学术
摘 要:
为给超高分子量聚乙烯（UHMWPE）齿轮的承载能力计算及校核提供理论依据和参考,本文以UHMWPE的非线性黏弹性为基础,采用了黏弹性力学模型和超弹性力学模型（Arruda-Boyce模型）相结合的方法,建立了UHMWPE齿轮的力学模型和几何模型,应用ABAQUS非线性有限元分析软件,对与钢齿轮啮合运转时的UHMWPE齿轮进行了动态模拟,并对它的应力和应变大小、分布及承载能力进行了计算和分析研究.结果表明,齿根部位的Von Mises应力和弯曲应力最大,轮齿节点处的接触压应力最大.建立在非线性黏弹性基础上的UHMWPE齿轮动态模拟和计算分析结果更符合实际.[著者文摘]
文章出处:
《中国矿业大学学报》-2007年36卷5期 -641-646页
文献标识码:
A
文章编号:
1000-1964（2007）05-0641-06
Computation and Analysis of Ultra High Molecular Weight Polyethylene Gear Based on Viscoelasticity
ZHENG Xiao-wen, LU Song, MENG Hui-rong （School of Mechanical, Electronic and Information Engineering, China University of Mining ＆Technology, Beijing 100083, China）
Abstract:
To provide theoretical foundation and reference for the calculation and checking of load capacity of ultra high molecular weight polyethylene （UHMWPE） gear , the mechanical and geometrical model of UHMWPE gears were established using the method that combined viscoelastic mechanical model with hyperelastic mechanical model （Arruda-Boyce） based on the nonlinear viscoelasticity of UHMWPE. The meshing conditions for the UHMWPE gear mated steel gear were simulated, and the stress, strain, load capacity of UHMWPE gear were computed and analyzed by means of ABAQUS finite element software. The results show that the biggest Von Mises stress and bending stress are at gear roots and the biggest compressive stress is at the pitch point of meshing teeth. The results of dynamic simulation and computational analysis agree better with UHMWPE gear＇s properties.[著者文摘]
Key words:
nonlinear viscoelasticity; ultra high molecular weight polyethylene （UHMWPE）; plastic gear; finite element method （FEM） ; stress; strain
基金资助:
国家自然科学基金项目（59975084）
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