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High Voltage 2024年第2期9卷 380-390页

作者： Xinyu wang Ping wang Jianghai Geng Zikang Zhang Fangcheng Lü shuguo Gao Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense North China Electric Power UniversityBaodingChina State Grid Hebei Electric Power Research Institute ShijiazhuangChina

Transformers may suffer multiple short-circuit impacts during long-term operation,and axial instability is one of the typical types of serious accidents caused by short-circuit *** axial instability form of the winding-block structure is analysed,and the dynamic solution of the winding short-circuit electromagnetic force is obtained by estab-lishing the three-dimensional magnetic-circuit-force multi-physical field coupling simulation *** influence of strain rate on the cushion block constitutive equation is corrected,and the modified model is verified by short-circuit impact test and quasi-static *** research results show that for 110 kV 31.5 MVA transformers,the maximum electromagnetic axial resultant force of winding is 363.16 kN,and the ultimate tilt force is 1214.2 *** pre-tightening force configuration is accordingly recom-mended to range from 363.16 to 608.28 kN,which is narrowed by 18.49%compared with the static calculation method;Meanwhile,adding a logarithmic strain rate correction term to the classical constitutive equation of the cushion block can achieve a good correction of the stress-strain relationship with the coefficient of determination above 0.99,and the cushion block has a larger elastic modulus under high strain rate *** research results provide an important theoretical reference for the axial stability structure of transformers.

关键词： axial correction structure

REAL-TIME MOTION PLANNING METHOD BASED ON NEURAL NETWORKS FOR MULTIPLE MOBILE ROBOTS

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Chinese Journal of Mechanical Engineering 2001年第1期14卷 1-4页

作者： Zhan Qiang Zhang Qixian Robot Research Institute,Beijing University of Aeronautics and Astronautics wang shuguo Harbin Institute of Technology 北京航空航天大学机器人研究所北京哈尔滨工业大学黑龙江哈尔滨

The motion planning of multiple mobile robots undertaking individual tasks in the same environment is studied A motion planning method based on neural networks is proposed By storing fuzzy rules in neural networks the method can fully make use of the association ability and high processing speed of neural networks to make robots avoid collisions with other objects in real time Compared with rules method,the method can not only avoid building a large and complex rules base but also make robots avoid collisions and conflicts at higher speed and with higher intelligence

关键词： Multiple mobile robots Motion planning Fuzzy rules Neural networks

TOOL PATH PLANNING USING VORONOI DIAGRAM AND THREE STACKS

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Chinese Journal of Mechanical Engineering 2001年第4期14卷 314-318,341页

作者： Fu Zhuang,Liu Chengliang,Yin Yuehong,Cao Qixin,Ma Peixun (Research Institute of Robotics, Shanghai Jiaotong University) wang shuguo (Harbin Institute of Technology) 上海交通大学上海哈尔滨工业大学黑龙江

Based on the object oriented data structure of Voronoi diagram, the algorithm of the trimmed offset generating and the optimal too l path planning of the pocket machining for multiply connected polygonal domains are studied. The intersection state transition rule is improved in this algorithm. The intersection is between the trimmed offsets and Voronoi polygon. On this basis, the trimmed offset generating and the optimal tool path planning are mad e with three stacks(I stack, C stack and P stack)in different monotonous pouches of Voronoi diagram. At the same time, a merging method of Voronoi diagram an d offsets generating for multiply connected polygonal domains is also presented. The above algorithms have been implemented in NC machining successfully, and the efficiency is fully verified.

关键词： Voronoi diagram Monotonous pouches Stacks Tool path planning

24000TEU集装箱船特厚规格高强船板保心部低温冲击性能研究

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冶金标准化与质量 2024年第2期62卷 24-28页

作者：赵宇李文刚郑治龙牟凯王树国宋赞日钢营口中板有限公司营口115000 冶金工业信息标准研究院北京100730

为保证24000TEU集装箱船特厚规格高强船板保心部低温冲击性能,采用低碳+Ti+Nb+Ni的成分体系,即可保证强度,亦可保证较高要求的韧性。采用大变形量、低温控轧、DQ模式5 kg水冷,获得以针状铁素体(AF)/贝氏体(B)为主,并有少量的多边形铁素... 详细信息

为保证24000TEU集装箱船特厚规格高强船板保心部低温冲击性能,采用低碳+Ti+Nb+Ni的成分体系,即可保证强度,亦可保证较高要求的韧性。采用大变形量、低温控轧、DQ模式5 kg水冷,获得以针状铁素体(AF)/贝氏体(B)为主,并有少量的多边形铁素体的多相组织,心部冲击均值达到200 J以上。通过除鳞速度和道次的优化,解决特厚高强船板表面水纹花斑问题。成功研发保心部低温冲击性能的特厚规格高强船板,具有良好的强韧性能、焊接性能和表面质量。

关键词：特厚规格高强船板心部低温冲击

复杂运营条件下重载货车车轮磨耗发展的数值预测

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同济大学学报（自然科学版） 2019年第1期47卷 71-78页

