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摩擦制动器的工作是间断性和周期性的,在制动器制动的瞬间摩擦工作剂产生大量的热,温度出现一个峰值,这个温升过程即为瞬态温升。摩擦材料的烧损和对偶盘的龟裂等都与瞬态温升有直接关系,因此,研究摩擦制动器瞬态温升过程及其温度分布是具有十分重要的意义。一、数学模型摩擦制动器瞬态温升的计算仍似《摩擦制动器体积温升的有限单元法计算》一文(重型机械1990.1)中所假设的轴对称的二维温度场为模型,考虑到瞬态温升所持续的时间极短,故忽略这段时间内各面的热量散失,近似认为
Friction brake work is intermittent and periodic, the friction brake agent at the moment the friction agent generates a lot of heat, the temperature peaked, the temperature rise is the transient temperature rise. The burning of friction material and the cracking of the dual plate are directly related to the transient temperature rise. Therefore, it is of great significance to study the transient temperature rise and the temperature distribution of the friction brake. First, the mathematical model Friction brake transient temperature rise is still calculated “Friction brake volume temperature rise finite element method” article (heavy machinery 1990.1) assumes the axisymmetric two-dimensional temperature field model, taking into account the transient The duration of the temperature rise is extremely short, so ignoring the heat loss from all sides during this time period,