Refine
Year of publication
- 2024 (2)
- 2023 (1)
- 2022 (9)
- 2021 (6)
- 2020 (8)
- 2019 (13)
- 2018 (17)
- 2017 (10)
- 2016 (15)
- 2015 (9)
- 2014 (4)
- 2013 (8)
- 2012 (14)
- 2011 (1)
- 2010 (6)
- 2009 (2)
- 2008 (5)
- 2007 (4)
- 2006 (1)
- 2005 (2)
- 2004 (3)
- 2003 (6)
- 2002 (3)
- 2000 (4)
- 1999 (2)
- 1998 (1)
- 1997 (2)
- 1996 (2)
- 1995 (1)
- 1993 (3)
- 1992 (1)
- 1991 (2)
- 1990 (1)
- 1989 (1)
- 1988 (1)
- 1987 (2)
- 1985 (1)
Document Type
- Article (117)
- Conference Proceeding (31)
- Part of a Book (13)
- Book (4)
- Other (3)
- Report (2)
- Doctoral Thesis (1)
- Patent (1)
- Review (1)
Has Fulltext
- no (173) (remove)
Keywords
- Biocomposites (2)
- Limit analysis (2)
- Natural fibres (2)
- Polymer-matrix composites (2)
- Shakedown analysis (2)
- Stress concentrations (2)
- damage (2)
- Anastomotic leakage (1)
- Autolysis (1)
- Bladder (1)
- Bone sawing (1)
- Cardiac myocytes (1)
- Cardiac tissue (1)
- CellDrum (1)
- Chance constrained programming (1)
- Collagen fibrils (1)
- Computational biomechanics (1)
- Connective tissues (1)
- Constitutive model (1)
- Damage mechanics theory (1)
Limit Analysis of Defects
(2000)
Numerical methods for limit and shakedown analysis. Deterministic and probabilistic problems.
(2003)
System und Verfahren zur Durchführung von Messungen biaxialer und kreuzförmiger Zugversuche, wobei ein Weg oder eine Kraft auf eine Materialprobe über mindestens zwei Nadelarme mit Nadeln geleitet wird, die in einem Gehäuse gelagert sind, wobei die Arme und/oder Nadelarme für eine ungehinderte Querkontraktion bei gleichmäßiger Lasteinleitung um eine Achse drehbar gelagert und seitlich auslenkbar sind.
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.