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可制造性设计检查在实际生产过程中的应用研究

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计算机应用文摘 2024年第1期40卷 65-67页

作者：徐小飞陆凯雷刘春桂高静韩松健常州博瑞电力自动化设备有限公司江苏常州213025

作为设计必须涉及的领城之一,可制造性设计是从制造角度设计PCB板的标准,被视为产品制造与设计间的沟通语言,文章对可制造性设计检查在实际生产过程中的应用展开了研究。其中,dfm系统在设计阶段即可消除产品的质量问题,从而在实现利润... 详细信息

作为设计必须涉及的领城之一,可制造性设计是从制造角度设计PCB板的标准,被视为产品制造与设计间的沟通语言,文章对可制造性设计检查在实际生产过程中的应用展开了研究。其中,dfm系统在设计阶段即可消除产品的质量问题,从而在实现利润最大化的同时保障生产的顺畅性。

关键词： dfm 可制造性分析模型建库

The role of natural fracture activation in hydraulic fracturing for deep unconventional geo-energy reservoir stimulation

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Petroleum Science 2023年第4期20卷 2141-2164页

作者： Jun Wang He-Ping Xie Stephan KMatthai Jian-Jun Hu Cun-Bao Li Guangdong Provincial Key Laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and Utilization Institute of Deep Earth Sciences and Green EnergyShenzhen UniversityShenzhen518060GuangdongPR China Shenzhen Key Laboratory of Deep Engineering Sciences and Green Energy College of Civil and Transportation EngineeringShenzhen UniversityShenzhen518060GuangdongPR China Department of Infrastructure Engineering University of MelbourneMelbourneVIC3010Australia MOE Laboratory of Deep Earth Science and Engineering Sichuan UniversityChengdu610065SichuanPR China

The presence of sealed or semi-sealed,multiscale natural fracture systems appears to be crucial for the successful stimulation of deep reservoirs.To explore the reaction of such systems to reservoir stimulation,a new numerical simulation approach for hydraulic stimulation has been developed,trying to establish a realistic model of the physics involved.Our new model successfully reproduces dynamic fracture activation,network generation,and overall reservoir permeability enhancement.Its outputs indicate that natural fractures facilitate stimulation far beyond the near-wellbore area,and can significantly improve the hydraulic conductivity of unconventional geo-energy reservoirs.According to our model,the fracture activation patterns are jointly determined by the occurrence of natural fractures and the in situ stress.High-density natural fractures,high-fluid pressure,and low effective stress environments promote the formation of complex fracture networks during stimulation.Multistage or multicluster fracturing treatments with an appropriate spacing also increase the stimulated reservoir area(SRA).The simulation scheme demonstrated in this work offers the possibility to elucidate the complex multiphysical couplings seen in the field through detailed site-specific modeling.

关键词： Natural fractures dfm Unconventional geo-energy reservoir Fracture reactivation Hydraulic stimulation

Effects of pattern characteristics on the copper electroplating process

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Journal of Semiconductors 2011年第5期32卷 130-133页

作者：阮文彪陈岚李志刚叶甜春马天宇王强 Institute of Microelectronics Chinese Academy of Sciences

The non-planarity of a surface post electroplating process is usually dependent on variations of key layout characteristics including line width, line spacing and metal density. A test chip is designed and manufactured in a semiconductor foundry to test the layout dependency of the electroplating process. By checking test data such as field height, array height, step height and SEM photos, some conclusions are made. Line width is a critical factor of topographical shapes such as the step height and height difference. After the electroplating process, the fine line has a thicker copper thickness, while the wide line has the greatest step height. Three typical topographies, conformal-fill, supper-fill and over-fill, are observed. Moreover, quantified effects are found using the test data and explained by theory, which can be used to develop electroplating process modeling and design for manufacturability （dfm） research.

关键词： ULSI electroplating CEAC pattern dependency systematic variations dfm

Detecting the electrical conductivity of single walled carbon nano-tubes by a dfm detection system

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Science China(Technological Sciences) 2014年第1期57卷 49-54页

作者： ZHAO ZengXu TIAN XiaoJun LIU Jie DONG ZaiLi WANG YueChao State Key Laboratory of Robotics Shenyang Institute of Automation (SIA) Chinese Academy of Scicence University of Chinese Academy of Sciences

Rare SWCNT materials contain both metallic SWCNT(m-SWCNT)and semi-conducting SWCNT(s-SWCNT).Since mSWCNT and s-SWCNT have very different applications,it is necessary to differentiate them so as to further separate them for more efficient CNT utilization.To achieve this goal,the authors established a dielectric force microscope(dfm)detection system to differentiate s-SWCNT from m-SWCNT,based on different 2 force decided by SWCNT’s conductivity under AC electric field.The experimental results showed that s-SWCNT can be clearly differentiated from m-SWCNT.The statistics analysis shows that the detected number proportion of s-SWCNT to m-SWCNT matches the well-known proportion 2:1 in the normally prepared CNT materials.The above results strongly verified the effectiveness of the detection system.

