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The experiments showed agreement with the results determined in Aachen and Lüttich up to the load maximum, for the global sizes as well as for the local measuring of ductility. Because of the different load introduction, lower rotation capacities were determined in the CRM-experiments. This is caused by the fact, that the load introduction used in the tests does not obstruct the rotation of the beam along its longitudinal axis (lateral torsion). The results for the welded profiles show that the increasing solidity clearly causes a decrease in the rotation ability. The comparison of the finite-element-simulation with the programs FINEL G and Abaqus was carried out for the profile geometry mentioned above, for hypothetical steels with strength yield ratios f(u)/f(y) between 1.0 and 1.5. A qualitative agreement between the calculated curves could be achieved. The curves which have been determined by using FINEL G are higher and have consequently led to higher rotation capacities. This difference can be traced back to different modelling in the sector of the flange-web connection and the different pre-imperfections. For future investigations the boundary conditions of the experiments (load introduction) have to be known and to be taken into account in the FEM calculation.

Additional information

Authors: DAHL W, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen (DE);LANGENBERG P, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen (DE);SEDLACEK G, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen (DE);FELDMAN M, Rheinisch-Westfälische Technische Hochschule Aachen, Aachen (DE)
Bibliographic Reference: EUR 16018 DE (1997) 87pp., FS, ECU 15
Availability: Available from the (2)
ISBN: ISBN 92-828-1024-0
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