensures energy‐bridging equivalence of the microscopic cell to the homogenized medium irrespective of arbitrary mesh geometry. Results of numerical investigations will be compared with results of penetration experiments.

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Section: Validation Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Penetration modeling of ultra‐high performance concrete using multiscale meshfree methods

Sparks

Sherburn

Heard

et al. 2019

Num Anal Meth Geomechanics

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“…The model was designed for modeling the dynamic response of concrete under high-rate loading conditions. A number of studies have shown that the AFC model can be applied to a large range of penetration type scenarios (Sherburn et al 2014;Sherburn et al 2015;Nordendale et al 2016). The AFC model used in this study follows the approach of Sherburn et al (2014) and Sherburn et al (2015), which includes the MIDM tensile damage evolution function described in Section 4.1.…”

Section: Macroscale Calculationmentioning

confidence: 99%

A multiscale meshfree approach to modeling damage of Cor-Tuf without fibers using fracture energy experiments

Sherburn¹,

Heard²,

Williams³

et al. 2019

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Many continuum damage mechanics models for cementitious materials are typically phenomenological in design. Recent work has shown that a physics-based multiscale approach to modeling damage is efficient and effective. In order to use a multiscale approach, appropriate experimental data are necessary to model the microscale calculations that will then inform the continuum-scale calculations. This work uses the multiscale approach and experimentally determines the parameters necessary to model the microscale calculations. Notched three-point beam experiments were performed to determine the fracture energy of the ultra-high performance concrete known as Cor-Tuf. The fracture energy is then used by a simplified microscale calculation to determine a physics-based damage evolution equation that can be used in continuum-scale calculations. A meshfree method is used to show the usefulness of the newly determined damage evolution equation. Both a quasi-static application and a dynamic application are shown as examples. DISCLAIMER: The contents of this report are not to be used for advertising, publication, or promotional purposes. Citation of trade names does not constitute an official endorsement or approval of the use of such commercial products. All product names and trademarks cited are the property of their respective owners. The findings of this report are not to be construed as an official Department of the Army position unless so designated by other authorized documents.

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“…They usually exhibit pressure hardening and strain hardening under static loading and strain rate hardening in tension and compression under dynamic loading. A number of material models has been developed to model concrete-like materials recently [11][12][13][14][15][16]. Among them, the KCC model is widely used to analyse concrete-like materials' response to blast and impact loading due to its simple implementation.…”

Section: Review On Kcc Modelmentioning

confidence: 99%

“…Thus, a robust material model should be developed to consider the strain rate effect, strain hardening, strain softening and damage of the AC material under the severe dynamic loading. Recently, several concrete-like material models subjected to dynamic loadings have been developed, such as the Riedel-Hiermaier-Thoma (RHT) model [11], the Advanced Fundamental Concrete (AFC) model [12,13], the Karagozian and Case concrete model (KCC) [14] and the Holmquist-Johnson-Cook (HJC) concrete model [15,16]. These robust material models are capable of capturing varying concrete-like materials' behaviour under different loading conditions.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study on the Asphalt Concrete Structure for Blast and Impact Load Using the Karagozian and Case Concrete Model

et al. 2017

Applied Sciences

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Abstract:The behaviour of an asphalt concrete structure subjected to severe loading, such as blast and impact loadings, is becoming critical for safety and anti-terrorist reasons. With the development of high-speed computational capabilities, it is possible to carry out the numerical simulation of an asphalt concrete structure subjected to blast or impact loading. In the simulation, the constitutive model plays a key role as the model defines the essential physical mechanisms of the material under different stress and loading conditions. In this paper, the key features of the Karagozian and Case concrete model (KCC) adopted in LSDYNA are evaluated and discussed. The formulations of the strength surfaces and the damage factor in the KCC model are verified. Both static and dynamic tests are used to determine the parameters of asphalt concrete in the KCC model. The modified damage factor is proposed to represent the higher failure strain that can improve the simulation of the behaviour of AC material. Furthermore, a series test of the asphalt concrete structure subjected to blast and impact loadings is conducted and simulated by using the KCC model. The simulation results are then compared with those from both field and laboratory tests. The results show that the use of the KCC model to simulate asphalt concrete structures can reproduce similar results as the field and laboratory test.

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Modeling finite thickness slab perforation using a coupled Eulerian–Lagrangian approach

Cited by 10 publications

References 22 publications

Penetration modeling of ultra‐high performance concrete using multiscale meshfree methods

Penetration modeling of ultra‐high performance concrete using multiscale meshfree methods

A multiscale meshfree approach to modeling damage of Cor-Tuf without fibers using fracture energy experiments

Numerical Study on the Asphalt Concrete Structure for Blast and Impact Load Using the Karagozian and Case Concrete Model

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