This depends on the estimation of the temperatures generated by frictional heat . 它取決于摩擦熱所引起的溫度估算。
The result shows that it is mainly caused by the martensite with high hardness produced after rail absorbing frictional heat 斷裂的主要原因是鋼軌在吸收摩擦熱后產生了高硬度的馬氏體。
The biggest fuel savings achieved by a full hybrid vehicle derives from regenerative braking , a technology that captures as electrical power much of the energy normally lost as frictional heat 高量級混合車最大的省油關鍵來自再生制動(煞車)技術,這種技術可捕集摩擦熱(通常幾乎散失掉的能量)并轉變成電力。
The effect of the variation of temperature and contact pressure of the sliding contact surfaces with frictional heating on each other , particularly the relationship of the applied pressure and the contact pressure and the effect of the separate variation of some parameters on the simulation results were taken account into in the course of numerical simulation 在數值計算過程中,著重考慮了溫度變化與接觸區域壓力變化的耦合問題,接觸壓力與外加壓力的關系,以及分別改變一些參數對結果的影響。
The fem results indicated that as to the rough surfaces in sliding contact , the value of the contact pressure was very high which coursed a high value of the heat flow rate , meanwhile the sliding time was not enough for the frictional heat to transfer , thus the highest value of the body temperature occurred just on the sliding surfaces , which possessed a sharp thermal gradient in direction perpendicular to the sliding surface . so the great thermal stress was caused just by the sharp gradient and the thermal elastic distortion with which the contact pressure changed occurred simultaneously , thus this change of the contact pressure would affect the temperature distribution in return 對于相對滑動的粗糙表面,因實際接觸面積小而導致接觸壓力很大,這樣使得熱流密度會很大,同時由于滑動時間很短,熱來不及傳導,最高溫度發生在摩擦表面,在垂直于摩擦面的方向有很大的溫度梯度,使得熱應力很大,且最大應力發生在表面,同時產生熱彈性變形,這種變形使得接觸區域內的壓力分布發生變化,這種變化又反過來影響了接觸區域的溫度分布。