asked in 科學其他:科學 · 2 decades ago





Modelling the three-body abrasive wear of UHMWPE particle reinforced composites

In this paper, some of the complexities in developing predictive models for polymer composite materials are discussed with particular reference to models based on surface deformation energy. Although there are models available for abrasive wear of metals, polymers and composite materials, models are suitable for a particular wear situation. Most of the cases, the wear models are based on traditional test methods, such as two-body abrasive wear test or tests in a controlled environment. Moreover models for polymer composite materials are very limited. This is due to the fact that the vast range of polymers and polymer composite materials present different wear behaviour in similar wear situations. This makes the modelling wear of polymer composite materials complicated. This paper presents and discusses recent test results on ultra high molecular weight polyethylene (UHMWPE) particle reinforced composites with varying particle concentration from a unique test rig that exposes the wear surface to sliding bulk solids (granular materials). The wear phenomena of resin and UHMWPE particle reinforced resin surfaces abraded by bulk solids are discussed with respect to the interaction between the particles and the wear surfaces. The effects of elastic and plastic deformation energy of the surfaces on the abrasive wear resistance are also discussed in the context of an appropriate wear model for these surfaces and wear events. Finally a model is proposed to predict the wear of these polymer composites based on the deformation energy of the surfaces. Good qualitative agreement was obtained between the model and the experimental wear rates.

1 Answer

  • Anonymous
    2 decades ago
    Favorite Answer


    用UHMWPE 粒子強化合成材質(composite)的三體刮磨(three-body abrasive wear)的模型

    本文裡有說明一些關於聚合體合成材質的預測性模型在開發上的困難,其中有特定談及根據表面變型能量(surface deformation energy)的模型。雖然金屬、聚合體、與合成材質有刮磨模型,這些模型適用於特定的磨損狀況。在大多數情況,磨損模型根據了傳統的測試方法,如二體刮磨測試或在控制環境裡的測試。還有,對聚合體合成材質的模型非常有限。這是因為有很多的聚合體與聚合體合成材質在類似的磨損狀況有不同的磨損行為。這使得要做聚合體合成材質的模型會很複雜。本文說明與討論最近用一種獨特的測試裝置,將磨擦面接觸滑動(粗糙)塊狀固體,對有不同粒子密度,用超高分子量聚乙烯 (ultra high molecular weight polyethylene (UHMWPE) ) 粒子強化的合成材質所做的測試結果。另外本文討論樹脂與用 UHMWPE 粒子強化的樹脂受塊狀固體磨擦時的磨損現象,與相對粒子與磨擦面間的互動彈性(elastic)與塑性(plastic)的表面變型能量對刮磨抗力(resistance)的影響也會用適合其表面與磨損事件的磨損模型討論。最後,建議一個可以依表面變型能量預測這些聚合體合成材質的模型。這模型與實驗磨損率在數字上吻合度相當的好。


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