By Akhtar S. Khan
The one sleek, updated advent to plasticity regardless of exceptional development in plasticity learn during the last fifty years, introductory books on plasticity have replaced little or no. to satisfy the necessity for an up to date creation to the sector, Akhtar S. Khan and Sujian Huang have written Continuum thought of Plasticity--a really smooth textual content which deals a continuum mechanics procedure in addition to a lucid presentation of the basic classical contributions. The early chapters provide the reader a overview of undemanding thoughts of plasticity, the mandatory history fabric on continuum mechanics, and a dialogue of the classical thought of plasticity. contemporary advancements within the box are then explored in sections at the Mroz Multisurface version, the Dafalias and Popov floor version, the non-linear kinematic hardening version, the endochronic idea of plasticity, and various subject matters in finite deformation plasticity concept and pressure house formula for plastic deformation. ultimate chapters introduce the basics of the micromechanics of plastic deformation and the analytical coupling among deformation of person crystals and macroscopic fabric reaction of the polycrystal combination. For graduate scholars and researchers in engineering mechanics, mechanical, civil, and aerospace engineering, Continuum concept of Plasticity bargains a contemporary, entire advent to the complete topic of plasticity.
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Extra resources for Continuum theory of plasticity
The hat specimen is often used by Meyers [28À31] and Beatty et al. 9). The advantage of the hat-shaped test is that it can be used to produce shear bands even in very ductile materials in a Hopkinson Compression Set-up and that a comparison between small and larger failure strains can be made . Due to the geometry, very high strains at high strain rates can be reached, but the shear-stress measurement is influenced by edge effects. The shear deformability can be measured and assessed. To investigate the microstructure of shear band formation, the displacement of the hat specimen can be limited easily in the axial direction by using stopper rings.
As the result of this test, it can be determined whether or not there is an occurrence of adiabatic shear failure. 22 Dependence of compression/shear stress ratio in a compression/shear specimen at two different locations, according to Meyer and Halle . 23 Influence of inclination of the compression/shear specimen on failure strain performed in a drop-weight test, according to Meyer et al. . 24 Compression stressÀstrain behaviour of two tempering conditions at bi-axial compression/shear test at static and dynamic loading, according to Pursche .
Compression Test The dynamic compression test method is used frequently to test the susceptibility of materials to the occurrence of adiabatic shear failure. Only a simple specimen geometry is necessary, and the results are straightforward for engineers. Test rigs such as the split-Hopkinson pressure bar (SHPB) and the drop-weight tower are common. 18), strain rates of up to 104 s21 are possible by use of small specimens (about 1 mm long). A further assembly can be a gas or electromagnetic gun, which can provide a very high loading velocity, strain rates up to 106 s21 and high pressure.
Continuum theory of plasticity by Akhtar S. Khan