By Holm Altenbach, Michael Brünig
This e-book provides experiences at the inelastic habit of fabrics and constructions less than monotonic and cyclic quite a bit. It makes a speciality of the outline of recent results like merely thermal cycles or instances of non-trivial damages. a number of the versions are in line with diverse ways and techniques and scaling features are taken into consideration. as well as merely phenomenological versions, the ebook additionally provides mechanisms-based ways. It comprises contributions written by way of best authors from a number of other countries.
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Additional resources for Inelastic Behavior of Materials and Structures Under Monotonic and Cyclic Loading
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Plastic strain induced transformation from the parent phase (γ ) to the secondary phase (α ), characteristic of meta-stable materials. 2. Evolution of micro-damage (micro-voids and micro-cracks) reflected by decreasing unloading modulus in the course of deformation. A consistent thermodynamic framework has been built in order to describe all dissipative phenomena (plasticity, phase transformation and damage) as well as coupling between them in a unified way. The total material degradation was assumed to be a superposition of the ductile and the brittle parts, with the use of phase transformation variable as a composition factor (weight function).
Plastic strain induced transformation from the parent phase (γ ) to the secondary phase (α ), characteristic of meta-stable materials. 2. Evolution of micro-damage (micro-voids and micro-cracks) reflected by decreasing unloading modulus in the course of deformation. A consistent thermodynamic framework has been built in order to describe all dissipative phenomena (plasticity, phase transformation and damage) as well as coupling between them in a unified way. The total material degradation was assumed to be a superposition of the ductile and the brittle parts, with the use of phase transformation variable as a composition factor (weight function).
22. 24 M. Brünig et al. In addition, experimental results of notched uniaxial specimens are used to determine the hydrostatic stress dependence of the yield condition (1). 000055. Furthermore, onset of damage is determined by comparison of experimental results of tension tests with corresponding elastic-plastic numerical analyses (Brünig et al. 2011b). For the aluminum alloy under investigation the damage threshold appearing in the damage criterion (4) is identified to be σ = 300 MPa. 4 Experiments with Biaxially Loaded Specimens The main purpose of the experimental program is to develop and to propose a set of new tests revealing the effect of stress state on damage and failure in ductile metals.