Query：
学者姓名：孙国芹
Refining：
Year
Type
Indexed by
Source
Complex
Co-Author
Language
Clean All
Abstract ：
Titanium alloy is widely used in aerospace and other fields due to its low density, high specific strength, corrosion resistance, and other advantages. With the development of selective laser melting additive manufacturing technology, it is possible to manufacture triply periodic minimal surface porous structures. The effects of structural parameters on the mechanical properties of a Ti-6Al-4V Diamond (D)-type triply periodic minimal surface structure are studied. According to the characteristics of porous structures, the Gibson Ashby fitting formulas of D structures are modified using the concept of equivalent cross-sectional areas. The influence of cell size and surface thickness on the compressive modulus and strength of a D structure is discussed. Prediction formulas of the mechanical properties based on cell size and surface thickness are established by combining the relative density with the structural parameters. On this basis, the density optimization method is applied to the lightweight design of a rocket-related assembly based on D structure filling. The design results verify the feasibility of a lightweight design based on triply periodic minimal surface structure filling.
Keyword ：
lightweight design lightweight design triply periodic minimal surface structure triply periodic minimal surface structure structural parameters structural parameters mechanical property mechanical property
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Chen, Xiusi , Sun, Guoqin , Zhu, Jiaqi et al. Influence of Structural Parameters on Mechanical Properties of Triply Periodic Minimal Surface Structure [J]. | METALS , 2023 , 13 (2) . |
| MLA | Chen, Xiusi et al. "Influence of Structural Parameters on Mechanical Properties of Triply Periodic Minimal Surface Structure" . | METALS 13 . 2 (2023) . |
| APA | Chen, Xiusi , Sun, Guoqin , Zhu, Jiaqi , Kang, Wei , Shang, Deguang , Deng, Zhanfeng . Influence of Structural Parameters on Mechanical Properties of Triply Periodic Minimal Surface Structure . | METALS , 2023 , 13 (2) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
Multiaxial high-cycle fatigue failure criterion and life prediction is important for structural components under complex low stress. A new multiaxial high-cycle fatigue damage parameter based on the plane of maximum shear stress is proposed, which includes the maximum shear stress amplitude, normal stress amplitude and maximum equivalent normal stress. The maximum equivalent normal stress is defined in the form of SWT stress function considering the influence of mean stress. The feasibility of the proposed failure criterion and life prediction model is verified by test data of different materials. The predicted results show that the life prediction error of the proposed fatigue model is basically within three times by comparing with McDiarmid, Matake, Crossland and Papadopoulos fatigue models. © The Author(s) 2022.
Keyword ：
fatigue failure criterion; high cycle; life prediction method; maximum equivalent stress; Multiaxial fatigue fatigue failure criterion; high cycle; life prediction method; maximum equivalent stress; Multiaxial fatigue
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang, Y. , Sun, G.-Q. , Liu, J. et al. Multiaxial high-cycle fatigue failure and life prediction based on critical plane method [J]. | International Journal of Damage Mechanics , 2022 , 31 (8) : 1165-1186 . |
| MLA | Wang, Y. et al. "Multiaxial high-cycle fatigue failure and life prediction based on critical plane method" . | International Journal of Damage Mechanics 31 . 8 (2022) : 1165-1186 . |
| APA | Wang, Y. , Sun, G.-Q. , Liu, J. , Liu, X. , Shang, D. . Multiaxial high-cycle fatigue failure and life prediction based on critical plane method . | International Journal of Damage Mechanics , 2022 , 31 (8) , 1165-1186 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
In this paper, a new life assessment framework is proposed based on the elastic-viscoplastic modeling and the damage behavior for the structural component under multiaxial nonproportional loading at high temperature. The viscoplastic constitutive model with the ability to capture the non-proportional hardening effect is used to obtain the stress-strain fields, in which a new method based on the rotation of strain axis is proposed to evaluate the notch rotation factor. The damage model, which can comprehensively capture the multiaxial fatigue-oxidationcreep behaviors, is used to assess the failure life. In addition, the proposed framework is evaluated by the life results under proportional and non-proportional fatigue loadings at 650 degrees C, and the errors are found to be within a factor of 2.
