Rapid evaluation method for thermal mechanical fatigue life of engine single crystal blade

A thermomechanical fatigue, single crystal blade technology, applied in the field of turbine blades, can solve problems such as low efficiency, and achieve the effect of improving efficiency

Inactive Publication Date: 2019-08-06
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, when evaluating the thermomechanical fatigue life of a single crystal blade, it is necessary to carry out ...

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  • Rapid evaluation method for thermal mechanical fatigue life of engine single crystal blade
  • Rapid evaluation method for thermal mechanical fatigue life of engine single crystal blade
  • Rapid evaluation method for thermal mechanical fatigue life of engine single crystal blade

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Embodiment Construction

[0036] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to the Those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, one skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or that other methods, materials, etc. may be employed. In other instances, well-known technical solutions have not been shown ...

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Abstract

The invention relates to the technical field of turbine blades, and provides a rapid evaluation method for thermal mechanical fatigue life of an engine single crystal blade. The rapid evaluation method comprises the steps of determining the temperature field of the single crystal blade; determining a stress field of the single crystal blade; determining damage key factors of the single crystal blade based on a thermal mechanical fatigue test; determining a thermal mechanical fatigue damage prediction model according to the temperature field, the stress field, the damage key factors, the crystal plasticity theory and the damage accumulation theory; determining a mapping relation between the temperature and the stress of the single crystal blade; and determining the thermal mechanical fatigue life of the single crystal blade according to the mapping relation and the thermal mechanical fatigue damage prediction model. The efficiency of life assessment can be improved.

Description

technical field [0001] The present disclosure relates to the technical field of turbine blades, in particular to a method for rapidly evaluating the thermomechanical fatigue life of an engine single crystal blade. Background technique [0002] Single crystal blades are key components of engine turbines. Evaluation of the thermomechanical fatigue life of single crystal blades is an important step in the engine design process. [0003] In the prior art, when evaluating the thermomechanical fatigue life of a single crystal blade, it is necessary to carry out material tests, high-cycle fatigue tests of parts, low-cycle fatigue tests, machine test runs and flight tests, and the efficiency is low . [0004] It should be noted that the information disclosed in the above background section is only for enhancing the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to those of ordinary skill...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F2119/04G06F2119/06G06F2119/08G06F30/20
Inventor 温志勋岳珠峰谷淑宁杨艳秋蒋波王昭晗许壮壮程昊
Owner NORTHWESTERN POLYTECHNICAL UNIV
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