Experimental Study on Impact Force Identification on a Multi-Storey Tower Structure Using Different Transducers
Abstract
:1. Introduction
2. Problem Formulation
2.1. Single Impact Force Reconstruction
- one impact is being applied at a time,
- structural responses are linear,
- the impact location is known.
2.2. Transfer Function
2.3. Impact Force Location
3. Experimental Set-Up
4. Results and Discussion
4.1. Effect of Regularization
4.2. Establishing the Transfer Function
4.3. Influence of Sensor Type and Location
4.4. Impact Force Location
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Conflicts of Interest
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Parameter | Value |
---|---|
Beam length | 2 m |
Beam cross-section | 65.3 × 35 mm |
Beam thickness | 2.5 mm |
Lumped masses dimension | 128× 98 × 50 mm |
Lumped masses weight | 4 kg |
Lumped masses distances | 250 mm |
Impact Location | Measured Response | ||
---|---|---|---|
Vel. at Level 3 | Acc. at Level 3 | Acc. at Level 8 | |
Level 1 | 0.0219 | 0.2448 | 0.0956 |
Level 2 | 0.0141 | 0.0182 | 0.0682 |
Level 3 | 0.0053 | 0.0551 | 0.0323 |
Level 4 | 0.0140 | 0.0342 | 0.0290 |
Level 5 | 0.1644 | 0.0908 | 0.0157 |
Level 6 | 0.5969 | 0.0223 | 0.0157 |
Level 7 | 0.3779 | 0.0518 | 0.0125 |
Level 8 | 0.7738 | 0.3177 | 0.0108 |
Hammer Tip | Impact Location | |||||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
Soft rubber | 0.0974 | 0.0516 | 0.0339 | 0.0576 | 0.0482 | 0.0642 | 0.0563 | 0.0604 |
Medium rubber | 0.0863 | 0.0502 | 0.0590 | 0.0563 | 0.0967 | 0.0902 | 0.1031 | 0.0932 |
Hard rubber | 0.0472 | 0.0239 | 0.0558 | 0.0404 | 0.0558 | 0.3282 | 0.0464 | 0.0421 |
Measured Response | Impact Location | |||||||
---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | |
Vel. at level 3 | 0.9581 | 0.9370 | 0.2522 | 0.9395 | 0.9608 | 1.0389 | 0.9821 | 1.0117 |
Acc. at level 3 | 0.9303 | 0.8922 | 0.4225 | 0.8439 | 0.9145 | 0.9701 | 0.9706 | 0.9883 |
Acc. at level 8 | 1.0055 | 0.9861 | 0.9868 | 1.0233 | 0.9899 | 0.9831 | 0.9164 | 0.1559 |
Vel. at l3 and Acc. at l8 | 1.0093 | 0.9842 | 0.9934 | 1.0149 | 0.9992 | 1.0375 | 0.9067 | 0.1163 |
Acc. at l3 and Acc. at l8 | 0.8947 | 0.8839 | 0.3038 | 0.7664 | 0.8968 | 0.9948 | 0.8844 | 0.0991 |
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Kalhori, H.; Tashakori, S.; Halkon, B. Experimental Study on Impact Force Identification on a Multi-Storey Tower Structure Using Different Transducers. Vibration 2021, 4, 101-116. https://doi.org/10.3390/vibration4010009
Kalhori H, Tashakori S, Halkon B. Experimental Study on Impact Force Identification on a Multi-Storey Tower Structure Using Different Transducers. Vibration. 2021; 4(1):101-116. https://doi.org/10.3390/vibration4010009
Chicago/Turabian StyleKalhori, Hamed, Shabnam Tashakori, and Benjamin Halkon. 2021. "Experimental Study on Impact Force Identification on a Multi-Storey Tower Structure Using Different Transducers" Vibration 4, no. 1: 101-116. https://doi.org/10.3390/vibration4010009