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Chinese Journal of Aeronautics 2024年第3期37卷 404-416页

作者： huibin sun Meng LIU Yingzhi ZHANG Chenle WEI Key Laboratory of High Performance Manufacturing for Aero Engine Ministry of Industry and Information TechnologyNorthwestern Polytechnical UniversityXi’an 710072China AECC South Industry Company Limited Zhuzhou 412002China

Due to the excellent self-centering and load-carrying capability,curvic couplings have been widely used in advanced aero-engine ***,curvic tooth surface errors lead to poor assembly *** physical-master-gauge-based indirect tooth surface error measurement and circumferential assembly angle optimization methods have the disadvantages of high cost and weak *** unknown tooth surface fitting mechanism is a big barrier to assembly precision prediction and ***,this work puts forward a data-driven assembly simulation and optimization approach for aero-engine rotors connected by curvic *** origin of curvic tooth surface error is deeply *** 5-axis sweep scan method,a large amount of high-precision curvic tooth surface data are acquired *** on geometric models of parts,the fitting mechanism of curvic couplings is uncovered for assembly precision simulation and prediction.A circumferential assembly angle optimization model is developed to decrease axial and radial assembly *** results show that the assembly precision can be predicted accurately and improved *** uncovering the essential principle of the assembly precision formation and proposing circumferential assembly angle optimization model,this work is meaningful for assembly quality,efficiency and economy improvement of multistage aero-engine rotors connected by curvic couplings.

关键词： Curvic couplings Tooth surface error Assembly precision Axial and radial runouts Circumferential assembly angle

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圆弧端齿齿面加工偏差对配合状态的影响

航空动力学报 2024年第5期39卷 253-261页

作者：孙帅孙惠斌付玄童浩颜诚西北工业大学机电学院航空发动机高性能制造工业和信息化部重点实验室西安710072 中国航发四川燃气涡轮研究院四川绵阳621000 中国航发南方工业有限公司湖南株洲412002

为了优化圆弧端齿装配工艺,对圆弧端齿齿面加工偏差对齿面配合状态的影响机理进行了研究。根据圆弧端齿加工原理,研究了关键成型参数对齿面偏差的影响规律,建立了圆弧端齿装配初始齿面间隙模型,研究了齿面偏差对端齿盘装配初始齿面间隙... 详细信息

为了优化圆弧端齿装配工艺,对圆弧端齿齿面加工偏差对齿面配合状态的影响机理进行了研究。根据圆弧端齿加工原理,研究了关键成型参数对齿面偏差的影响规律,建立了圆弧端齿装配初始齿面间隙模型,研究了齿面偏差对端齿盘装配初始齿面间隙的影响规律。理论研究和试验研究表明:齿面偏差是导致装配初始齿面间隙的直接原因。通过优化安装相位能使装配初始齿面间隙的均值减小18%,方差减小25%。为圆弧端齿连接结构装配精度形成原理与装配工艺优化研究提供基础,对于提高圆弧端齿连接的航空发动机转子装配品质具有重要的意义。

关键词：圆弧端齿装配工艺齿面偏差齿面间隙配合状态

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短精密螺栓连接结构组合偏心预测及安装相位优化

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航空动力学报 2024年第7期39卷 56-65页

作者：张譍之孙惠斌颜诚况侨西北工业大学航空发动机高性能制造工业和信息化部重点实验室西安710072 西北工业大学陕西省"四主体一联合"航空发动机智能装配技术校企联合研究中心西安710072 中国航发南方工业有限公司湖南株洲412002 中国陆装驻株洲地区航空军事代表室湖南株洲412002

为了有效提高短精密螺栓连接结构的装配精度,分析了两级盘组合后形心、质心偏心影响因素,阐述了两级盘配合过程中的平动转动行为和定心原理,建立了两级转子形心偏差预测模型、初始不平衡量预测模型.提出了以短精密螺栓连接的转子盘安装... 详细信息

为了有效提高短精密螺栓连接结构的装配精度,分析了两级盘组合后形心、质心偏心影响因素,阐述了两级盘配合过程中的平动转动行为和定心原理,建立了两级转子形心偏差预测模型、初始不平衡量预测模型.提出了以短精密螺栓连接的转子盘安装相位为变量,形心偏心和初始不平衡量最小为优化为目标的工艺优化模型,通过实物实验进行了验证.结果表明:形心偏差模长最大相对误差为13.28%,组合不平衡量的计算结果精度最大提高了 37.3%,工艺优化结果与实验结果相符,对于短精密螺栓连接结构装配工艺优化具有重要的参考意义.

