| 基于ANSYS和Certon-Dolan理论分析估计疲劳寿命的方法 |
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| 引用本文： | 朱彤,王明强.基于ANSYS和Certon-Dolan理论分析估计疲劳寿命的方法[J].江苏科技大学学报(社会科学版),2007,21(Z1):48-52. |
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| 作者姓名： | 朱彤 王明强 |
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| 作者单位： | 江苏科技大学机械与动力工程学院，江苏科技大学机械与动力工程学院 江苏 镇江 212003，江苏 镇江 212003 |
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| 摘 要： | 依据累积疲劳损伤法-迈纳(Miner)法和应力寿命曲线(S-N)推导变幅多级载荷下等效应力及强度判据公式;结合ANSYS有限元分析软件和柯顿-多兰(Certon-Dolan)理论,通过APDL(Ansys Pa- rameter Design Language)参数化建模,分析出不同载荷下应力集中的部位,将有限元网格划分的危险部位节点单元的应力值取出,代入理论公式估算疲劳寿命,具体分析多级载荷加载次序对疲劳寿命的影响,比较Miner方法和Certon-Dolan方法优劣,并提供设计参考数据和理论判据。
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| 关 键 词： | 多级载荷 有限元分析 APDL 应力集中 疲劳寿命 |
| 文章编号： | 1673-4807(2007)-0048-05 |
| 修稿时间： | 2007年5月29日 |
Fatigue Life Estimation Method Based on ANSYS and Certon-Dolan Theory |
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| ZHU Tong,WANG Mingqiang.Fatigue Life Estimation Method Based on ANSYS and Certon-Dolan Theory[J].Journal of Jiangsu University of Science and Technology:Natural Science Edition,2007,21(Z1):48-52. |
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| Authors: | ZHU Tong WANG Mingqiang |
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| Abstract: | Based on the Miner method about the cumulating fatigue damage and the S-N(stress life) curve,the equivalent stress and the intensity criterion are deduced under the multilevel loads with changing range.Combi- ning the software ANSYS and the Certon-Dolan theory,the position of stress concentration under different loads is analyzed through the modeling by using APDL(ANSYS parameter design language).The stress values on the danger nodes are obtained with the FEM (finite element method) and the fatigue life is figured out.At the same time,the effect of the loading order of multilevel loads on the fatigue life is analyzed in detail.The Miner method and the Certon-Dolan theory are compared.The reference data and the theoretical criterion are provided. |
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| Keywords: | multilevel load finite element method ansys parameter design language stress intensity fatigue life |
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