Keyword ：
Multiaxial loading Multiaxial loading Elastic-viscoplastic Elastic-viscoplastic Non-proportional hardening Non-proportional hardening Fatigue-oxidation-creep damage Fatigue-oxidation-creep damage Notch Notch
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Li, Dao-Hang , Shang, De-Guang , Yin, Xiang et al. A novel fatigue-oxidation-creep life prediction method under non-proportional loading [J]. | ENGINEERING FAILURE ANALYSIS , 2022 , 131 . |
| MLA | Li, Dao-Hang et al. "A novel fatigue-oxidation-creep life prediction method under non-proportional loading" . | ENGINEERING FAILURE ANALYSIS 131 (2022) . |
| APA | Li, Dao-Hang , Shang, De-Guang , Yin, Xiang , Li, Ming , Chen, Feng , Sun, Guo-Qin et al. A novel fatigue-oxidation-creep life prediction method under non-proportional loading . | ENGINEERING FAILURE ANALYSIS , 2022 , 131 . |
| Export to | NoteExpress RIS BibTex |
Keyword ：
numerical simulation numerical simulation fatigue crack initiation fatigue crack initiation microstructure microstructure porosity porosity additive materials additive materials
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Sun, Guoqin , Yu, Huimin , Guo, Yicheng et al. Experimental and crystal plasticity simulation on fatigue crack of wire and arc additively manufactured aluminum alloy [J]. | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES , 2021 , 45 (2) : 620-624 . |
| MLA | Sun, Guoqin et al. "Experimental and crystal plasticity simulation on fatigue crack of wire and arc additively manufactured aluminum alloy" . | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES 45 . 2 (2021) : 620-624 . |
| APA | Sun, Guoqin , Yu, Huimin , Guo, Yicheng , Liu, Xiaodong , Shang, Deguang , Chen, Shujun . Experimental and crystal plasticity simulation on fatigue crack of wire and arc additively manufactured aluminum alloy . | FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES , 2021 , 45 (2) , 620-624 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
电弧增材技术具有低成本和效率高的优点,考虑到增材件内部孔隙缺陷,考虑用损伤力学的方法进行分析。本文基于连续损伤力学对铝合金电弧增材件的疲劳行为进行数值模拟,当施加应力幅为300Mpa、应力比为-1的疲劳载荷时,增材件的寿命为410周。
Keyword ：
损伤力学 损伤力学 疲劳 疲劳 电弧增材 电弧增材
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 于慧敏 , 孙国芹 . 基于连续损伤力学的铝合金电弧增材制造件疲劳模拟 [C] //北京力学会第二十七届学术年会论文集 . 2021 . |
| MLA | 于慧敏 et al. "基于连续损伤力学的铝合金电弧增材制造件疲劳模拟" 北京力学会第二十七届学术年会论文集 . (2021) . |
| APA | 于慧敏 , 孙国芹 . 基于连续损伤力学的铝合金电弧增材制造件疲劳模拟 北京力学会第二十七届学术年会论文集 . (2021) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
以Newman方程为基础,对裂纹应力强度因子进行计算,用断裂力学方法对恒幅加载条件下7075铝合金FSW接头不同应力比和不同应力水平下疲劳寿命进行预测。通过实验结果对比发现,80%以上的预测寿命在2倍因子之内。
Keyword ：
寿命预测 寿命预测 搅拌摩擦焊 搅拌摩擦焊 断裂力学 断裂力学
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 刘金峰 , 孙国芹 . 基于裂纹闭合的搅拌摩擦焊恒幅疲劳寿命预测 [C] //北京力学会第二十七届学术年会论文集 . 2021 . |
| MLA | 刘金峰 et al. "基于裂纹闭合的搅拌摩擦焊恒幅疲劳寿命预测" 北京力学会第二十七届学术年会论文集 . (2021) . |
| APA | 刘金峰 , 孙国芹 . 基于裂纹闭合的搅拌摩擦焊恒幅疲劳寿命预测 北京力学会第二十七届学术年会论文集 . (2021) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
本文基于ABAQUS软件对铝合金电弧增材件进行多裂纹扩展模拟仿真,随着循环载荷的施加,裂纹的长度在不断加大,实现了多条裂纹扩展并且逐渐聚合成一条主裂纹,随着主裂纹的不断增加,最终导致了试件的断裂。
Keyword ：
模拟仿真 模拟仿真 多裂纹扩展 多裂纹扩展 铝合金电弧增材件 铝合金电弧增材件
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 王旭 , 孙国芹 . 铝合金电弧增材件多裂纹扩展模拟分析 [C] //北京力学会第二十七届学术年会论文集 . 2021 . |
| MLA | 王旭 et al. "铝合金电弧增材件多裂纹扩展模拟分析" 北京力学会第二十七届学术年会论文集 . (2021) . |
| APA | 王旭 , 孙国芹 . 铝合金电弧增材件多裂纹扩展模拟分析 北京力学会第二十七届学术年会论文集 . (2021) . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
多轴疲劳损伤行为和寿命预测研究关系着复杂加载条件下金属结构件的服役安全,一直受到科学和工程领域的重视。总结多轴低周和高周疲劳试验性能测试一般过程和疲劳行为研究,重点论述多轴非比例加载对低周疲劳和高周疲劳行为的影响,受加载路径,加载载荷和材料类型的影响,非比例加载对材料低周疲劳循环硬化行为和疲劳寿命的影响有差异,对低周疲劳和高周疲劳表现的疲劳行为的影响也有差别,作用机理不尽一致。单轴本构关系通过引入非比例度因子、修正循环强度系数或将多轴加载时的应变等效为单轴应变等方式可推广到多轴疲劳领域。基于应力、应变、能量、临界面和临界面应变能密度法的多轴疲劳寿命预测模型在文中做了综述,疲劳损伤参量中包含能量...
