Experimental Friction and Temperature Investigation on Aircraft Tires

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Tim Patrick Max Linke
  • Matthias Wangenheim
  • H. Lind
  • Stefan Ripka
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Details

OriginalspracheEnglisch
Seiten (von - bis)116-144
Seitenumfang29
FachzeitschriftTire Science and Technology
Jahrgang42
Ausgabenummer3
PublikationsstatusVeröffentlicht - Juli 2014

Abstract

For modeling an aircraft tire using the brush model method, the friction coefficient m between rubber and asphalt should not only be described in terms of the applied pressure and sliding velocity/slip ratio, but also by local temperature inside the contact area. Its influence cannot be neglected, since it leads to significant material property changes. Therefore, investigations on different test rigs are analyzed using thermal recordings of an infrared camera. First measurements are done on a high speed linear tester (HiLiTe), a test rig at the Institute of Dynamics and Vibration Research (IDS) at Leibniz University Hanover, Germany. It allows testing single tread block samples with a constant slip ratio of 100%, that is, pure sliding, on a variety of surfaces such as dry and wet asphalt or concrete, as well as on snow and ice. Results in this paper show that the convection has a smaller impact on tread block cooling than the actual contact between runway surface and sample. Since colder surface temperatures lead to higher friction, this effect antagonizes the excitation frequency, which heats up the rubber sample at high velocities. On long-lasting test sequences a quasi–steadystate friction coefficient might be achieved once these effects start to converge. Still, owing to permanent slip, the abrasion leads to cooling as the hot top layer of the rubber is removed occasionally. In addition to these quasi–steady-state measurements on HiLiTe, the thermal behavior of an aircraft tire is investigated with an autonomously running test rig. It allows realistic testing on an airfield runway by altering load, speed, and slip angle of the tire within and beyond the regions of a passenger aircraft. During the measurements, new and partially unknown effects could be observed. The temperature is mostly influenced by the slip angle followed by speed and load. Furthermore, the contact between tire and runway leads to cooling of the tread but does not affect the temperature inside the grooves. They heat up separately and tend to transfer heat to the tread if the cooling by the runway becomes too low.

ASJC Scopus Sachgebiete

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Experimental Friction and Temperature Investigation on Aircraft Tires. / Linke, Tim Patrick Max; Wangenheim, Matthias; Lind, H. et al.
in: Tire Science and Technology, Jahrgang 42, Nr. 3, 07.2014, S. 116-144.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Linke, TPM, Wangenheim, M, Lind, H & Ripka, S 2014, 'Experimental Friction and Temperature Investigation on Aircraft Tires', Tire Science and Technology, Jg. 42, Nr. 3, S. 116-144.
Linke, T. P. M., Wangenheim, M., Lind, H., & Ripka, S. (2014). Experimental Friction and Temperature Investigation on Aircraft Tires. Tire Science and Technology, 42(3), 116-144.
Linke TPM, Wangenheim M, Lind H, Ripka S. Experimental Friction and Temperature Investigation on Aircraft Tires. Tire Science and Technology. 2014 Jul;42(3):116-144.
Linke, Tim Patrick Max ; Wangenheim, Matthias ; Lind, H. et al. / Experimental Friction and Temperature Investigation on Aircraft Tires. in: Tire Science and Technology. 2014 ; Jahrgang 42, Nr. 3. S. 116-144.
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title = "Experimental Friction and Temperature Investigation on Aircraft Tires",
abstract = "For modeling an aircraft tire using the brush model method, the friction coefficient m between rubber and asphalt should not only be described in terms of the applied pressure and sliding velocity/slip ratio, but also by local temperature inside the contact area. Its influence cannot be neglected, since it leads to significant material property changes. Therefore, investigations on different test rigs are analyzed using thermal recordings of an infrared camera. First measurements are done on a high speed linear tester (HiLiTe), a test rig at the Institute of Dynamics and Vibration Research (IDS) at Leibniz University Hanover, Germany. It allows testing single tread block samples with a constant slip ratio of 100%, that is, pure sliding, on a variety of surfaces such as dry and wet asphalt or concrete, as well as on snow and ice. Results in this paper show that the convection has a smaller impact on tread block cooling than the actual contact between runway surface and sample. Since colder surface temperatures lead to higher friction, this effect antagonizes the excitation frequency, which heats up the rubber sample at high velocities. On long-lasting test sequences a quasi–steadystate friction coefficient might be achieved once these effects start to converge. Still, owing to permanent slip, the abrasion leads to cooling as the hot top layer of the rubber is removed occasionally. In addition to these quasi–steady-state measurements on HiLiTe, the thermal behavior of an aircraft tire is investigated with an autonomously running test rig. It allows realistic testing on an airfield runway by altering load, speed, and slip angle of the tire within and beyond the regions of a passenger aircraft. During the measurements, new and partially unknown effects could be observed. The temperature is mostly influenced by the slip angle followed by speed and load. Furthermore, the contact between tire and runway leads to cooling of the tread but does not affect the temperature inside the grooves. They heat up separately and tend to transfer heat to the tread if the cooling by the runway becomes too low.",
keywords = "Aircraft, Friction, Rubber, Thermal investigation, Tire, Tread block",
author = "Linke, {Tim Patrick Max} and Matthias Wangenheim and H. Lind and Stefan Ripka",
note = "Publisher Copyright: {\textcopyright} 2014, Tire Society Inc. All rights reserved. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.",
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Download

