FEM-DBEM approach for crack propagation in a low pressure aeroengine turbine vane segment
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- 作者：Roberto Citarellaa ; rcitarella@unisa.it" class="auth_mail" title="E-mail the corresponding author ; Venanzio Giannellaa ; Edoardo Vivob ; Massimo Mazzeob
- 关键词：FEM-DBEM ; Crack growth ; Thermo-mechanical fatigue ; Superposition principle ; Turbine vane
- 刊名：Theoretical and Applied Fracture Mechanics
- 出版年：2016
- 出版时间：December 2016
- 年：2016
- 卷：86
- 期：part_PB
- 页码：143-152
- 全文大小：3922 K
文摘
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A FEM-DBEM approach is proposed for crack growth simulation on a GE-AVIO engine.
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A benchmark of LC vs. DC procedures is proposed showing respective advantages.
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LC can predict SIFs, CGRs and paths with higher accuracy than DC.
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LC allows a runtime decrease because resorting to a pure stress analysis.
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LC accuracy is enhanced because BCs are continuously updated during propagation.
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DC accuracy is limited because based on BCs with no update during propagation.