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3D FEM SYSTEM FOR ANALYSIS OF NDUSTRIAL METAL FORMING PROCESSES

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中国有色金属学会会刊：英文版 1999年第2期9卷 39-44页

作者： Zuo, Xu Wei, Yuanping Chen, Jun Zeng, Lingshou ruan, xueyu Shanghai Jiao Tong Univ Shanghai China

１ＩＮＴＲＯＤＵＣＴＩＯＮＤｕｅｔｏｔｈｅｌａｃｋｏｆｓｙｓｔｅｍａｔｉｃａｎａｌｙｓｉｓｔｏｏｌｓ，ｍｅｔａｌｆｏｒｍｉｎｇｄｅｓｉｇｎｉｓｈｉｇｈｌｙｂａｓｅｄｏｎｅｍｐｉｒｉｃａｌｉｄｅａ，ｌｏｔｓｏｆｔｉｍｅ... 详细信息

１ＩＮＴＲＯＤＵＣＴＩＯＮＤｕｅｔｏｔｈｅｌａｃｋｏｆｓｙｓｔｅｍａｔｉｃａｎａｌｙｓｉｓｔｏｏｌｓ，ｍｅｔａｌｆｏｒｍｉｎｇｄｅｓｉｇｎｉｓｈｉｇｈｌｙｂａｓｅｄｏｎｅｍｐｉｒｉｃａｌｉｄｅａ，ｌｏｔｓｏｆｔｉｍｅｃｏｎｓｕｍｉｎｇａｎｄｅｘｐｅｎ...

关键词： bulk formingrigidviscoplastic finite element methodremeshing

SIMULATION OF CYLINDRICAL UPSETTING OF POROUS MATERIALS BY FINITE ELEMENT METHOD

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中国有色金属学会会刊：英文版 1998年第1期8卷 25-28,142页

作者： Zhang, Xingquan Peng, Yinghong ruan, xueyu Li, Miaoquan Wu, Shichun Shanghai Jiao Tong Univ Shanghai China

ＳＩＭＵＬＡＴＩＯＮＯＦＣＹＬＩＮＤＲＩＣＡＬＵＰＳＥＴＴＩＮＧＯＦＰＯＲＯＵＳＭＡＴＥＲＩＡＬＳＢＹＦＩＮＩＴＥＥＬＥＭＥＮＴＭＥＴＨＯＤ①ＺｈａｎｇＸｉｎｇｑｕａｎ，ＰｅｎｇＹｉｎｇｈｏｎｇａｎｄＲｕａｎＸｕｅｙ... 详细信息

ＳＩＭＵＬＡＴＩＯＮＯＦＣＹＬＩＮＤＲＩＣＡＬＵＰＳＥＴＴＩＮＧＯＦＰＯＲＯＵＳＭＡＴＥＲＩＡＬＳＢＹＦＩＮＩＴＥＥＬＥＭＥＮＴＭＥＴＨＯＤ①ＺｈａｎｇＸｉｎｇｑｕａｎ，ＰｅｎｇＹｉｎｇｈｏｎｇａｎｄＲｕａｎＸｕｅｙｕＮａｔｉｏｎａｌＤｉｅ＆Ｍｏｌｄ...

关键词： porous metal materials the critical technological parameters defects

Research on Key Techniques of Collaborative Design System

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High Technology Letters 2001年第2期7卷 51-53页

作者：李祥 Zhou Xonghui ruan xueyu Dept. of Plasticity Engineering Shanghai Jiaotong University

The development of product is a complex process. Collaboration is necessary to this process to support multi-function teams’ participation in this process at the same time. Effective task decomposition is the prerequisite of collaborative design and constraint network was used to express the relationship among design participants. In order to make the coupling collaborative design go smoothly, a constraint satisfaction model based on dynamic constraint is put forward. An integrated-based conflict resolution model is advanced to resolve the complex conflict during the process of collaborative design.

