Boundary element analysis of damage tolerance of powder metallurgy turbine disk

WEI Da-sheng; WANG Yan-rong; LU Li-peng

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Boundary element analysis of damage tolerance of powder metallurgy turbine disk

更新时间：2026-07-07

- Boundary element analysis of damage tolerance of powder metallurgy turbine disk
- Vol. 24, Issue 6, (2009)
- 作者机构：
  
  北京航空航天大学能源与动力工程学院,北京,100191
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2009
- 稿件说明：
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WEI Da-sheng, WANG Yan-rong, LU Li-peng. Boundary element analysis of damage tolerance of powder metallurgy turbine disk[J]. 2009, 24(6).
DOI：

WEI Da-sheng, WANG Yan-rong, LU Li-peng. Boundary element analysis of damage tolerance of powder metallurgy turbine disk[J]. 2009, 24(6). DOI：

摘要

采用边界元法建立了裂纹扩展分析模型

对FGH95粉末高温合金标准紧凑拉伸(CT)试样的裂纹扩展试验结果进行了数值模拟

计算结果与试验吻合很好

表明分析方法的准确性及可行性.在对粉末高温合金缺陷数据分析的基础上

建立了粉末盘损伤容限边界元分析模型

对其裂纹扩展寿命进行了评估.研究表明:边界元法在损伤容限分析中的实现便捷可行

可应用于复杂构件裂纹扩展特性的工程分析

与传统预测方法相比

能够给出更为合理的寿命结果.

Abstract

An analysis model of crack growth was established by means of boundary element method(BEM)

which was used to simulate the crack growth behavior of a powder metallurgy(PM) superalloy

FGH95.The calculation results show that

the predicted life of crack propagation is in good agreement with the experimental data

and the model is veracious and feasible.Then the model was developed to analyze the damage tolerance characteristic of PM turbine disk containing defects

and the predicted crack propagation life was also given.It indicates that the BEM could be used to estimate the crack growth characteristic of complicated component effectively in engineering analyses

and also give a more reasonable value as compared with conventional life prediction method.

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