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首页> 外文期刊>Journal of Heat Transfer >Simulation of Energy Dissipation and Heat Transfers of a Braking System Using the Discrete Element Method: Role of Roughness and Granular Plateaus
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Simulation of Energy Dissipation and Heat Transfers of a Braking System Using the Discrete Element Method: Role of Roughness and Granular Plateaus

机译：使用离散元方法模拟制动系统的能量耗散和热传递：粗糙度和颗粒高原的作用

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The objective of this study focuses on the energy dissipation by friction on the interface of a braking system and the effects of roughness and granular plateaus on heat propagation. Faced with the difficulty of defining velocity accommodation and thermal partition between the two bodies in contact (disk and pad, for example,), the authors model the third body (friction) layer with circular particles detached from the pad. From a numerical point of view, this paper proposes a strategy of storing mechanical calculations in steady-state and using it for successive thermal processing in discrete element method (DEM) code. Thus, the heat is generated due to interparticle friction and is dissipated in the disk/pad interface by conductance. Accordingly, this coupling micro-macro model aims to determine the temperature rise of the pad/disk interface and to identify the equivalent thermal resistance. In line with that, the authors provide discussions of these parameters compared to experimental/empirical data as reported in the literature review and limitations of the model.
机译：这项研究的目标集中在制动系统的界面上的摩擦引起的能量耗散以及粗糙度和颗粒平稳状态对热量传播的影响。面对定义接触的两个物体（例如，磁盘和垫片）之间的速度调节和热分配的困难，作者建模了第三实体（摩擦）层，其中圆形颗粒从垫片上脱落了。从数值的角度来看，本文提出了一种将力学计算存储在稳态下，并用于离散元方法（DEM）代码中进行连续热处理的策略。因此，热量是由于颗粒间的摩擦而产生的，并通过电导在磁盘/垫界面中消散。因此，该耦合微宏模型旨在确定垫/盘界面的温度升高并确定等效热阻。与此相符的是，与文献综述中所报道的实验/经验数据以及该模型的局限性相比，作者们对这些参数进行了讨论。

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