孔洞對實心煞車碟盤溫度之影響

對於實心碟盤而言，盤面上之孔洞是一項常見之設計特徵。孔洞會減少碟盤之質量，使熱容量降低；孔洞也會改變總表面積大小，影響對流冷卻。由於孔洞同時對碟盤之儲熱與散熱能力造成變化，碟盤之溫度必定受到影響。本研究利用有限元素法，模擬數組不同鑽孔模式之碟盤模型，在不同車輛行駛模式下之溫度變化。再根據模擬結果推論孔洞對碟盤溫度之影響。本研究最後以一範例，展示不同之鑽孔模式，使碟盤保持在最高容許溫度以下，同時達成輕量化目標。

關鍵字

煞車；碟盤；孔洞；溫度；有限元素法

並列摘要

For the solid brake disc, cross drilling on the disc surface is a common design to reduce the total mass of the disc. These holes also change the total surface area of the disc and affect the convection capability. By altering both heat storage and heat dissipation simultaneously, the cross-drilled holes would definitely influence the disc temperature change during operation. In this research, finite element method (FEM) is used to simulate the disc temperature models of several discs with different hole patterns. The influence of the cross-drilled holes on the temperature change of the solid brake disc is thus found. In the end, an example is introduced to show how the hole pattern of a disc is modified so that the disc temperature is kept under the highest limit allowed.

並列關鍵字

brake ； brake disc ； cross-drilled hole ； temperature ； finite element method

參考文獻

【2】 Lee, K., "Numerical Prediction of Brake Fluid Temperature Rise During Braking and Heat Soaking," SAE 1999-01-0483, 1999.

【3】 Yamashita, Y., Asano H., Kawase, M. and Iwata, K., "High Performance Asbestos-Free Friction Material for Disc Brake Pads with the Controlled Grain Structure," SAE 890861, 1989.

【4】 Olesiak, Z., Pyryev, Y. and Yevtushenko, A., "Determination of Temperature and Wear During Braking," Wear, Vol. 210, pp. 120-126, 1997.

【5】 Day, A. J., Tirovic, M. and Newcomb, T. P., "Thermal Effects and Pressure Distribution in Brakes," Proc. Instn. Mech. Engrs., Vol. 205, pp. 199-205, 1991.

【6】 Valvano, T. and Lee, K., "An Analytical Method to Predict Thermal Distortion of a Brake Rotor," SAE 2000-01-0445, 2000.

國際替代計量

孔洞對實心煞車碟盤溫度之影響

全文下載

主題瀏覽