关键词： Collaborative design Constraint network Dynamic constraint Conflict resolution Integrated-based

Research on the integration of Web_-CNC and EIS

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Journal of Systems Engineering and Electronics 2005年第4期16卷 894-900页

作者： Zou Zeming Li Congxin ruan xueyu National Die & Mold CAD Engineering Research Center Shanghai Jiaotong Univ. Shanghai 200030 P. R. China

During the time of building enterprise information System （EIS）, agility of enterprise can＇ t be improved entirely just through implementing the system such as： ERP, PDM, CAPP and so on. There is an information gap between bottom rnannfacturing equipment and the top EIS, that makes against elevating the agility of enterprise. Building Web- CNC and realizing its integration with EIS is an effect way to solve this problem. The architecture of Web- CNC, the integration of Web- CNC and EIS are detailed. Lastly, an instance is analyzed and discussed.

关键词： enterprise information system information gap Web_ CNC integration.

SIX SIGMA OPTIMIZATION IN SHEET METAL FORMING BASED ON DUAL RESPONSE SURFACE MODEL

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Chinese Journal of Mechanical Engineering 2006年第2期19卷 251-255页

作者： LI Yuqiang CUI Zhenshan ZHANG Dongjuan ruan xueyu CHEN Jun National Die ＆ Mold CAD Engineering Research Center Shanghai Jiaotong UniversityShanghai 200030 China

Iterations in optimization and numerical simulation for the sheet metal forming process may lead to extensive computation. In addition, uncertainties in materials or processing parameters may have great influence on the design quality. A six sigma optimization method is proposed, by combining the dual response surface method （DRSM） and six sigma philosophy, to save computation cost and improve reliability and robustness of parts. Using this method, statistical technology, including the design of experiment and analysis of variance, approximate model and six sigma philosophy are integrated together to achieve improved quality. Two sheet metal forming processes are provided as examples to illustrate the proposed method.

关键词： Six sigma optimization Sheet metal forming Dual response surface

Interconnection of cellular autophagy and endosomal vesicle trafficking and its role in hepatitis B virus replication and release

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Virologica Sinica 2024年第1期39卷 24-30页

作者： Jia Li Yong Lin xueyu Wang Mengji Lu Institute for Virology University Hospital EssenUniversity of Duisburg-EssenEssen45122Germany Key Laboratory of Molecular Biology of Infectious Diseases(Chinese Ministry of Education) Chongqing Medical UniversityChongqing400016China The Key Laboratory for Diagnosis and Treatment of Infectious Diseases The First Affiliated HospitalCollege of MedicineZhejiang UniversityHangzhou310000China

Hepatitis B virus(HBV)produces and releases various particle types,including complete virions,subviral particles with envelope proteins,and naked capsids.Recent studies demonstrate that HBV exploits distinct intracellular membrane trafficking pathways,including the endosomal vesicle trafficking and autophagy pathway,to assemble and release viral and subviral particles.Herein,we summarize the findings about the distinct roles of autophagy and endosomal membrane trafficking and the interaction of both pathways in HBV replication,assembly,and release.

关键词： Amphisome Autophagy Endosomal vesicle Hepatitis B virus(HBV)

MODELLING OF P/M FORMING PROCESSES BY FEM

维普期刊数据库评论

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维普期刊数据库

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中国有色金属学会会刊：英文版 1995年第3期5卷 66-70页

作者： Wei, Yuanping ruan, xueyu(Department of Plasticity Technology,Shanghai Jiao Tong University, Shanghai 200030) Shanghai Jiao Tong Univ Shanghai China

ＭＯＤＥＬＬＩＮＧＯＦＰ／ＭＦＯＲＭＩＮＧＰＲＯＣＥＳＳＥＳＢＹＦＥＭ￥Ｗｅｉ，Ｙｕａｎｐｉｎｇ；Ｒｕａｎ，Ｘｕｅｙｕ（ＤｅｐａｒｔｍｅｎｔｏｆＰｌａｓｔｉｃｉｔｙＴｅｃｈｎｏｌｏｇｙ，ＳｈａｎｇｈａｉＪｉａｏＴｏｎ... 详细信息

ＭＯＤＥＬＬＩＮＧＯＦＰ／ＭＦＯＲＭＩＮＧＰＲＯＣＥＳＳＥＳＢＹＦＥＭ￥Ｗｅｉ，Ｙｕａｎｐｉｎｇ；Ｒｕａｎ，Ｘｕｅｙｕ（ＤｅｐａｒｔｍｅｎｔｏｆＰｌａｓｔｉｃｉｔｙＴｅｃｈｎｏｌｏｇｙ，ＳｈａｎｇｈａｉＪｉａｏＴｏｎｇＵｎｉｖｅｒｓｉｔｙ，Ｓｈａｎｇ...

