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High-temperature fatigue-creep interaction damage assessment method and system and storage medium

A fatigue and creep technology, applied in the field of data processing, can solve the problems of low feasibility, complex structure and force, large number of transient working conditions, etc., to achieve the effect of easy implementation and reduction of computational workload

Active Publication Date: 2020-07-31
DONGFANG (GUANGZHOU) HEAVY MASCH CO LTD
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Problems solved by technology

[0003] In the existing technology, the nonlinear elastoplastic analysis method is used to directly analyze the fatigue-creep interactive damage during the whole life period, but due to the complex structure and stress of nuclear power equipment and the large number of transient conditions, this method requires a huge amount of calculation and less feasible

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  • High-temperature fatigue-creep interaction damage assessment method and system and storage medium

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Embodiment Construction

[0055] The present invention will be further explained and described below in conjunction with the accompanying drawings and specific embodiments of the description. For the step numbers in the embodiment of the present invention, it is only set for the convenience of explanation and description, and there is no limitation on the order of the steps. The execution order of each step in the embodiment can be carried out according to the understanding of those skilled in the art Adaptive adjustment.

[0056] Due to the complex structure and stress of nuclear power equipment, and the large number of transient conditions, using nonlinear elastoplastic analysis methods to directly analyze the fatigue-creep interaction damage during the life cycle will lead to a huge amount of calculation or even be unfeasible. This application provides a high temperature fatigue-creep interactive damage assessment method based on linear elastic analysis.

[0057] Specifically, the method of the pre...

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Abstract

The invention discloses a high-temperature fatigue-creep interaction damage assessment method and system and a storage medium, and the method comprises the steps: obtaining a steady-state stress analysis result and a transient-state stress analysis result of a to-be-assessed structure under multiple working conditions through a finite element analysis method based on linear elasticity; according to the steady state stress analysis result and the transient state stress analysis result, obtaining a deformation and strain analysis result of an evaluation point of the to-be-evaluated structure; according to the deformation and strain analysis result, carrying out fatigue damage calculation on the evaluation point under different working conditions, and obtaining a fatigue accumulated damage factor; obtaining creep damage evaluation results of the evaluation points under transient and steady-state working conditions at high temperature; and obtaining a fatigue-creep interaction damage evaluation result of the evaluation point according to the fatigue accumulation damage factor and the creep damage evaluation result. The method can reduce the calculation workload, the calculation difficulty and the calculation time, is easier to implement, has higher generalizability, and can be widely applied to the technical field of data processing.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a high temperature fatigue-creep interactive damage assessment method, system and storage medium. Background technique [0002] For high-temperature equipment in nuclear power plants, since the operating temperature exceeds the creep temperature of the material, when evaluating the safety of the structural strength, it is necessary to evaluate the fatigue-creep interactive damage in various parts of the equipment structure to ensure safe operation of the equipment. [0003] In the existing technology, the nonlinear elastoplastic analysis method is used to directly analyze the fatigue-creep interactive damage during the whole life period, but due to the complex structure and stress of nuclear power equipment and the large number of transient conditions, this method requires a huge amount of calculation and less feasible. Contents of the invention [0004] In view of th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/17G06F119/14G06F119/08
CPCY02T90/00
Inventor 周丹何思翾黎蛰鳌
Owner DONGFANG (GUANGZHOU) HEAVY MASCH CO LTD
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