关键词：短精密螺栓同心度不平衡量安装相位工艺优化

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双头螺柱脱扣失效原因分析及装配工艺优化

航空制造技术 2024年第3期67卷 89-95页

作者：付玄孙惠斌刘自成徐广庆童浩中国航发四川燃气涡轮研究院绵阳621000 西北工业大学西安710072

针对目前某型航空发动机中介机匣单元体上双头螺柱松动脱扣问题,从安装强度、外加载荷、制造缺陷等方面进行全面的故障原因分析和排查,得出主要原因为自锁螺母分解力矩大于相配双头螺柱的安装力矩;其次流道高温、机体振动都将进一步加... 详细信息

针对目前某型航空发动机中介机匣单元体上双头螺柱松动脱扣问题,从安装强度、外加载荷、制造缺陷等方面进行全面的故障原因分析和排查,得出主要原因为自锁螺母分解力矩大于相配双头螺柱的安装力矩;其次流道高温、机体振动都将进一步加剧双头螺柱的疲劳失效,并在此基础上提出基于温差及振动组合方式的双头螺柱装配工艺方法,即首先对螺柱进行加热处理,然后在拧紧过程中对螺柱添加轴向高频振动。通过对比试验及应用验证,双头螺柱的平均脱扣失效故障率从21.6%降低至3.2%,证明上述工艺方法能有效提高双头螺柱装配质量,在不破坏螺纹牙配合质量的情况下增加双头螺柱的安装强度及稳定性,从而大幅度减小双头螺柱脱扣失效情况的出现,保证了航空发动机试验及飞行过程中的安全性和可靠性。

关键词：航空发动机双头螺柱脱扣失效温差装配高频振动

Pulse control of frequency and width for a real-time independently adjustable laser source

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Frontiers of Information Technology & Electronic Engineering 2021年第10期22卷 1379-1389页

作者： Zhiwei YANG Xu WU Deqin OUYANG Encheng ZHANG huibin sun Shuangchen RUAN Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics Engineering College of Physics Science and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China College of Sino-German Intelligent Manufacturing Shenzhen Technology UniversityShenzhen 518118China

A set of semiconductor laser pulse seed sources based on an embedded chip is *** greatest feature is that the optical pulse frequency and width can be independently adjusted in real *** pulse seed sources can be switched independently and online from the gain-switched mode to the quasi-continuous wave mode to obtain optimal optical parameters for specific *** explore the physical mechanism of the semiconductor laser source,the rate equation that describes the carrier-photon transient change in a semiconductor laser cavity is numerically derived and ***,problems that need to be considered while designing the drive circuit are *** system evaluation indicates that the optical pulse frequency adjustment range is 250 Hz to 42 MHz,and the narrowest optical pulse output width is 80 *** pulse seed source can drive semiconductor lasers with different central wavelengths(1064,1550,and 1970 nm),and can also simultaneously drive two semiconductor lasers and output dual-band optical *** can be used as a seed source for general high-power optical systems,and exhibits good application value and extensive market prospects.