关键词： modelling P/M forming FEM yield criteria constitutive

FEM　SIMULATION　OF　BIMETAL　FORMING　PROCESS　BASED　ON　FRICTIONAL　ELEMENT　TECHNOLOGY

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中国有色金属学会会刊：英文版 1996年第2期6卷 53-56页

作者： Peng Yinghong Wang Lidong Li Xiaochun ruan xueyu (Deptartment of Plasticity Technology, Shanghai Jiao Tong University, Shanghai 200030) Deptartment of Plasticity Technology Shanghai Jiao Tong University Shanghai 200030 China

ＦＥＭＳＩＭＵＬＡＴＩＯＮＯＦＢＩＭＥＴＡＬＦＯＲＭＩＮＧＰＲＯＣＥＳＳＢＡＳＥＤＯＮＦＲＩＣＴＩＯＮＡＬＥＬＥＭＥＮＴＴＥＣＨＮＯＬＯＧＹＰｅｎｇＹｉｎｇｈｏｎｇ；ＷａｎｇＬｉｄｏｎｇ；ＬｉＸｉａｏｃｈｕｎ；Ｒｕａ... 详细信息

ＦＥＭＳＩＭＵＬＡＴＩＯＮＯＦＢＩＭＥＴＡＬＦＯＲＭＩＮＧＰＲＯＣＥＳＳＢＡＳＥＤＯＮＦＲＩＣＴＩＯＮＡＬＥＬＥＭＥＮＴＴＥＣＨＮＯＬＯＧＹＰｅｎｇＹｉｎｇｈｏｎｇ；ＷａｎｇＬｉｄｏｎｇ；ＬｉＸｉａｏｃｈｕｎ；ＲｕａｎＸｕｅｙｕ（Ｄｅｐｔａｒｔｍｅｎ...

关键词： bimetal forming frictional element FEM simulation

Economic Risk Assessment of Future Debris Flows by Machine Learning Method

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International Journal of Disaster Risk Science 2024年第1期15卷 149-164页

作者： Chenchen Qiu Lijun Su Alessandro Pasuto Giulia Bossi xueyu Geng School of Engineering University of WarwickCoventry CV47ALUK Key Laboratory of Mountain Hazards and Earth Surface Process Institute of Mountain Hazards and EnvironmentChinese Academy of SciencesChengdu 610041China Research Institute for Geo-Hydrological Protection(IRPI-CNR) National Research Council of ItalyPadova 35127Italy

A reliable economic risk map is critical for effective debris-flow mitigation.However,the uncertainties surrounding future scenarios in debris-flow frequency and magnitude restrict its application.To estimate the economic risks caused by future debris flows,a machine learning-based method was proposed to generate an economic risk map by multiplying a debris-flow hazard map and an economic vulnerability map.We selected the Gyirong Zangbo Basin as the study area because frequent severe debris flows impact the area every year.The debris-flow hazard map was developed through the multiplication of the annual probability of spatial impact,temporal probability,and annual susceptibility.We employed a hybrid machine learning model-certainty factor-genetic algorithm-support vector classification-to calculate susceptibilities.Simultaneously,a Poisson model was applied for temporal probabilities,while the determination of annual probability of spatial impact relied on statistical results.Additionally,four major elements at risk were selected for the generation of an economic loss map:roads,vegetation-covered land,residential buildings,and farmland.The economic loss of elements at risk was calculated based on physical vulnerabilities and their economic values.Therefore,we proposed a physical vulnerability matrix for residential buildings,factoring in impact pressure on buildings and their horizontal distance and vertical distance to debrisflow channels.In this context,an ensemble model(XGBoost) was used to predict debris-flow volumes to calculate impact pressures on buildings.The results show that residential buildings occupy 76.7% of the total economic risk,while roadcovered areas contribute approximately 6.85%.Vegetation-covered land and farmland collectively represent 16.45% of the entire risk.These findings can provide a scientific support for the effective mitigation of future debris flows.

关键词： Economic risk Future debris fows Gyirong Zangbo Basin Machine learning model Physical vulnerability matrix Southwest Tibet,China