24 citations · 62 across the 11 of their papers we have counts for
11 papers
A variational approach to effective models for inelastic systems
Ghina Jezdan, Sanjay Govindjee, Klaus Hackl
Given a set of inelastic material models, a microstructure, a macroscopic structural geometry, and a set of boundary conditions, one can in principle always solve the governing equ…
Model-free data-driven inelasticity in Haigh-Westergaard space -- a study how to obtain data points from measurements
Kerem Ciftci, Klaus Hackl
Model-free data-driven computational mechanics, first proposed by Kirchdoerfer and Ortiz, replaces phenomenological models with numerical simulations based on sample data sets in s…
A novel class of electro-mechanical metamaterials for stress reduction through electric fields
Mischa Blaszczyk, Klaus Hackl
While most previous developed metamaterials only consider a single physical effect, we introduce a novel class of electro-mechanical metamaterials, which allows a direct controllab…
Analytical and numerical relaxation results for models in soil mechanics
Florian Behr, Georg Dolzmann, Klaus Hackl +1
A variational model of pressure-dependent plasticity employing a time-incremental setting is introduced. A novel formulation of the dissipation potential allows one to construct th…
Elastic waveform inversion in the frequency domain for an application in mechanized tunneling
Christopher Riedel, Khayal Musayev, Matthias Baitsch +1
The excavation process in mechanized tunneling can be improved by reconnaissance of the geology ahead. A nondestructive exploration can be achieved in means of seismic imaging. A f…
Multiscale modeling of cancellous bone considering full coupling of mechanical, electrical and magnetic effects
Mischa Blaszczyk, Klaus Hackl
Modeling of cancellous bone has important applications in the detection and treatment of fatigue fractures and diseases like osteoporosis. In this paper, we present a fully coupled…
A thermodynamic framework for unified continuum models for the healing of damaged soft biological tissue
Di Zuo, Yiqian He, Stéphane Avril +2
When they are damaged or injured, soft biological tissues are able to self-repair and heal. Mechanics is critical during the healing process, as the damaged extracellular matrix (E…
Model-free Data-Driven simulation of inelastic materials using structured data sets, tangent space information and transition rules
Kerem Ciftci, Klaus Hackl
Model-free data-driven computational mechanics replaces phenomenological constitutive functions by numerical simulations based on data sets of representative samples in stress-stra…
Gradient-enhanced continuum models of healing in damaged soft tissues
Yiqian He, Di Zuo, Klaus Hackl +3
Healing of soft biological tissue is the process of self-recovering or self-repairing the injured or damaged extracellular matrix (ECM). Healing is assumed to be stress-driven, wit…
An efficient adaptive polygonal finite element method for plastic collapse analysis of solids
H. Nguyen-Xuan, Son H. Nguyen, Hyun-Gyu Kim +1
We propose an adaptive polygonal finite element formulation for collapse plastic analysis of solids. The article contributes into four crucial points: 1) Wachspress shape functions…
A canonical rate-independent model of geometrically linear isotropic gradient plasticity with isotropic hardening and plastic spin accounting for the Burgers vector
Francois Ebobisse, Klaus Hackl, Patrizio Neff
In this paper we propose a canonical variational framework for rate-independent phenomenological geometrically linear gradient plasticity with plastic spin. The model combines the…