| 大型非均质轧辊辊间接触应力分布规律的研究 |
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| 引用本文： | 杜凤山,黄华贵,许志强.大型非均质轧辊辊间接触应力分布规律的研究[J].工程力学,2006,23(7):176-179,141. |
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| 作者姓名： | 杜凤山 黄华贵 许志强 |
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| 作者单位： | 燕山大学机械工程学院,河北,秦皇岛,066004 |
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| 基金项目： | 国家自然科学基金;国家研究发展基金 |
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| 摘 要： | 针对轧辊表面剥落失效现象,采用非线性有限元方法,考虑轧辊表面淬硬层与其心部金属材料组织性能差别,对四辊轧机工作辊与支撑辊间接触应力问题进行模拟。并将模拟结果与传统强度校核方法进行了对比分析,结果表明非均质条件下的辊间接触应力和支撑辊辊内剪应力峰值及其作用深度均大于传统Hertz公式的计算结果,对于深入分析轧辊的失效行为具有重要意义。
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| 关 键 词： | 轧辊 接触应力 非均质 淬硬层 剥落 有限元法 |
| 文章编号： | 1000-4750（2006）07-0176-04 |
| 收稿时间： | 2004-09-26 |
| 修稿时间： | 2004-09-262005-06-05 |
RESEARCH ON DISTRIBUTION LAW OF CONTACT STRESSES BETWEEN HEAVY ROLLERS MADE OF HETEROGENEOUS MATERIAL |
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| DU Feng-shan,HUANG Hua-gui,XU Zhi-qiang.RESEARCH ON DISTRIBUTION LAW OF CONTACT STRESSES BETWEEN HEAVY ROLLERS MADE OF HETEROGENEOUS MATERIAL[J].Engineering Mechanics,2006,23(7):176-179,141. |
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| Authors: | DU Feng-shan HUANG Hua-gui XU Zhi-qiang |
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| Affiliation: | College of Mechanical Engineering, YanShan University, Qinhuangdao, Hebei 066004, China |
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| Abstract: | Aiming at the surface spalling failure of rollers,the distribution law of contact stresses between the working roll and the back-up roll of a four-high-mill was simulated with nonlinear finite element method considering the different material microstructure and performance between hardening layer and core of rollers.Comparison of the available simulated results with the theoretical predictions using traditional strength check method indicates that the contact stresses between rollers,maximum shear stress below the back-up roll surface and its acting depth were all greater than the theoretical predictions of Hertz's formulas,which is very important for discovering the failure mechanism of rollers. |
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| Keywords: | roller contact stress heterogeneous material hardening layer spalling finite element method |
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