Details
| Original language | English |
|---|---|
| Pages (from-to) | 405-417 |
| Number of pages | 13 |
| Journal | Journal of sound and vibration |
| Volume | 308 |
| Issue number | 3-5 |
| Publication status | Published - 4 Dec 2007 |
| Externally published | Yes |
Abstract
This work deals with a novel piezoelectrically driven vibro-impact drilling tool which is designed to drill holes and take rock samples in NASA's future space missions. The drilling device consists of an ultrasonic transducer with a piezoelectric stack, a free flying mass and a drill stem. Excited by the high-frequency vibration of the transducer the free mass oscillates between the horn tip of the transducer and the drill stem. The shock waves in the drill stem caused by the impacts with the free mass affect hard and brittle materials so effectively that small holes can be performed with extremely low additional downforce and low power consumption. This paper provides measurements with a modified actuator which show an irregular motion of the free mass. For further optimization two model approaches are investigated: the finite element method and a discrete lumped parameter model. Each model is capable of predicting actuator's parts motion similar to measurements.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Condensed Matter Physics
- Engineering(all)
- Mechanics of Materials
- Physics and Astronomy(all)
- Acoustics and Ultrasonics
- Engineering(all)
- Mechanical Engineering
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In: Journal of sound and vibration, Vol. 308, No. 3-5, 04.12.2007, p. 405-417.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Modelling approaches for an ultrasonic percussion drill
AU - Potthast, C.
AU - Twiefel, J.
AU - Wallaschek, J.
N1 - Copyright: Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2007/12/4
Y1 - 2007/12/4
N2 - This work deals with a novel piezoelectrically driven vibro-impact drilling tool which is designed to drill holes and take rock samples in NASA's future space missions. The drilling device consists of an ultrasonic transducer with a piezoelectric stack, a free flying mass and a drill stem. Excited by the high-frequency vibration of the transducer the free mass oscillates between the horn tip of the transducer and the drill stem. The shock waves in the drill stem caused by the impacts with the free mass affect hard and brittle materials so effectively that small holes can be performed with extremely low additional downforce and low power consumption. This paper provides measurements with a modified actuator which show an irregular motion of the free mass. For further optimization two model approaches are investigated: the finite element method and a discrete lumped parameter model. Each model is capable of predicting actuator's parts motion similar to measurements.
AB - This work deals with a novel piezoelectrically driven vibro-impact drilling tool which is designed to drill holes and take rock samples in NASA's future space missions. The drilling device consists of an ultrasonic transducer with a piezoelectric stack, a free flying mass and a drill stem. Excited by the high-frequency vibration of the transducer the free mass oscillates between the horn tip of the transducer and the drill stem. The shock waves in the drill stem caused by the impacts with the free mass affect hard and brittle materials so effectively that small holes can be performed with extremely low additional downforce and low power consumption. This paper provides measurements with a modified actuator which show an irregular motion of the free mass. For further optimization two model approaches are investigated: the finite element method and a discrete lumped parameter model. Each model is capable of predicting actuator's parts motion similar to measurements.
UR - http://www.scopus.com/inward/record.url?scp=34748917954&partnerID=8YFLogxK
U2 - 10.1016/j.jsv.2007.03.045
DO - 10.1016/j.jsv.2007.03.045
M3 - Article
AN - SCOPUS:34748917954
VL - 308
SP - 405
EP - 417
JO - Journal of sound and vibration
JF - Journal of sound and vibration
SN - 0022-460X
IS - 3-5
ER -