| 王刚,程燕平.利用间隙元的方法计算和分析疲劳寿命[J].计算力学学报,2002,19(1):114~117 |
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| 利用间隙元的方法计算和分析疲劳寿命 |
| Calculate and analysis of fatigue life with principle of the gap element |
| 修订日期：2000-01-25 |
| DOI：10.7511/jslx20021026 |
| 中文关键词: 间隙元,累积损伤法,疲劳寿命 |
| 英文关键词:gap element,accumulative damage method,fatigue life |
| 基金项目: |
| 王刚 程燕平 |
哈尔滨工业大学航天工程与力学系 黑龙江哈尔滨150001
(王刚，程燕平)
，哈尔滨工业大学航天工程与力学系 黑龙江哈尔滨150001(程靳)
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| 摘要点击次数: 1561 |
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| 中文摘要: |
| 提出了一个利用结构有限元方法中间隙元的原理来计算和分析疲劳寿命的新的累积损伤模型和方法。该方法利用间隙来模拟裂纹的形成和扩展 ,并提出新的累积损伤理论。不仅可以得到构件的疲劳总寿命 ,而且还可以用于计算裂纹的生成寿命、扩展寿命。同时又描述了裂纹的开裂过程 ,即裂纹的开裂尺寸和开裂方向。这为进行各种疲劳强度设计提供了一个新的思路和方法 |
| 英文摘要: |
| The paper proposes a new method to analyze fatigue accumulative damage and calculate fatigue life. A gap element is used to simulate the fatigue crack form and growth, a new finite model is established by create a gap element. Then the same finite element analysis program is loaded for carrying out the second calculation, in which all nodes' stresses, strains and the corresponding amplitudes can be obtained. Finally, With all the second calculation results and a new accumulate damage rule proposed by authors, the initial, growth and total fatigue life can be predicted, And the growth length and direction of the crack can be also determined. The method would be helpful for the fatigue strength design. |
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