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首页> 外文会议>Transactions of the North American Manufacturing Research Institution of SME >DISCRETE ELEMENT MODELING OF MICRO-FEATURE HOT COMPACTION PROCESS
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DISCRETE ELEMENT MODELING OF MICRO-FEATURE HOT COMPACTION PROCESS

机译：微特征热压过程的离散元建模

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摘要

In the forming of porous micro-features using hot compaction process, it is costly and time-consuming to determine a proper experiment setting (force, temperature and time) by trial and error. Product qualities, such as mechanical strength and porosity, are significantly affected by the setting of those process variables.rnIn order to analytically study the effect of the force and temperature on the particle bonding strength and porosity, a discrete element model for pressure assisted sintering was developed for the forming of porous micro-features. The model was first validated with experimental results for a unit problem (two particles). And then it was expanded for a 10-particle channel hot pressing problem. With this model, we could conveniently assess the effects of force and temperature on the particle bonding strength and shrinkage, which then give us insight on deciding a proper process setting before the actual operations.
机译：在使用热压工艺形成多孔微特征的过程中，通过反复试验来确定合适的实验设置（力，温度和时间）既昂贵又费时。这些工艺变量的设置会显着影响产品质量，例如机械强度和孔隙率。rn为了分析研究力和温度对颗粒结合强度和孔隙率的影响，采用了离散元模型进行压力辅助烧结。为形成多孔微特征而开发。该模型首先用一个单元问题（两个粒子）的实验结果进行了验证。然后将其扩展为10粒子通道热压问题。使用此模型，我们可以方便地评估力和温度对颗粒粘结强度和收缩率的影响，从而使我们能够在实际操作之前确定合适的工艺设置。

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