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T1 - Experimental Friction and Temperature Investigation on Aircraft Tires

AU - Linke, Tim Patrick Max

AU - Wangenheim, Matthias

AU - Lind, H.

AU - Ripka, Stefan

N1 - Publisher Copyright: © 2014, Tire Society Inc. All rights reserved. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.

PY - 2014/7

Y1 - 2014/7

N2 - For modeling an aircraft tire using the brush model method, the friction coefficient m between rubber and asphalt should not only be described in terms of the applied pressure and sliding velocity/slip ratio, but also by local temperature inside the contact area. Its influence cannot be neglected, since it leads to significant material property changes. Therefore, investigations on different test rigs are analyzed using thermal recordings of an infrared camera. First measurements are done on a high speed linear tester (HiLiTe), a test rig at the Institute of Dynamics and Vibration Research (IDS) at Leibniz University Hanover, Germany. It allows testing single tread block samples with a constant slip ratio of 100%, that is, pure sliding, on a variety of surfaces such as dry and wet asphalt or concrete, as well as on snow and ice. Results in this paper show that the convection has a smaller impact on tread block cooling than the actual contact between runway surface and sample. Since colder surface temperatures lead to higher friction, this effect antagonizes the excitation frequency, which heats up the rubber sample at high velocities. On long-lasting test sequences a quasi–steadystate friction coefficient might be achieved once these effects start to converge. Still, owing to permanent slip, the abrasion leads to cooling as the hot top layer of the rubber is removed occasionally. In addition to these quasi–steady-state measurements on HiLiTe, the thermal behavior of an aircraft tire is investigated with an autonomously running test rig. It allows realistic testing on an airfield runway by altering load, speed, and slip angle of the tire within and beyond the regions of a passenger aircraft. During the measurements, new and partially unknown effects could be observed. The temperature is mostly influenced by the slip angle followed by speed and load. Furthermore, the contact between tire and runway leads to cooling of the tread but does not affect the temperature inside the grooves. They heat up separately and tend to transfer heat to the tread if the cooling by the runway becomes too low.

AB - For modeling an aircraft tire using the brush model method, the friction coefficient m between rubber and asphalt should not only be described in terms of the applied pressure and sliding velocity/slip ratio, but also by local temperature inside the contact area. Its influence cannot be neglected, since it leads to significant material property changes. Therefore, investigations on different test rigs are analyzed using thermal recordings of an infrared camera. First measurements are done on a high speed linear tester (HiLiTe), a test rig at the Institute of Dynamics and Vibration Research (IDS) at Leibniz University Hanover, Germany. It allows testing single tread block samples with a constant slip ratio of 100%, that is, pure sliding, on a variety of surfaces such as dry and wet asphalt or concrete, as well as on snow and ice. Results in this paper show that the convection has a smaller impact on tread block cooling than the actual contact between runway surface and sample. Since colder surface temperatures lead to higher friction, this effect antagonizes the excitation frequency, which heats up the rubber sample at high velocities. On long-lasting test sequences a quasi–steadystate friction coefficient might be achieved once these effects start to converge. Still, owing to permanent slip, the abrasion leads to cooling as the hot top layer of the rubber is removed occasionally. In addition to these quasi–steady-state measurements on HiLiTe, the thermal behavior of an aircraft tire is investigated with an autonomously running test rig. It allows realistic testing on an airfield runway by altering load, speed, and slip angle of the tire within and beyond the regions of a passenger aircraft. During the measurements, new and partially unknown effects could be observed. The temperature is mostly influenced by the slip angle followed by speed and load. Furthermore, the contact between tire and runway leads to cooling of the tread but does not affect the temperature inside the grooves. They heat up separately and tend to transfer heat to the tread if the cooling by the runway becomes too low.

KW - Aircraft

KW - Friction

KW - Rubber

KW - Thermal investigation

KW - Tire

KW - Tread block

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M3 - Article

VL - 42

SP - 116

EP - 144

JO - Tire Science and Technology

JF - Tire Science and Technology

SN - 0090-8657

IS - 3

ER -