Read e-book online Adiabatic Shear Localization PDF

By Yilong Bai

ISBN-10: 0080977812

ISBN-13: 9780080977812

Adiabatic shear localization is a style of failure that happens in dynamic loading. it truly is characterised by way of thermal softening taking place over a really slim sector of a fabric and could be a precursor to ductile fracture and catastrophic failure. This reference resource is the revised and up to date model of the 1st designated examine of the mechanics and modes of adiabatic shear localization in solids. development at the good fortune of the 1st variation, the e-book presents a scientific description of a few features of adiabatic shear banding. The suggestions and strategies defined during this paintings can usefully be utilized to unravel a large number of difficulties encountered via these investigating fracture and harm in fabrics, influence dynamics, steel operating and different parts. particular chapters specialise in full of life fabrics, polymers, bulk steel glasses, and the maths of shear banding in addition to the numerical modeling of them. With its distinctive assurance of the topic, this booklet is of significant curiosity to lecturers and researchers into fabrics functionality in addition to professionals.

  • Up-to-date assurance of the topic and examine that has happened during the last 20 years
  • Each bankruptcy is written on a distinct sub-field of adiabatic shear via an said professional within the field
  • Detailed and transparent discussions of every aspect

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29). The failure mode of such a cylinder can occur by two fracture modes: tensile fracture or fracture by adiabatic shearing. The dominating fracture mode depends on the material properties and on the existing stress distribution in the cylinder. According to Bai and Dodd [8], the stress and strain distributions are not homogeneous at different axial and radial positions in the test cylinder. 27 Contained fragment configuration used in SRI International, according to Wittman et al. [92]. 28 Principle of cylinder expansion test driven by explosive, according to Meyers [93].

However, in the AISI 4340 steel, white etching bands were only found. Bai et al. [20] determined the shear band development for TiÀ6AlÀ4V alloy by means of torsion Hopkinson experiments with prescribed deformation limits. Thus, an investigation of shear band evolution is possible. To obtain a singular deformation of specimen, the Hopkinson assembly was modified so that the specimen was loaded only with the incident pulse. Bassim and Panic [21] conducted dynamic torsion tests on a Hopkinson assembly with a similar specimen geometry to Hwang et al.

The fracture behaviour of this alloy is dominated by adiabatic shearing. Similar investigations were carried out by Lee et al. 7. 7 Torsion specimen, according to Lee et al. [23]. 8 Instrumental Hopkinson bar apparatus to produce white bands in a laboratory, according to Hartmann et al. [26]. Latourte et al. [25] conducted dynamic torsion tests in a Hopkinson bar for a TRIP-120 and a HSLA-100 steel. A torsion specimen similar to that of Duffy and Chi [10] was used. The deformation behaviour could be depicted through photographs, and thus the evolution of shear band formation could be observed.

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Adiabatic Shear Localization by Yilong Bai

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