关键词：单壁碳纳米管检测系统 dfm 电导率探测碳纳米管材料交流电场统计分析

Study on boundary search method for dfm mesh generation

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China Foundry 2012年第3期9卷 231-233页

作者： Li Ri Li Fei Zhang Jianqiang Shen Fatian Institute of Materials Science and Technology Hebei Universityof TechnologyTianjinChina

The boundary mesh of the casting model was determined by direct calculation on the triangular facets extracted from the STL file of the 3D model. Then the inner and outer grids of the model were identified by the algorithm in which we named Inner Seed Grid Method. Finally, a program to automatically generate a 3D FDM mesh was compiled. In the paper, a method named Triangle Contraction Search Method (TCSM) was put forward to ensure not losing the boundary grids; while an algorithm to search inner seed grids to identify inner/outer grids of the casting model was also brought forward. Our algorithm was simple, clear and easy to construct program. Three examples for the casting mesh generation testified the validity of the program.

关键词： dfm mesh generation boundary search method triangle plane contraction search

A new dfm flow for sub-100nm standard cells

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High Technology Letters 2006年第1期12卷 6-9页

作者：史峥 Yan Xiaolang Zhang Peiyong Ji Xuemei Institute of VLSI Design Zhejiang University Hangzhou 310027 P.R. China

dfm (design-for-manufacturability) method, which aims to improve manufacturability of ICs through specific design considerations, is becoming important nowadays. In particular, standard cells now should be designed by dfm method. This paper reports a dfm flow for sub-100 nm standard cell design with a group of technologies for process modeling, manufacturability simulation and trial RETs. Based on this flow, a set of dfm-friendly 90m standard cells were designed.

关键词：工艺设计 dfm RET OPC 标准电池

Reanalysis of Elastic Scattering of ~6Li + ^(209)Bi Reaction Using a New DensityDistribution of ~6Li Nucleus

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Communications in Theoretical Physics 2013年第7期60卷 69-72页

作者： M. Aygun Department of Physics Bitlis Eren University

In the present paper, the elastic scattering of6 Li + 209 Bi system is reanalyzed by using the double folding model (dfm) at energies near the Coulomb barrier (ELab=29.9 and 32.8 MeV). With this goal, a new density distribution of6 Li nucleus, the no-core full configuration (NCFC) density distribution (DD), is used to obtain the real potentials in dfm calculations. The NCFC DD results are compared with the results of both gaussian shape (GS) DD and an earlier study as well as the experimental data. This comparison provides information about the similarities and differences of the models used in calculations.

关键词：密度分布弹性散射反应折叠模型实验数据 dfm MeV 差异性

基于dfm与CAE的显微镜前护罩零件的热流道模具设计

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塑料科技 2022年第12期50卷 90-93页

作者：周林浩江西凤凰光学科技有限公司江西上饶334100

针对显微镜前护罩零件薄壁,有两处加强筋和boss柱及端面有凸起、侧面有斜口的特征,设计显微镜前护罩零件的热流道模具,通过面向制造设计(dfm)分析,对显微镜前护罩产品塑件的结构、浇注系统、冷却系统、模具整体结构及工作过程等进行分析... 详细信息

针对显微镜前护罩零件薄壁,有两处加强筋和boss柱及端面有凸起、侧面有斜口的特征,设计显微镜前护罩零件的热流道模具,通过面向制造设计(dfm)分析,对显微镜前护罩产品塑件的结构、浇注系统、冷却系统、模具整体结构及工作过程等进行分析,根据dfm与CAE分析结果可以预判塑料件在成型过程中可能出现的问题,避免塑料件出现缩水、应力痕、较薄、较细,易变形易断特征。设计斜抽芯+滑块实现侧面脱模。在boss柱与斜面之间设计定距拉钩机构,利用斜顶块与前装饰板斜面之间滑动,与boss柱分离,解决了外观面缩水问题和塑料件内部因空间小限制脱倒钩的问题。各机构的模具冷却系统的设计,使得模具在使用过程中温度均匀,延长模具使用寿命。模具整体结构布局合理、运动顺畅,成型塑料件符合产品和设计要求,生产制造成本较低,为同类塑料模具设计提供有益参考。

关键词：显微镜前护罩 dfm CAE 定距拉钩热流道模具设计

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基于dfm的车灯盖零件的热流道模具设计

塑料科技 2022年第10期50卷 91-94页

作者：陈兵王静胡银芬惠州城市职业学院广东惠州516025

针对车灯盖零件的成型,设计车灯盖零件的热流道模具,通过面向制造设计(dfm)分析,对汽车车灯盖产品视图、型腔布局、主分型面、浇注系统等进行分析,根据dfm分析结果对产品进行热流道模具设计,提高模具设计的效率及降低模具设计的风险。通... 详细信息

针对车灯盖零件的成型,设计车灯盖零件的热流道模具,通过面向制造设计(dfm)分析,对汽车车灯盖产品视图、型腔布局、主分型面、浇注系统等进行分析,根据dfm分析结果对产品进行热流道模具设计,提高模具设计的效率及降低模具设计的风险。通过dfm分析后,能有效快速地设计出符合要求的热流道模具。对于各种要求较高的汽车塑件的热流道模具都可以通过dfm分析,以便更快速、有效地设计出合理的热流道模具,提高模具设计的效率和后续的试模效率,降低整个生产周期。

关键词：汽车车灯盖 dfm 热流道模具设计