taylor cylinder impact test|the taylor impact experiment pdf : exporter Taylor cylinder impact testing provides a simple, yet robust approach for subjecting a single specimen to a wide range of strain rates across its length 11. In these, well .
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High-speed photographic sequence of a polymer cylinder undergoing classic Taylor impact from right to left. Two high-speed photographic sequences are presented of (A) the .
Taylor cylinder impact testing is used to validate anisotropic elastoplastic constitutive modelling by comparing polycrystal computed yield–surface shapes (topography) .
impact test such that the compression loading is always applied along the 3-axis (i.e., the specimen centerline). The Taylor specimens were tested at Eglin Air Force Base producing . The method, now known as the Taylor impact test, consists of firing a solid cylinder against a massive rigid target. The dynamic flow stress of the cylinder material is . A linked dislocation-crystal- polycrystal-component-scale model for high-strain-rate deformation is presented. A new procedure for treating rate-sensitive flow of polycrystals . Taylor cylinder impact testing provides a simple, yet robust approach for subjecting a single specimen to a wide range of strain rates across its length 11. In these, well .
the taylor impact experiment pdf
The Taylor impact test (Taylor (86)) was originally devised as a means of determin- ing the dynamic yield strength of solids. The test involves the impact of a flat-nosed cylindrical.
The impact of a flat-ended cylindrical rod onto a rigid stationary anvil, often known as the Taylor impact test, is studied. An axisymmetric model is developed to capture the deformation behaviour of the rod after impact.Taylor cylinder impact testing is used to validate anisotropic elastoplastic tive modelling by comparing polycrystal-computed yield-surface shapes with measured shapes from post-test .
Taylor cylinder impact testing (Taylor 1948; Lee Sz Tupper 1954; Hawkyard 1969; Wilson et al. 1989; Maudlin et al. 1997, 1999) has been used to validate consti? tutive modelling in the presence of gradients of stress, strain and strain rate that this integrated test affords. For example, an investigation of plastic wave propaga- Taylor cylinder impact testing is used to validate anisotropic elastoplastic constitutive modelling by comparing polycrystal computed yield–surface shapes (topography) with measured shapes from post–test Taylor specimens and quasi–static compression specimens. Measured yield–surface shapes are extracted from the experimental post–test .
taylor impact test plasticity model
The Taylor impact test is widely and actively used for various materials such as metals [5], polymers [6,7], and glasses [8]. Additionally, the targets of the test are expanded to a calibration of .
The Taylor impact test (Taylor (86)) was originally devised as a means of determin- ing the dynamic yield strength of solids. The test involves the impact of a flat-nosed cylindrical projectile on . Taylor impact tests using specimens cut from a rolled plate of Ta were conducted. The Ta was well-characterized in terms of flow stress and crystallographic texture.2. Taylor cylinder impact testing Consider a plate of tantalum (Cabot material, received from NSWC, White Oak Detachment) having the material (or sample) coordinate system shown in Fig. 1 (axes 10 20 30 ) where 10 is transverse to the rolling direction, 20 corresponds to the rolling direction and 30 is through-thickness.A coupled thermomechanical analysis of the Taylor impact test considering flat-ended cylindrical specimens of different materials fired at several striking velocities is presented. To this end, a large strain rate-dependent thermoelasto–plasticity model is used to define the constitutive relationships appearing in the momentum and energy equations both solved in the context of .
taylor impact test
An improved description of copper‐ and iron‐cylinder impact (Taylor) test results has been obtained through the use of dislocation‐mechanics‐based constitutive relations in the Lagrangian . Elastic viscoplastic anisotropic modelling of textured metals and validation using the Taylor cylinder impact test. Int. J. Plast., 23 (2007), pp. 1001-1021. View in Scopus Google Scholar. Revil-Baudard, 2010. Revil-Baudard B., 2010. Simulation of the Mechanical Response of Titanium Alloys for Cold Forming (Ph.D. thesis). Ecole Nationale .
