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A.S. Cao, M. Lolli, A. Frangi, "Pendulum Impact Hammer Tests on Spruce Glued Laminated Timber - Preliminary Results", in B.H.V. Topping, J. Kruis, (Editors), "Proceedings of the Fourteenth International Conference on Computational Structures Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 3, Paper 15.2, 2022, doi:10.4203/ccc.3.15.2

Keywords: impact loading, GLT, timber, pendulum impact hammer, experiments, disproportionate collapse, structural robustness, tall timber buildings.

Abstract

In this paper, preliminary results are presented on pendulum impact hammer tests on full-scale glued laminated timber specimens with dimensions 200x200x3600 mm for the first time. For the tests, a pendulum with an effective mass of 3500 kg and length 4700 mm was built. The pendulum was instrumented with a high-speed camera, angular encoder, optical position-tracking system, and accelerometers. By considering potential energies and the damping in the system, the material toughness was determined to be between 327 and 534 kJ/m2. The maximum impact forces were determined from the deceleration of the pendulum during impact and were between 3565 and 4106 kN. The failure time was determined qualitatively from high-speed imagery to be between 10.18 and 11.58 ms. The dissipated energy is roughly equivalent to the kinetic energy of a 500 kg projectile traveling at 30 km/h.

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Front Page Browse CCC CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Conferences ISSN 2753-3239 CCC: 3 PROCEEDINGS OF THE FOURTEENTH INTERNATIONAL CONFERENCE ON COMPUTATIONAL STRUCTURES TECHNOLOGY Edited by: B.H.V. Topping and J. Kruis Paper 15.2 Pendulum Impact Hammer Tests on Spruce Glued Laminated Timber - Preliminary Results A.S. Cao, M. Lolli and A. Frangi Institute of Structural Engineering, ETH Zurich, Switzerland doi:10.4203/ccc.3.15.2 Full Bibliographic Reference for this paper A.S. Cao, M. Lolli, A. Frangi, "Pendulum Impact Hammer Tests on Spruce Glued Laminated Timber - Preliminary Results", in B.H.V. Topping, J. Kruis, (Editors), "Proceedings of the Fourteenth International Conference on Computational Structures Technology", Civil-Comp Press, Edinburgh, UK, Online volume: CCC 3, Paper 15.2, 2022, doi:10.4203/ccc.3.15.2 Keywords: impact loading, GLT, timber, pendulum impact hammer, experiments, disproportionate collapse, structural robustness, tall timber buildings. Abstract In this paper, preliminary results are presented on pendulum impact hammer tests on full-scale glued laminated timber specimens with dimensions 200x200x3600 mm for the first time. For the tests, a pendulum with an effective mass of 3500 kg and length 4700 mm was built. The pendulum was instrumented with a high-speed camera, angular encoder, optical position-tracking system, and accelerometers. By considering potential energies and the damping in the system, the material toughness was determined to be between 327 and 534 kJ/m2. The maximum impact forces were determined from the deceleration of the pendulum during impact and were between 3565 and 4106 kN. The failure time was determined qualitatively from high-speed imagery to be between 10.18 and 11.58 ms. The dissipated energy is roughly equivalent to the kinetic energy of a 500 kg projectile traveling at 30 km/h. download the full-text of this paper (PDF, 8 pages, 760 Kb) go to the previous paper go to the next paper return to the table of contents return to the volume description
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