Advances in Engineering Plasticity and its Applications by W. B. Lee

By W. B. Lee

Classical plasticity is a good confirmed area of mechanics and engineering, delivering the foundation for lots of engineering structural layout, production techniques and average phenomena. New very important features are rising within the interdisciplinary method of micro-, meso- and macro-mechanics, and during research, experiments and computation.
The interplay of mechanics and fabrics scientists is introducing large alterations within the disciplines, in order that the potential for fabrics being processed at the microscale to accomplish the specified macroscopic houses is speedily approaching.
A accomplished evaluate at the most recent advancements in either macroplasticity and microplasticity theories, their interactions and purposes in numerous engineering disciplines reminiscent of sturdy mechanics, structural research and geo-mechanics, fabrics technology and expertise, and steel forming and machining, is given during this quantity. Case reviews written by means of overseas specialists concentrate on elements comparable to the functions of plasticity in interdisciplinary and non-conventional parts. The one hundred fifty papers offer a present and invaluable reference resource at the newest advances for either learn employees and engineers within the numerous fields of plasticity.

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Ei (,) WW Elastic unloading \A / ' ^ /S^— ^ / / \ ^ 1 ' I N P L loading (p~m) 1 0 /** J 1 r l r 11 Elastic unloading PL loading Fig. 3 Tow-dimensional illustration of proportional and non-proportional pseudoelastic cycles, showing the loading and unloading path dependence of the mate­ rial behavior [15,16]. 4 . ^ - 5 . 8 MPa/°C ~ 08 Q, ^ q 2— 1 7 . 4 The temperature variation of elastic shear modulus a (dotted line) for a TiNi specimen [p, is related to the period of vibration A t of a torsion pendulum by p oc ( A 2 t)"" ] and the corresponding temperature variation of yielding stress above and below T 0 [15,16].

3 Tow-dimensional illustration of proportional and non-proportional pseudoelastic cycles, showing the loading and unloading path dependence of the mate­ rial behavior [15,16]. 4 . ^ - 5 . 8 MPa/°C ~ 08 Q, ^ q 2— 1 7 . 4 The temperature variation of elastic shear modulus a (dotted line) for a TiNi specimen [p, is related to the period of vibration A t of a torsion pendulum by p oc ( A 2 t)"" ] and the corresponding temperature variation of yielding stress above and below T 0 [15,16]. Fig. 5 Tow-dimensional illustration of the second kind of reorientation process acti­ vated by non-proportional loadings at high (a) and low (b) temperatures, respectively.

Since the phenomenological models may not be adequate for describing the material behavior in the post-peak stress range, an extensive study of the relation­ ship between macrospace features and microscopic events has been made in recent years. This will be briefly oudined and some of the state-of-the-art models for strain-softening and strain localization will be reviewed. Against the background of this information, attempts will then be made to develop an elastic-plastic-damage applicative model.

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