The elastic-viscoplastic extension of the model is then used to simulate Taylor cylinder impact test results for the same material. We conclude with an application of the model to bcc materials performing the analysis of the Taylor cylinder impact test on pre-textured tantalum. It is shown that the model describes with accuracy the striking .A comprehensive experimental study of strain rate effects on the deformation of high-purity, polycrystalline α-titanium plate is presented. Monotonic uniaxial compression and tension tests were carried out at room temperature under quasi-static conditions to quantify the plastic anisotropy and the tension-compression symmetry of the material.
Taylor Impact Test and Penetration of Reinforced Concrete Targets by Cylindrical Composite Rods by Wesley D. Ballew . The method, now known as the Taylor impact test, consists of firing a solid cylinder against a massive rigid target. The dynamic flow stress of the cylinder material is estimated from the deformed shape of the cylinder. Taylor .
The Taylor impact test was originally designed to calculate the dynamic yield strength of a cylindrical specimen, taking into account the residual length of the specimen after impact onto a non . This paper examines the usefulness of cylinder‐impact test data to determine constants for various computational constitutive models. The Johnson–Cook and Zerilli–Armstrong constitutive models are evaluated by comparing model predictions to tension, torsion, and cylinder‐impact test data. The impact facility at LANL along with the details of its operation as well as the utility of Taylor cylinder testing was described in Maudlin et al., 1999Maudlin et al., , 2003Vasilev et al . Taylor cylinder impact test has been initially proposed as a potential testing technique to measure dynamic effect on material yield strength. Today, this technique represents an interesting benchmark case for constitutive and damage model performance verification. In this study, an extensive numerical investigation, using both finite element .
Myszka et al. [10] analyzed several grades of ADI, austempered at different temperatures, using Taylor's cylinder impact test, with the attempt to determine the effect of dynamic load on the .This paper examines the usefulness of cylinder‐impact test data to determine constants for various computational constitutive models. The Johnson–Cook and Zerilli–Armstrong constitutive models are evaluated by comparing model predictions to tension, torsion, and cylinder‐impact test data. Then the cylinder‐impact test data are used to determine constitutive model . To study the evolution of texture, anisotropy, and twinning response with straining at high rates, a series of Taylor cylinder impact tests are conducted. Taylor cylinder specimens were machined from the rolled WE43 plate such that the cylinder axis aligned either with RD, TD, ND, or in-plane 45 ∘ from the RD, of the plate. The length of the .DOI: 10.1016/J.IJPLAS.2016.05.005 Corpus ID: 137950147; Transitioning rate sensitivities across multiple length scales: Microstructure-property relationships in the Taylor cylinder impact test on zirconium
Taylor cylinder impact test conducted to support the present work is depicted in Fig. 1. It is conceptually quite simple, involving the impact of a right circular cylinder onto the hardened . The T aylor cylinder impact test conducted to supp ort the present work is depicted in Fig. 1. It is conceptu ally quite simple, inv olving the impact of a right circular cylinde r
Request PDF | Elastic-viscoplastic anisotropic modeling of textured metals and validation using the Taylor cylinder impact test | An elastic-viscoplastic model for describing the anisotropic high .
The calibrated model was applied to simulate previous Taylor cylinder impact experiments. Our results show that the model must include slip on {110} and {112} planes and also account for the twinning versus anti-twinning sense of slip on {112} planes, to appropriately represent the orientation dependence of the flow stress and match the .ing the analysis of the Taylor cylinder impact test on pre-textured tantalum. It is shown that the model describes with accuracy the striking difference between the geometries of the post-test specimens of zirconium and tantalum. 2. Anisotropic elastic-viscoplastic model Our objective is to develop a macroscopic anisotropic model that . 4. Schematic representation of Taylor test deformation. load is independent of impact velocity, although for low velocities, where the projectile did not deform plastically, it was found that the maximum load was reduced and there was a much shorter contact time. EMPIRICAL ANALYSIS A schematic of a deformed Taylor test cylinder is shown in Fig. 4.
High-rate material modelling and validation using the Taylor cylinder impact test. Philos Trans R Soc Lond A (1999) View more references. Cited by (12) A DIC-based Taylor impact test by measuring inertia force from acceleration distribution to obtain uniaxial stress–strain behavior of pure aluminum.
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taylor cylinder impact test|the taylor impact experiment pdf