Pendulum Impact Hammer Tests on Spruce Glued Laminated Timber – Preliminary Results
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Date
2022
Publication Type
Conference Paper
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yes
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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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Publication status
published
Book title
Proceedings of the Fourteenth International Conference on Computational Structures Technology
Journal / series
Volume
CCC 3
Pages / Article No.
15.2
Publisher
Civil-Comp Press
Event
14th International Conference on Computational Structures Technology (CST 2022)
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Date created
Subject
Impact loading; Glued laminated timber; Timber; Pendulum impact hammer; Experiments; Disproportionate collapse; Structural robustness; Tall timber buildings
Organisational unit
08809 - Frangi, Andrea (Tit.-Prof.)
Notes
Conference lecture held on August 24, 2022
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