关键词： Electric variable control Electronic design automation and methodology Optical pulse generation Optical control

两种药物治疗飞行人员根尖周炎伴窦道的疗效观察

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空军航空医学 2024年第1期41卷 13-16页

作者：丁立吴广升孙慧斌惠光艳张卓然王飞刘伟马丛丛海军青岛特勤疗养中心疗养二区口腔科青岛266071 青岛大学附属医院口腔医学中心牙体牙髓科青岛266003

目的研究Vitapex糊剂与氢氧化钙糊剂治疗飞行人员根尖周炎伴窦道的疗效。方法纳入2019年1月—2022年1月在海军青岛特勤疗养中心疗养的飞行人员,将经过口腔体检收治的60例患根尖周炎者作为研究对象,按随机数字表法分为对照组和观察组,各3... 详细信息

目的研究Vitapex糊剂与氢氧化钙糊剂治疗飞行人员根尖周炎伴窦道的疗效。方法纳入2019年1月—2022年1月在海军青岛特勤疗养中心疗养的飞行人员,将经过口腔体检收治的60例患根尖周炎者作为研究对象,按随机数字表法分为对照组和观察组,各30例。对照组采用氢氧化钙糊剂进行根管诊间封药;观察组采用Vitapex糊剂进行根管诊间封药。观察2组根管预备后诊间封药的治疗效果、炎症因子水平和不良反应等。结果观察组的总有效率高达100.00%,对照组的总有效率为76.67%,观察组总有效率高于对照组,差异有统计学意义(χ^(2)=5.822,P=0.016)。治疗前2组各炎症因子水平对比差异无统计学意义(t=0.079、0.112、0.261,P=0.938、0.911、0.795);治疗后2周,观察组各炎症因子水平均低于对照组,差异有统计学意义(t=2.925、2.516、9.068,P=0.005、0.015、<0.001)。2组不良反应包括局部肿胀、感染和咬合痛。观察组不良反应发生率为10.00%,对照组不良反应发生率为3.33%,2组不良反应发生率对比差异无统计学意义(χ^(2)=0.268,P=0.605)。结论Vitapex糊剂治疗根尖周炎效果较好,能明显控制飞行人员患牙的细菌感染,使飞行人员尽快恢复工作,为航卫保障提供有利支持。

关键词：飞行人员根尖周炎 Vitapex糊剂氢氧化钙糊剂临床疗效

Multiple-Stimuli Responsive Luminescent Gels Based on Cholesterol Containing Benzothiadiazole Fluorophores

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Chinese Journal of Chemistry 2015年第10期33卷 1140-1144页

作者： huibin sun Shujuan Liu Qiang Zhao Wei Huang Key Laboratory for Organic Electronics and lnformation Displays & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing University of Posts & Telecommunications Nanjing 210023 Jiangsu China Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu NationalSynergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NanjingTech) Nanjing 211816 Jiangsu China

Two new fluorescent organogelators based on cholesterol containing benzothiadiazole group have been de- signed and synthesized. Three methods for gels preparation have been presented, such as heating-cooling process, ultrasonic treatment and mixed solvents under room temperature. For both of the gels, their states and emission col- ors exhibit striking changes upon addition of Hg^2＋. The gelation properties, structural characteristics and fluores- cence of the gels were studied by FT-IR, UV-Vis absorption and PL spectra. The underlying mechanism of gelation property was studied by X-ray diffraction combined with theoretical calculation, and the important role of π-π in- teractions in forming the gels has been proved.

关键词： organogel nanofibers nanotubes fluorescence sensor

Characterization of Nucleation Behavior in Temperature-Induced BCC-to-HCP Phase Transformation for High Entropy Alloy

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Acta Metallurgica Sinica(English Letters) 2021年第11期34卷 1546-1556页

作者： Xiusong Huang Lehua Liu Weibing Liao Jianjun Huang huibin sun Chunyan Yu College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials South China University of TechnologyGuangzhou 510640China

