A finite element model for the analysis of tailored pulse stimulation of boreholes

Swenson, Daniel; Taylor, L.M.

doi:10.1002/nag.1610070408

Cited by 65 publications

(31 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Additionally, the PRM (Pontiroli-Rouquand-Mazars) constitutive model can be used to simulate the behaviour of concrete subjected to severe loadings, uniaxial cyclic loadings or multi-axial loadings [60]. The PRM damage model is coupled to the plasticity model proposed by Krieg [61] and Swenson & Taylor [62]. In this theme issue, the PRM model is used to numerically simulate the penetration process of a rigid projectile striking an ultra-high-performance fibre reinforced concrete structure [23].…”

Section: Modelling and Numerical Methods Dedicated To Brittle Materialsmentioning

confidence: 99%

Brittle materials at high-loading rates: an open area of research

Forquin¹

2017

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

Brittle materials are extensively used in many civil and military applications involving high-strain-rate loadings such as: blasting or percussive drilling of rocks, ballistic impact against ceramic armour or transparent windshields, plastic explosives used to damage or destroy concrete structures, soft or hard impacts against concrete structures and so on. With all of these applications, brittle materials are subjected to intense loadings characterized by medium to extremely high strain rates (few tens to several tens of thousands per second) leading to extreme and/or specific damage modes such as multiple fragmentation, dynamic cracking, pore collapse, shearing, mode II fracturing and/or microplasticity mechanisms in the material. Additionally, brittle materials exhibit complex features such as a strong strain-rate sensitivity and confining pressure sensitivity that justify expending greater research efforts to understand these complex features. Currently, the most popular dynamic testing techniques used for this are based on the use of split Hopkinson pressure bar methodologies and/or plate-impact testing methods. However, these methods do have some critical limitations and drawbacks when used to investigate the behaviour of brittle materials at high loading rates. The present theme issue of Philosophical Transactions A provides an overview of the latest experimental methods and numerical tools that are currently being developed to investigate the behaviour of brittle materials at high loading rates. This article is part of the themed issue ‘Experimental testing and modelling of brittle materials at high strain rates’.

show abstract

Section: Modelling and Numerical Methods Dedicated To Brittle Materialsmentioning

confidence: 99%

Brittle materials at high-loading rates: an open area of research

Forquin¹

2017

Phil. Trans. R. Soc. A.

View full text Add to dashboard Cite

show abstract

“…It may be noted that alternative (discrete) approaches may be followed (Camacho and Ortiz 1996;Mastilovic and Krajcinovic 1999;Ibrahimbegovic and Delaplace 2003). To account for confined damage, the KST model (Krieg 1978;Swenson and Taylor 1983) is coupled with a damage model based upon a fragmentation analysis (Denoual and Hild 2000;2002;Forquin et al 2003).…”

Section: Numerical Analysis Of Damage Induced By Impact In Concretementioning

confidence: 99%

Dynamic Fragmentation of an Ultrahigh-Strength Concrete during Edge-On Impact Tests

Forquin

Hild

2008

J. Eng. Mech.

View full text Add to dashboard Cite

Abstract:To understand and model damage generated during impact by a penetrator of ultra-high strength concrete targets, edge-on impact tests are performed with the so-called Ductal ® concrete, which is unreinforced or reinforced with short fibers. Two edge-on impact configurations are designed with a dynamic confinement system. The first configuration uses aluminum projectiles and allows us to study the dynamic fragmentation that spreads out within the tile without any confined damage close to the impact point. The fragmentation process is composed of numerous oriented millimetric cracks. In the second configuration, steel projectiles are used with a higher impact velocity. Damaged zones are visualized by using an ultra-high speed camera and a sarcophagus configuration designed to prevent the fragments from moving. The post-mortem studies of impacted tiles enable us to observe an intense fragmentation of the targets and confined damage close to the impact point if steel projectiles are used. Simulations are performed with an anisotropic damage model coupled with a concrete plasticity model. Orientation and crack density are compared with postmortem observations.

show abstract

“…The Abaqus/Explicit FE code [39] was selected to benefit from a user subroutine 'Vumat' of the Krieg, Swenson, and Taylor model [40,41]. This model describes the volumetric behaviour by a compaction law and it has been used previously in confined concrete [5,34] for checking the influence of test conditions on the stress and strain field.…”

Section: Influence Of Friction and Interface Productmentioning

confidence: 99%

Relationship Between Mesostructure, Mechanical Behaviour and Damage of Cement Composites Under High-Pressure Confinement

2008

View full text Add to dashboard Cite

This work seeks to determine how the mesostructure of seven types of cement composites containing alumina particles or not controls their deviatoric strength, compaction law, and damage under high-pressure of confinement. First, the method of analysis of quasioedometric compression tests is presented. Accuracy of the method for concrete is discussed by means of numerical simulations. The confined compression tests performed show the effects of adding ceramic aggregates. Furthermore, an application of post-mortem analysis by infiltration technique of each specimen is presented, revealing a highly micro-cracked pattern depending of the mesostructure of these materials. From these observations, a discussion is presented on the influence that the addition of ceramic aggregates exerts on the confined behaviour of these composites. The tests showed a highly beneficial effect of the presence of particles, on both the deviatoric strength and the compaction law of the concretes considered.

show abstract

A finite element model for the analysis of tailored pulse stimulation of boreholes

Cited by 65 publications

References 5 publications

Brittle materials at high-loading rates: an open area of research

Brittle materials at high-loading rates: an open area of research

Dynamic Fragmentation of an Ultrahigh-Strength Concrete during Edge-On Impact Tests

Relationship Between Mesostructure, Mechanical Behaviour and Damage of Cement Composites Under High-Pressure Confinement

Contact Info

Product

Resources

About