基于流固耦合低比转速离心泵叶轮强度及疲劳寿命分析

TH311; 综合考虑离心泵工作时叶轮真实的应力及变形状态,基于Ansys Workbench软件平台运用计算流体动力学分析软件CFX对离心泵模型叶轮进行了流固耦合数值模拟,计算了叶轮在离心力以及CFD压力载荷共同作用下离心泵叶轮强度,确定了在旋转过程中受到周期性交变应力的作用下,叶轮上最大应力的位置.最后运用nCode Designlife软件叶轮进行疲劳寿命预测,结果表明,最大应力位于叶片出口边缘与盖板交界的位置,且循环交变动应力是引起叶轮疲劳损伤的主要原因.叶轮满足无限寿命疲劳强度设计,叶轮无疲劳破坏风险....

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Published in中国农村水利水电 no. 10; pp. 127 - 133
Main Authors 唐振海, 宋文武, 欧铭
Format Journal Article
LanguageChinese
Published 西华大学能源与动力工程学院,四川 成都 610039 15.10.2024
西华大学 流体及动力机械教育部重点实验室,四川 成都 610039
Subjects
强度分析
叶轮
strength analysis
fluid-structure coupling
impeller
finite element
有限元
流固耦合
fatigue life
疲劳寿命
Online AccessGet full text
ISSN1007-2284
DOI10.12396/znsd.240313

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Abstract TH311; 综合考虑离心泵工作时叶轮真实的应力及变形状态,基于Ansys Workbench软件平台运用计算流体动力学分析软件CFX对离心泵模型叶轮进行了流固耦合数值模拟,计算了叶轮在离心力以及CFD压力载荷共同作用下离心泵叶轮强度,确定了在旋转过程中受到周期性交变应力的作用下,叶轮上最大应力的位置.最后运用nCode Designlife软件叶轮进行疲劳寿命预测,结果表明,最大应力位于叶片出口边缘与盖板交界的位置,且循环交变动应力是引起叶轮疲劳损伤的主要原因.叶轮满足无限寿命疲劳强度设计,叶轮无疲劳破坏风险.
AbstractList TH311; 综合考虑离心泵工作时叶轮真实的应力及变形状态,基于Ansys Workbench软件平台运用计算流体动力学分析软件CFX对离心泵模型叶轮进行了流固耦合数值模拟,计算了叶轮在离心力以及CFD压力载荷共同作用下离心泵叶轮强度,确定了在旋转过程中受到周期性交变应力的作用下,叶轮上最大应力的位置.最后运用nCode Designlife软件叶轮进行疲劳寿命预测,结果表明,最大应力位于叶片出口边缘与盖板交界的位置,且循环交变动应力是引起叶轮疲劳损伤的主要原因.叶轮满足无限寿命疲劳强度设计,叶轮无疲劳破坏风险.
Abstract_FL Considering the real stress and deformation state of impeller during the operation of centrifugal pump,the fluid-structure coupling numerical simulation of impeller of centrifugal pump model was carried out based on the software platform of Ansys Workbench and the com-putational fluid dynamics analysis software CFX.The strength of impeller of centrifugal pump under the combined action of centrifugal force and CFD pressure load was calculated.The position of the maximum stress on the impeller under the action of cyclic alternating stress during rotation is determined.Finally,nCode Designlife software was used to predict the fatigue life of the impeller.The results show that the maxi-mum stress is located at the interface between the blade outlet edge and the cover plate,and the cyclic cyclic stress is the main cause of the fatigue damage of the impeller.The impeller meets the design of infinite life fatigue strength,and the impeller has no risk of fatigue failure.
Author 宋文武
唐振海
欧铭
AuthorAffiliation 西华大学 流体及动力机械教育部重点实验室,四川 成都 610039;西华大学能源与动力工程学院,四川 成都 610039
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Author_FL OU Ming
SONG Wen-wu
TANG Zhen-hai
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DocumentTitle_FL An Analysis of Impeller Strength and Fatigue Life of Centrifugal Pump Based on Fluid-Structure Interaction Low Specific Speed
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Issue 10
Keywords 强度分析
叶轮
strength analysis
fluid-structure coupling
impeller
finite element
有限元
流固耦合
fatigue life
疲劳寿命
Language Chinese
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PublicationTitle 中国农村水利水电
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PublicationYear 2024
Publisher 西华大学能源与动力工程学院,四川 成都 610039
西华大学 流体及动力机械教育部重点实验室,四川 成都 610039
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Snippet TH311; 综合考虑离心泵工作时叶轮真实的应力及变形状态,基于Ansys Workbench软件平台运用计算流体动力学分析软件CFX对离心泵模型叶轮进行了流固耦合数值模拟,计算了叶轮在...
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Title 基于流固耦合低比转速离心泵叶轮强度及疲劳寿命分析
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