Phase transformation is one of the essential topics in the studies on high entropy alloys(HEAs).However,characterization of the nucleation behavior in the phase transformation for HEAs is still challenging through experimental *** the present work,HfNbTaTiZr HEA was chosen as the representative material,and molecular dynamics/Monte Carlo(MD/MC)simulations were performed to investigate the nucleation behavior in temperature-induced BCC-to-HCP transformation for this HEA *** results indicate that Nb–Ta,Ti–Zr,Hf–Zr and Hf–Ti atom pairs are preferred in the BCC solid solution of HfNbTaTiZr HEA and Hf–Ti–Zr-rich atom cluster with chemical short range order acts as the nucleation site for HCP *** nucleation process follows the non-classical two-step nucleation model:BCC-like structure with severe lattice distortion forms first and then HCP structure nucleates from the BCC-like ***,at low temperature,the BCC-to-HCP nucleation hardly occurs,and the BCC solid solution is *** present work provides more atomic details of the nucleation behavior in temperature-induced BCC-to-HCP phase transformation for HEA,and can help in deep understanding of the phase stability for HEAs.

关键词： Atomistic characterization Nucleation Lattice distortion Chemical short-range order HfNbTaTiZr High entropy alloys

A tip clearance prediction model for multistage rotors and stators in aero-engines

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Chinese Journal of Aeronautics 2021年第2期34卷 343-357页

作者： huibin sun Jing WANG Kai CHEN Huateng XIA Xin FENG Zhiyong CHANG Key Laboratory of High Performance Manufacturing for Aero Engine Ministry of Industry and Information TechnologyNorthwestern Poly technical UniversityXi'an 710072China AECC South Industry Company Limited Zhuzhou 412002China

Tip clearances of multistage rotors and stators greatly affect aero-engines’ aerodynamic efficiency, stability and safety. The inevitable machining and assembly errors, as well as the complicated error propagation mechanism, cause overproof or non-uniform tip clearances. However, it is generally accepted that tip clearances are difficult to predict, even under assembly state. In this paper, a tip clearance prediction model is proposed based on measured error data. Some 3 D error propagation sub-models, regarding rotors, supports and casings, are built and combined. The complex error coupling relationship is uncovered using mathematical methods. Rotor and stator tip clearances are predicted and analyzed in different phase angles. The maximum, minimum and average tip clearances can be calculated. The proposed model is implemented by a computer program,and a case study illustrates its performance and verifies its feasibility. The results can be referred by engineers in assembly quality judgement and decision-making.

关键词： Tip clearance Prediction Error propagation model Rotor and stator Aero-engine Assembly

环氧树脂对透水混凝土的力学性能和渗透性能的影响研究

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功能材料 2022年第9期53卷 9080-9084页

作者：赵静王昳昀孙慧斌河北工程技术学院建筑与设计学院石家庄050091

在制备透水混凝土时引入环氧树脂(E42型),通过改变环氧树脂的掺杂含量,制备出一系列不同含量环氧树脂(0,1%,3%和5%(质量分数))的透水混凝土,对其力学性能、透水系数、微观形貌和孔隙率等进行了表征。结果表明,当环氧树脂的掺杂含量为3%... 详细信息

在制备透水混凝土时引入环氧树脂(E42型),通过改变环氧树脂的掺杂含量,制备出一系列不同含量环氧树脂(0,1%,3%和5%(质量分数))的透水混凝土,对其力学性能、透水系数、微观形貌和孔隙率等进行了表征。结果表明,当环氧树脂的掺杂含量为3%(质量分数)时,样品7和28 d的抗压强度达到了最大值,分别为9.66和11.41 MPa;样品28 d的抗折强度达到了最大值,为1.92 MPa;样品的透水系数和孔隙率均达到了最低值,分别为4.70 mm/s和22.7%。SEM分析发现,未掺杂环氧树脂的透水混凝土有明显的孔洞,当环氧树脂的掺杂含量为3%(质量分数)时,基本无明显的孔洞裂痕,断裂面也较为平整,说明掺入适量的环氧树脂后,明显改善了透水混凝土的微观形貌,使水化产物之间的结合更紧密,在受到载荷时各颗粒间的强结合不会使其轻易产生裂痕,从而提高了透水混凝土的力学性能。综合分析可知,环氧树脂的最佳掺杂量为3%(质量分数)。

关键词：环氧树脂透水混凝土力学性能渗透性能孔隙率