Simplified three-dimensional finite element hot-spotting modelling of a pin-mounted vented brake disc: an investigation of hot-spotting determinants

Tang, Jinghan; Bryant, David; Qi, Hongsheng; Whiteside, Ben; Babenko, Maksims

doi:10.1177/0954407017713080

Cited by 5 publications

(5 citation statements)

References 26 publications

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“…NAMHS findings seem to be consistent with other research which found 50°C temperature difference at rubbing zones [7]. In contrast, another result reported 5% error between axisymmetric and non-axisymmetric thermal analysis [6]. This might appear due to higher initial velocity used (twice compared to this study).…”

Section: Circumferential Surface Temperature Variationssupporting

confidence: 92%

“…Furthermore, spatial surface temperature presented here (Fig. 9) is not observed similar with hot spots and hot bands in other studies [6], which might be due to negligence of thermoelastic contact wear between pad-disc interface, and variation in input parameters. But, compared to traditionally known models, it is believed that the NAMHS had successfully uncovered surface temperature spatial variations at any braking time.…”

Section: Circumferential Surface Temperature Variationssupporting

confidence: 49%

“…There is a large volume of published studies on axisymmetric modelling, because it improves the computational efficiency by assuming the brake pads to cover 360°of the contact surface [6]. Computational problems have been easily managed by assuming two-dimensional geometry.…”

Section: Introductionmentioning

confidence: 99%

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Non-Axisymmetric Modelling of Moving Heat Source for Spatial and Temporal Investigation of Temperature in Railway Vehicles Disc Brake

Deressa

Ambie

2022

Urban Rail Transit

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Railway disc brake is vulnerable to surface damages including fade, wear, squeal, thermal cracks and fatigue being just few of them. To counteract these negative consequences, reliable thermal model that can accommodate space and time variables is essential. The aim of this study is to develop new non-axisymmetric moving heat source and compare its efficiency with pre-existing traditional models. Factors responsible for temperature spatial and temporal variation are identified first and then programmed in ANSYS APDL similar capability to a FORTRAN. Heat flux and convection coefficients are calculated by empirical equations and stored in parameters and arrays for later use, based on small time and pad angular increment. The modelling is to successfully solve the problems in traditional models by estimating surface temperature difference as high as 49 °C, within acceptable computation time. Besides, its consideration of radial distance reported variations from traditional models as high as 10% and 60% in moving heat source and axisymmetric, respectively. And, it is also verified with the literature within acceptable variation. Finally, it is suggested that the model can be applied in conducting pad geometry optimization, thermal stress and fatigue life of disc brake.

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Section: Circumferential Surface Temperature Variationssupporting

confidence: 92%

Section: Circumferential Surface Temperature Variationssupporting

confidence: 49%

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Non-Axisymmetric Modelling of Moving Heat Source for Spatial and Temporal Investigation of Temperature in Railway Vehicles Disc Brake

Deressa

Ambie

2022

Urban Rail Transit

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“…[2,25,26]. This case of damage is very often described for brake discs [19,25,27,28]. The consequences of hot spots are judder [16,[29][30][31][32] and the failure of the brake or clutch system [2,33].…”

Section: Introductionmentioning

confidence: 99%

Comparison of Various Wet-Running Multi-Plate Clutches with Paper Friction Lining with Regard to Spontaneous Damage Behavior

Stahl¹,

Schneider²,

Bedrikow³

et al. 2021

Tribol. Ind.

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Wet-running multi-plate clutches fulfill a major safety-relevant role in drive trains and, as a result, damage to and failure of the clutch system must be strictly avoided, especially spontaneous damage. This paper deals with spontaneous damage to wet-running multi-plate clutches with paper friction lining with respect to spontaneous damage behavior. The paper presents a comparison method, by means of which the load-carrying capacity of various multi-plate clutches can be compared with regard to spontaneous damage based on experimental data and recommendations can be formulated. The experiments were performed on six different clutch variants, and the results were examined for significant differences. Various statistical tools were used to detect statistically significant variations. The experiments showed that higher load levels have a greater dispersion of the measured values, thus making comparisons more difficult. In the clutch variants investigated, significant changes in spontaneous damage behavior could only be detected when the cooling plate thickness or the carbon content was changed.

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“…Durch Martensitbildung kommt es zu einer Volumenzunahme und zur lokalen Verdickung der Stahllamellen [1,16,17]. Bei Hot Spots an Bremsscheiben werden des Öfteren hohe Spannungen und Risse beschrieben, welche aufgrund hoher thermischer Gradienten entstehen [12,[18][19][20][21].…”

Section: Introductionunclassified

Einfluss von Vorschädigung auf das Reibungsverhalten nasslaufender Lamellenkupplungen im Dauerschaltbetrieb

Schneider

Voelkel

Pflaum

et al. 2021

Forsch Ingenieurwes

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ZusammenfassungAusfälle von Lamellenkupplungen müssen aufgrund von sicherheitskritischen Funktionalitäten im Antriebsstrang sicher ausgeschlossen werden. Neben Langzeitveränderungen bei Lamellenkupplungen sind insbesondere Spontanschäden von Relevanz. Dieser Beitrag befasst sich mit dem Einfluss von Spontanschäden auf das Schaltverhalten im Dauerschaltbetrieb.Zunächst werden gezielt Spontanschäden durch Schaltungen mit hohen Belastungen hervorgerufen. Dazu werden drei Kupplungen in Stufenversuchen mit unterschiedlichen Intensitäten vorgeschädigt, so dass Spontanschäden (lokale Verfärbung, lokale Verdickungen) auftreten. Im zweiten Schritt werden Dauerschaltversuche mit den vorgeschädigten Kupplungspaketen und einer nicht vorgeschädigten Referenzkupplung durchgeführt. Das Reibungsverhalten der Kupplungen während der Dauerschaltversuche wird verglichen und bewertet. Lokale Verfärbungen sind nach dem Dauerschaltversuch in abgeschwächter Form sichtbar. An den Stahllamellen sind weiterhin lokale Verdickungen vorhanden. Im Dauerschaltversuch ist die mittlere Reibungszahl µmit der vorgeschädigten Kupplungspakete tendenziell höher. Darüber hinaus sind drehzahlabhängige Drehmomentschwankung zu beobachten Die Schwankungen sind umso stärker, je stärker die Vorschädigung war.

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Simplified three-dimensional finite element hot-spotting modelling of a pin-mounted vented brake disc: an investigation of hot-spotting determinants

Abstract: Simplified three-dimensional finite element hotspotting modelling of a pin-mounted vented brake disc: an investigation of hot-spotting determinants.

Cited by 5 publications

References 26 publications

Non-Axisymmetric Modelling of Moving Heat Source for Spatial and Temporal Investigation of Temperature in Railway Vehicles Disc Brake

Non-Axisymmetric Modelling of Moving Heat Source for Spatial and Temporal Investigation of Temperature in Railway Vehicles Disc Brake

Comparison of Various Wet-Running Multi-Plate Clutches with Paper Friction Lining with Regard to Spontaneous Damage Behavior

Einfluss von Vorschädigung auf das Reibungsverhalten nasslaufender Lamellenkupplungen im Dauerschaltbetrieb

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