作者：王璞王树国中国铁道科学研究院集团有限公司铁道建筑研究所北京100081

建立了复杂运营条件下重载货车车轮磨耗发展的数值预测模型,并编制了计算程序.基于Archard材料磨损理论,在车辆-轨道耦合动力学和轮轨滚动接触分析基础上进行磨耗分布计算;通过多工况仿真并引入权重因子来实现对实际复杂运营条件的模拟... 详细信息

建立了复杂运营条件下重载货车车轮磨耗发展的数值预测模型,并编制了计算程序.基于Archard材料磨损理论,在车辆-轨道耦合动力学和轮轨滚动接触分析基础上进行磨耗分布计算;通过多工况仿真并引入权重因子来实现对实际复杂运营条件的模拟;采用自适应步长算法进行车轮型面更新,可有效改善数值模型稳定性和可靠性.基于所建模型对大秦铁路实际运营条件下货车车轮的磨耗发展过程进行预测分析,结果表明:随运行里程增加各车轮磨耗均不断增大,但磨耗发展呈逐渐减缓趋势.各车轮磨耗主要分布在名义滚动圆两侧走行区域,起导向作用的车轮磨耗分布范围更宽.各车轮在靠近轮缘侧的磨耗发展均更快,导向轮对车轮这一特征更为明显.计算结果验证了模型的合理性.

关键词：重载铁路轮轨磨耗车辆-轨道耦合动力学轮轨接触数值迭代

重载铁路钢轨磨耗分布发展计算模型及影响因素研究

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振动与冲击 2018年第24期37卷 72-79页

作者：王璞王树国中国铁道科学研究院集团有限公司铁道建筑研究所北京100081

建立了钢轨磨耗数值计算模型,可实现磨耗具体分布及发展的定量预测分析。对货车轴重、速度及材料硬度对钢轨磨耗分布发展的影响进行了系统研究,弥补了既有研究多采用定性指标、无法定量分析对磨耗分布发展的影响的不足。主要结论:(1)轴... 详细信息

建立了钢轨磨耗数值计算模型,可实现磨耗具体分布及发展的定量预测分析。对货车轴重、速度及材料硬度对钢轨磨耗分布发展的影响进行了系统研究,弥补了既有研究多采用定性指标、无法定量分析对磨耗分布发展的影响的不足。主要结论:(1)轴重影响:直线运行时,随轴重的增加钢轨磨耗均呈马鞍状分布且马鞍状特征愈发显著,波峰磨耗深度逐渐增大而波谷磨耗深度逐渐减小,磨耗量总体呈增大趋势。曲线运行时两轨磨耗分布差异较大,随轴重的增加钢轨磨耗分布特征保持一致,幅值呈增大趋势。(2)速度影响:直线运行时,随车速的提高钢轨磨耗向轨头内侧扩展加宽,分布区域磨耗深度均呈增大趋势。曲线运行时,随车速的提高外轨轨肩磨耗幅值先减小后增大而轨顶磨耗变化较小,内轨磨耗明显下降。相对轴重而言车速对磨耗的影响更显著,从减磨角度同等条件下宜优先发展大轴重货车来实现扩能增效,并尽量减少重车方向大幅提速。(3)材料硬度影响:增大轮轨硬度对磨耗分布区域和形状影响不明显,但可显著降低磨耗幅值和磨耗量。但硬度过高易加速疲劳伤损,不一定能延长使用寿命。

关键词：钢轨磨耗重载铁路车辆-轨道耦合动力学车辆轴重运行速度材料硬度

Gastric signet-ring cell carcinoma with paraneoplastic eosinophilia: A case report and literature review

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Oncology and Translational Medicine 2022年第5期8卷 264-266页

作者： shuguo wang Haixia wang Ping Sui Bo Han Clinical Laboratory Qingdao Municipal Hospital(Group)Qingdao 266011China Department of Hematology Qingdao Hospital of Traditional Chinese Medicine(Qingdao Hiser Hospital)Qingdao 266033China Department of Medical Oncology The Affiliated Yuhuangding Hospital of Qingdao UniversityQingdao 264099China

We report the case of a 40-year-old female Chinese patient with gastric signet-ring cell carcinoma that was first diagnosed because of paraneoplastic *** patient’s eosinophil count reduced markedly to normal levels within 24 h after radical gastrectomy and Billroth II *** patient recovered well after the surgery and no abnormalities were found during the regular *** eosinophilia is an unusual manifestation that usually remains asymptomatic;moreover,cases of solid malignant tumors with eosinophilia are *** our knowledge,this is the first reported case of paraneoplastic eosinophilia in a patient with gastric *** considered eosinophilia as a manifestation of a paraneoplastic syndrome,which can be the first clinical manifestation of a malignancy.

