目前煞車方式以碟煞為主流,廣泛應用於汽機車業,而以異徑方式的油壓活塞缸作動力完成摩擦阻力之效果,此一系統由於非對稱的受力結構,以往並無仔細探討,本研究針對JBT廠商提供異徑對向六缸卡鉗碟煞系統做力學及熱構耦合分析探討,利用有限元素法進行分析動作,進而了解力學特性與熱分布情形,藉由分析結果了解此一系統應力、應變情形;另一方面,就卡鉗碟煞系統受不同煞車力之下模擬分析,了解碟盤升溫及熱分布狀態。 在本研究結果中發現對稱模型可使用單邊分析以減少分析時間及設定誤差,以及異徑設計對不均勻磨耗現象的確有改善的效果。本文以不同的煞車壓力、時間及速度模擬其受力來令片之摩擦力下的溫度分布及差異,並證明急速煞車或高壓力之下對來令片的表面溫度有急速上升的效果,而以等速施壓狀態下的熱分布最為均勻。
This study investigate on mechanical-thermal structure coupled of the six-cylinder calipers disc brake system which provide by JBT manufacturer. In this paper, use of finite element method to analyze the brake system and to understand the mechanical properties, strain- stress, and under different braking force to understand the state of the disc temperature and heat distribution. In the results of this study, Symmetric model can be used to unilateral analysis to reduce the analysis time and setting error. The different diameter piston disc brakes design has the effect of improvement uneven wear, different brake pressure, time and speed to simulate the force to make the temperature distribution and differences in the piece of friction. And demonstrate the rapid braking or under high pressure to the surface temperature has rises sharply, the most uniform distribution of the thermal pressure by constant velocity.