Naslov
Energy dissipation analysis in localized strain softening plasticity and damage models

Autori
Nikolić, Mijo ; Čarija, Jadran ; Ibrahimbegovic, Adnan ; Nikolić, Željana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
XV International Conference on Computational Plasticity. Fundamentals and Applications / Oñate, E ; Owen DRJ ; Peric D ; Chiumenti M ; de Souza Neto E - Barcelona, 2019

ISBN
978-84-949194-7-3

Skup
XV International Conference on Computational Plasticity: Fundamentals and Applications (COMPLAS 2019)

Mjesto i datum
Barcelona, Španjolska, 03.09.2019. - 05.09.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Lattice element method ; Damage, plasticity, softening

Sažetak
The failure mechanisms in various materials are followed by the strain softening behavior. In this work we show how is the total input work introduced into the system by external loads converted to other energy forms. More precisely, we show how to compute amount of kinetic energy, strain energy, plastic free energy and dissipated energy in strain softening materials from softening plasticity and damage constitutive laws. The presented softening constitutive laws are implemented with embedded strong discontinuities so that no mesh dependence is observed in the failure patterns or energy dissipation analysis. Computation of energetic components and dissipation is presented with lattice model that is capable of representing complex failure mechanisms, multiple cracks branching or merging in statics or high speed dynamics [1, 2]. The proposed lattice model is based on Voronoi representation of the domain and cohesive links with enhanced kinematics including the Heaviside function for discontinuity representation.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Temeljne tehničke znanosti

POVEZANOST RADA