Exploiting the potentials of High-Strength-Steels: Damage mechanics approach to describe upper shelf fracture behaviour
Event details
| Date | 25.11.2016 |
| Hour | 12:15 › 13:15 |
| Speaker | Prof. Dr Markus Feldmann, Full Professor at RWTH Aachen University, Aachen, Germany |
| Location | |
| Category | Conferences - Seminars |
In the actual Steel Design Codes, especially for strength oriented cases, ultimate load and fracture are considered as a phenomenon being linked to the material strength fu in engineering model approaches. However, since the material strength fu is primarily the result of the occurrence of plastic instability in tension, it does not sufficiently reflect the damage behaviour of the material. Thus it is necessary to take into account the damage behaviour to predict fracture for stress states that are different from that of pure tension and especially when notches come into play. This situation results into two main shortcomings at present:
1) Relative high scatter in the actual components strength prediction
2) Utilisation potential for new, i.e. High Strength and Ultra High Strength Steels,
at present not used
The presentation therefore outlines in the light of using High Strength Steels:
- a procedure how these obstacles can be overcome and which
approaches are feasible based on damage mechanics
- which parameters do we need and
- how a reduced parameter determination technique can be applied.
Additonally some results on notched tension bars are presented and discussed vis à vis experimental results.
Bio : M. Feldmann got a Civil Engineering degree at RWTH Aachen University, Dipl.-Ing. in 1991. He then went into industry as a Design Engineer for 2 years. At the end of 1992, he came back to RWTH Aachen University as a PhD and got his Doctoral Degree in 1994, with the thesis entitled:
Zur Rotationskapazität von I-Profilen statisch und dynamisch belasteter Träger.
He was then Chief Engineer at the Steel Construction Institute of RWTH Aachen University, 1995-1998 and went again for 3 years in industry.
He was appointed Full Professor for Steel Construction at TU Kaiserslautern, in 2002. Then he was appointed Full Professor at RWTH Aachen University, in 2004/2005.
1) Relative high scatter in the actual components strength prediction
2) Utilisation potential for new, i.e. High Strength and Ultra High Strength Steels,
at present not used
The presentation therefore outlines in the light of using High Strength Steels:
- a procedure how these obstacles can be overcome and which
approaches are feasible based on damage mechanics
- which parameters do we need and
- how a reduced parameter determination technique can be applied.
Additonally some results on notched tension bars are presented and discussed vis à vis experimental results.
Bio : M. Feldmann got a Civil Engineering degree at RWTH Aachen University, Dipl.-Ing. in 1991. He then went into industry as a Design Engineer for 2 years. At the end of 1992, he came back to RWTH Aachen University as a PhD and got his Doctoral Degree in 1994, with the thesis entitled:
Zur Rotationskapazität von I-Profilen statisch und dynamisch belasteter Träger.
He was then Chief Engineer at the Steel Construction Institute of RWTH Aachen University, 1995-1998 and went again for 3 years in industry.
He was appointed Full Professor for Steel Construction at TU Kaiserslautern, in 2002. Then he was appointed Full Professor at RWTH Aachen University, in 2004/2005.
Practical information
- General public
- Free
Organizer
- Prof. Dr Brice Lecampion & Prof. Dr Katrin Beyer
Contact
- Prof. Dr Alain Nussbaumer