关键词： eosinophilia paraneoplastic syndrome gastric signet-ring cell carcinoma

Study on wear characteristics and authorized limits of switch rails of high-speed turnout

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Railway Sciences 2023年第2期2卷 157-169页

作者： Pu wang shuguo wang Jing Ge Daolin Si Dongsheng Yang China Academy of Railway Sciences Corporation Limited Railway Engineering Research InstituteBeijingChina

Purpose-It is quite universal for high-speed turnouts to be exposed to the wear of the stock rail of the switch rail during the service *** wear will cause the change of railhead profile and the relative positions of the switch rail and the stock rail,which will directly affect the wheel-rail contact state and wheel load transition when a train passes the turnout and will further impose serious impacts on the safety and stability of train *** purpose of this paper is to provide suggestions for wear management of high-speed ***/methodology/approach-The actual wear characteristics of switch rails of high-speed turnouts in different guiding directions were studied based on the monitoring results on site;the authorized wear limits for the switch rails of high-speed turnout were studied through derailment risk analysis and switch rail strength ***-The results show that:the major factor for the service life of a curved switch rail is the lateral *** wear characteristics of the curved switch rail of a facing turnout are significantly different from those of a trailing *** be specific,the lateral wear of the curved switch rail mainly occurs in the narrower section at its front end for a trailing turnout,but in the wider section at its rear end when for a facing *** maximum lateral wear of a dismounted switch rail from a trailing turnout is found on the 15-mm wide section and is 3.9 mm,which does not reach the specified limit of 6 *** comparison,the lateral wear of a dismounted switch rail from a facing turnout is found from the 35-mm wide section to the full-width section and is greater than 7.5 mm,which exceeds the specified *** on this,in addition to meeting the requirements of maintenance rules,the allowed wear of switch rails of high-speed turnout shall be so that the dangerous area with a tangent angle of wheel profile smaller than 43.68 will not contact the switch rail when the wheel is lifted b

关键词： High-speed turnout Switch rail Wear characteristics Authorized limit Derailment Strength On-site monitoring

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客运专线道岔AT钢轨选型的研究

中国铁道科学 2008年第3期29卷 63-67页

作者：王树国葛晶中国铁道科学研究院铁道建筑研究所北京100081

道岔尖轨和可动心轨用矮型特种断面钢轨(简称AT钢轨)加工制造。配合CHN60钢轨,AT钢轨断面可有不同的选择。通过对国内外AT钢轨基本参数和使用情况的分析,依据道岔结构的要求,认为中国客运专线道岔用AT钢轨应该在CHN60AT钢轨、Zul-60钢轨... 详细信息

道岔尖轨和可动心轨用矮型特种断面钢轨(简称AT钢轨)加工制造。配合CHN60钢轨,AT钢轨断面可有不同的选择。通过对国内外AT钢轨基本参数和使用情况的分析,依据道岔结构的要求,认为中国客运专线道岔用AT钢轨应该在CHN60AT钢轨、Zul-60钢轨和60D钢轨中选择。对采用3种AT钢轨制造的尖轨的结构特点、强度、转换阻力以及不足位移等因素进行综合比选分析,并结合其他方面的要求及相关的技术标准,最终提出采用60D钢轨作为我国客运专线道岔AT钢轨的建议。在胶济线胶州北站的综合试验结果表明:采用60D钢轨制造的尖轨与CHN60钢轨的配合良好,转换阻力小于转辙机牵引力,且有较高的强度储备。

关键词：客运专线道岔 AT钢轨选型

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钢岔枕振动特性及结构优化研究

振动与冲击 2022年第17期41卷 18-24页

作者：王树国易强王猛王璞中国铁道科学研究院集团有限公司铁道建筑研究所北京100081

列车荷载作用下钢岔枕振动过大从而导致其稳定性较差,为了提高钢岔枕在道岔中的适用性,从振动特性和列车荷载作用下结构动态响应两个方面分析钢岔枕几何参数及扣件、道床刚度对钢岔枕振动的影响规律,探明影响钢岔枕振动的关键因素并提... 详细信息

列车荷载作用下钢岔枕振动过大从而导致其稳定性较差,为了提高钢岔枕在道岔中的适用性,从振动特性和列车荷载作用下结构动态响应两个方面分析钢岔枕几何参数及扣件、道床刚度对钢岔枕振动的影响规律,探明影响钢岔枕振动的关键因素并提出结构优化建议。研究结果表明,由于钢岔枕截面具有开口特征,使得结构刚度较低,容易出现截面扭转变形以及翘曲,通过增加钢岔枕底板的厚度,增大钢岔枕截面刚度,可有效控制由截面变形引起的钢岔枕振动响应。此外钢岔枕振动响应与扣件刚度和枕下道床刚度密切相关,相邻轨枕位置轨下动刚度的不均匀特征可形成钢岔枕-混凝土岔枕共振。为实现动刚度均匀化,可根据岔枕的质量设计合理的扣件刚度以及枕下支撑刚度,从而降低钢岔枕振动响应。最后基于车辆-道岔动力学耦合模型验证钢岔枕结构参数以及扣件刚度优化后的减振效果。

关键词：钢岔枕振动结构优化车辆-道岔耦合