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Ultra-high molecular weight polyethylene (UHMWPE) is a tough semi-crystalline polymer employed widely as a bearing material in total joint replacements. The micromechanical model has been presented that predicts stiffness of UHMWPE as an aggregate of crystalline inclusions (lamellae) embedded in a rubbery matrix of amorphous polymer chains. The differential scheme was chosen for its ability to represent the interaction between an inclusion and the matrix. Numerical simulations show that increasing lamellar thickness results in less stiffness, less shear stress imposed on the lamellae, indicates that thick lamellae are desirable for UHMWPE materials utilized in total joint replacement bearings.
|Title of host publication||Engineering and Innovative Materials VI 6th ICEIM 2017|
|Editors||Takahiro Ohashi, Muhammad Yahaya|
|Publisher||Trans Tech Publications Ltd|
|Number of pages||7|
|State||Published - 2018|
|Event||6th International Conference on Engineering and Innovative Materials, ICEIM 2017 - Tokyo, Japan|
Duration: 3 Sep 2017 → 5 Sep 2017
|Conference||6th International Conference on Engineering and Innovative Materials, ICEIM 2017|
|Period||3/09/17 → 5/09/17|
- Constitutive behavior
- Ultra-high molecular weight polyethylene
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