Refine
Year of publication
- 2022 (27) (remove)
Institute
- IfB - Institut für Bioengineering (27) (remove)
Has Fulltext
- no (27)
Language
- English (27) (remove)
Document Type
- Article (22)
- Part of a Book (2)
- Conference Proceeding (2)
- Other (1)
Keywords
- Biocomposites (2)
- Natural fibres (2)
- Polymer-matrix composites (2)
- Stress concentrations (2)
- damage (2)
- Alzheimer's disease (1)
- Biomechanical simulation (1)
- Cementoblast (1)
- Chance constrained programming (1)
- Compression (1)
- ES-FEM (1)
- Evolution of damage (1)
- Extension fracture (1)
- Extension strain criterion (1)
- FGF23 (1)
- FS-FEM (1)
- Finite element analysis (1)
- Finite element analysis (FEA) (1)
- Forces (1)
- Fracture configuration (1)
- Fracture simulation (1)
- Haemodialysis (1)
- Handbike (1)
- Interstellar objects (1)
- Klotho (1)
- Limit analysis (1)
- Machine learning (1)
- Mechanotransduction (1)
- Microcirculation (1)
- Mild cognitive impairment (1)
- Missions (1)
- Mohr–Coulomb criterion (1)
- Myocardial infarction and cardiac death (1)
- Niacin (1)
- PTH (1)
- Paralympic sport (1)
- Phosphate (1)
- Proximal humerus fracture (1)
- Pulsations (1)
- Reliability of structures (1)
- Retinal vessel analysis (1)
- Retinal vessels (1)
- Riboflavin (1)
- Rotator cuff (1)
- S-FEM (1)
- Shakedown analysis (1)
- Stochastic programming (1)
- Tension (1)
- Thiamine (1)
- Trajectories (1)
- Vasomotions (1)
- Vitamin A (1)
- Vitamin B (1)
- Vitamin D (1)
- adipose-derived stromal cells (ASCs) (1)
- anaesthetic complications (1)
- anisotropy (1)
- aortic perfusion (1)
- bacterial cellulose (1)
- biaxial tensile experiment (1)
- biopotential electrodes (1)
- cell aerosolization (1)
- cell atomization (1)
- cerebral small vessel disease (1)
- chance constrained programming (1)
- coculture (1)
- cognitive impairment (1)
- computational fluid dynamics analysis (1)
- constitutive modeling (1)
- correlation (1)
- dental trauma (1)
- dialysis (1)
- difficult airway (1)
- distorted element (1)
- double-lumen tube intubation (1)
- endoluminal (1)
- exopolysaccharides (1)
- extracorporeal membrane oxygenation (1)
- force generation (1)
- forehead EEG (1)
- high-intensity exercise (1)
- hyperelastic (1)
- impedance spectroscopy (1)
- in-ear EEG (1)
- limit analysis (1)
- muscle fascicle behavior (1)
- non-simplex S-FEM elements (1)
- performance testing (1)
- prebiotic (1)
- pullulan (1)
- reliability of structures (1)
- retinal vessels (1)
- sEMG (1)
- shakedown analysis (1)
- simulation (1)
- smooth muscle contraction (1)
- stochastic programming (1)
- strain energy function (1)
- survival (1)
- tendon rupture (1)
- tri-lineage differentiation (1)
- twin-fluid atomizer (1)
- ultrasound imaging (1)
- videolaryngoscopy (1)
- virgin passive (1)
- viscoelasticity (1)
- walking gait (1)
When confining pressure is low or absent, extensional fractures are typical, with fractures occurring on unloaded planes in rock. These “paradox” fractures can be explained by a phenomenological extension strain failure criterion. In the past, a simple empirical criterion for fracture initiation in brittle rock has been developed. But this criterion makes unrealistic strength predictions in biaxial compression and tension. A new extension strain criterion overcomes this limitation by adding a weighted principal shear component. The weight is chosen, such that the enriched extension strain criterion represents the same failure surface as the Mohr–Coulomb (MC) criterion. Thus, the MC criterion has been derived as an extension strain criterion predicting failure modes, which are unexpected in the understanding of the failure of cohesive-frictional materials. In progressive damage of rock, the most likely fracture direction is orthogonal to the maximum extension strain. The enriched extension strain criterion is proposed as a threshold surface for crack initiation CI and crack damage CD and as a failure surface at peak P. Examples show that the enriched extension strain criterion predicts much lower volumes of damaged rock mass compared to the simple extension strain criterion.