Keyword ：
疲劳行为 疲劳行为 寿命预测模型 寿命预测模型 非比例加载 非比例加载 缺口件 缺口件 多轴疲劳 多轴疲劳
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 孙国芹 , 尚德广 , 王杨 . 金属多轴疲劳行为与寿命预测研究进展 [J]. | 机械工程学报 , 2021 , 57 (16) : 153-172 . |
| MLA | 孙国芹 et al. "金属多轴疲劳行为与寿命预测研究进展" . | 机械工程学报 57 . 16 (2021) : 153-172 . |
| APA | 孙国芹 , 尚德广 , 王杨 . 金属多轴疲劳行为与寿命预测研究进展 . | 机械工程学报 , 2021 , 57 (16) , 153-172 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
一种四自由度柔性夹具装置，涉及航空技术领域，包括三自由度随动机构和柔性夹具。所述三自由度随动机构包括三自由度随动机构底部主体和三自由度随动机构浮动板，所述三自由度随动机构浮动板包括薄壁无盖方盒、直线轴承、导杆、压缩弹簧、旋转导程滚子、平动限位销、平动滚子，所述三自由度随动机构浮动板通过所述压缩弹簧作用有自回中趋势并可保持在中心对称位置。本发明四自由度柔性夹具装置结构简单，控制精度高，实现了对多种型号舱段的快速自动定位夹紧和周向旋转位姿的自动控制，解决了人工操作复杂、劳动强度高、效率低下的问题，同时三自由度随动机构的设计减小了待对接舱段在对接过程中产生的应力，从而保护产品的安全和质量。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 许东来 , 卢超伟 , 杨巨辉 et al. 一种四自由度柔性夹具装置 : CN202110370131.9[P]. | 2021-04-06 . |
| MLA | 许东来 et al. "一种四自由度柔性夹具装置" : CN202110370131.9. | 2021-04-06 . |
| APA | 许东来 , 卢超伟 , 杨巨辉 , 刘星 , 孙国芹 , 孙搏 et al. 一种四自由度柔性夹具装置 : CN202110370131.9. | 2021-04-06 . |
| Export to | NoteExpress RIS BibTex |
Abstract ：
一种焊接结构多轴疲劳失效寿命评估方法，属于机械结构诊断分析技术领域。利用有限元软件对待测定焊接结构进行不同加载情况下进行模拟，获得从焊趾到距焊趾40mm内所有应力张量的热点应力拟合曲线，计算得到焊趾热点应力区域内的平均应力作为等效热点应力。以最大剪应力幅所在平面为临界面，提出一种新的多轴寿命预测方法，不仅考虑到多轴疲劳的破坏机理，同时考虑焊接接头应力集中效应。利用得到的所有等效热点应力张量确定临界平面，计算临界平面上的剪应力幅值和法向应力幅值，代入寿命预测模型中，进而得到焊接接头的多轴疲劳失效寿命。
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | 孙国芹 , 王杨 , 付振豪 . 一种焊接结构多轴疲劳失效寿命评估方法 : CN202111628222.4[P]. | 2021-12-28 . |
| MLA | 孙国芹 et al. "一种焊接结构多轴疲劳失效寿命评估方法" : CN202111628222.4. | 2021-12-28 . |
| APA | 孙国芹 , 王杨 , 付振豪 . 一种焊接结构多轴疲劳失效寿命评估方法 : CN202111628222.4. | 2021-12-28 . |
| Export to | NoteExpress RIS BibTex |
Export
| Results： |
Selected to |
| Format： |
