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A discrete contact model for complex arbitrary-shaped convex geometries

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Particuology 2023年第9期80卷 180-191页

作者： Jan E.Marquardt Ulrich J.Römer Hermann Nirschl Mathias J.Krause lattice Boltzmann Research Group Karlsruhe Institute of TechnologyStraße am Forum 8Karlsruhe76131Germany Institute for Mechanical Process Engineering and Mechanics Karlsruhe Institute of TechnologyStraße am Forum 8Karlsruhe76131Germany Institute of Engineering Mechanics Karlsruhe Institute of TechnologyKaiserstraße 10Karlsruhe76131Germany Institute for Applied and Numerical Mathematics Karlsruhe Institute of TechnologyEnglerstraße 2Karlsruhe76131Germany

The shape of particles has a significant influence on the behavior of suspensions,as the particle-fluid,particle-particle,and particle-wall interactions depend on ***,the simultaneous consideration of complex particle shapes and four-way coupling remains a major *** is mainly due to a lack of suitable contact *** models for complex shapes have been proposed in literature,and most limit the accuracy of the particle-fluid *** this reason,this paper presents a novel contact model for complex convex particle shapes for use with partially saturated methods,in which we propose to obtain necessary contact properties,such as the indentation depth,by a discretization of the contact *** goal of the proposed model is to enable comprehensive and accurate studies of particulate flows,especially with high volume fractions,that lead to new insights and contribute to the improvement of existing industrial *** ensure correctness and sustainability,we validate the model extensively by studying cases with and without *** the latter case,we use the homogenized lattice Boltzmann *** provided investigations show a great agreement of the proposed discrete contact model with analytical solutions and the literature.

关键词： Partially saturated cells method Homogenized lattice Boltzmann method Arbitrarily shaped particle Discrete contact model Particle-resolved simulation OpenLB

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使用FPGA实现低成本汽车多总线桥接

电子设计应用 2005年第7期 22-22,24,26页

作者： Trien Doan 莱迪思半导体(lattice)公司

引言汽车中的电子系统持续快速增长,因此对比一下汽车电子发展和消费类电子便携式产品的发展将会大有启发.如今的消费者希望在汽车中获得手持便携式电子设备所提供的方便与舒适性.汽车电子将不再局限于引擎管理系统或车身控制,而是扩展... 详细信息

引言汽车中的电子系统持续快速增长,因此对比一下汽车电子发展和消费类电子便携式产品的发展将会大有启发.如今的消费者希望在汽车中获得手持便携式电子设备所提供的方便与舒适性.汽车电子将不再局限于引擎管理系统或车身控制,而是扩展至新的领域,诸如信息娱乐、通信以及司机/乘客辅助系统等.

关键词： FPGA实现多总线便携式电子设备桥接成本汽车电子便携式产品消费类电子电子系统车身控制管理系统辅助系统舒适性消费者

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FPGA中的处理器IP概述

电子产品世界 2010年第3期17卷 21-22页

作者： Mike Kendrick 莱迪思(lattice)半导体公司

在工程设计中,如何选择微处理器核越来越重要,本文对FPGA设计中所用的处理器IP核进行了探讨。latticeMico32软核具有技术上的优势,不仅拥有IP核,还有构建平台的工具。

关键词：软核硬核处理器IP

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低功耗超快速CPLD

电子产品世界 2002年第6A期9卷 30-31页

作者：陈恒上海莱迪思(lattice)半导体公司

最低的动态功耗与超快速的性能传统上,对于有限供电电源的场合,电路设计者在用CPLD(复杂可编程逻辑器件)设计和实现数字电子系统时,最基本的也是最关心的是如何达到低功耗.高性能的计算和通信系统常常有相对较高的功耗,而设计者考虑的... 详细信息

最低的动态功耗与超快速的性能传统上,对于有限供电电源的场合,电路设计者在用CPLD(复杂可编程逻辑器件)设计和实现数字电子系统时,最基本的也是最关心的是如何达到低功耗.高性能的计算和通信系统常常有相对较高的功耗,而设计者考虑的是如何以低功耗去降低运作成本,同时又能增强系统的可靠性.

关键词：低功耗 CPLD 可编程逻辑器件低压标准

带隐私保护的集合交集计算协议的发展现状综述

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信息安全与通信保密 2019年第3期17卷 48-67页

作者：崔泓睿刘天怡郁昱上海交通大学lattice实验室上海200240

隐私保护集合交集(Private Set Intersection, PSI)计算属于安全多方计算领域的特定应用问题,不仅具有重要的理论意义,也具有很强的应用价值。随着用户数据的隐私保护越来越受到重视,这一方向的研究更是符合人们日益强烈的在享受各类依... 详细信息

隐私保护集合交集(Private Set Intersection, PSI)计算属于安全多方计算领域的特定应用问题,不仅具有重要的理论意义,也具有很强的应用价值。随着用户数据的隐私保护越来越受到重视,这一方向的研究更是符合人们日益强烈的在享受各类依赖个人信息的业务的便利性的同时最大程度保护个人信息私密性的需要。本文对隐私保护集合交集的问题定义进行了简要的阐述,重点介绍了当前性能(通信和计算负载)最好的PSI协议的主要思想与适宜的应用场景,并且在最后对这些协议进行了性能上的比较。

关键词：隐私保护交集性能比较安全多方计算不经意传输全同态加密

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在系统可编程模拟电路的原理与应用

电气电子教学学报 2001年第2期23卷 40-42,49页

作者：陈恒上海lattice半导体有限公司上海200223

从分析在系统可编程模拟电路中的基本单元ＰＡＣ块出发，阐述了在系统可编程模拟电路的原理。

关键词：集成电路系统可编程模拟电路电路设计运算跨导放大器

The Continuum Analytical Method of Steel Frame- Reinforced Concrete Shear Wall Mixed Structure

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Journal of Civil Engineering and Architecture 2011年第4期5卷 368-374页

作者： Jian Liu Xiangyun Huang Guangen Zhou Jiping Hao Zenglin Xing School of Civil Engineering Guangzhou University Guangzhou China Postdoctoral Research Station Zhejiang Southeast Lattice Frame Group. Zhejiang China College of Civil Engineering Xi ＇an University of Architecture and Technology Xi ＇an China

The inter-story drift stiffness considered the semirigidity of beam and column joints connection, and P-Delta second order effect of steel frame parts in the mixed structure is presented in the paper. After considering on the influence of semirigidity between steel beams and steel columns, second order effect of beam-column members for steel frame and structural second order effect, the traditional continuum analytial method used in RC shear-frames wall structure is developed to steel frames-reinforced concrete shear wall mixed structure subject to horizontal load in this paper. A continuum approach, which is suitable for analyzing steel frames-reinforced concrete shear wall mixed structure subject to horizontal load, is presented. The method is relatively simple and more practical. It will be referred to structural design for steel frames-reinforced concrete shear wall mixed structure.

关键词： Steel frames-reinforced concrete wall mixed structure continuum analytial approach inter-story drift stiffness semirigid connection second order effect.

MONTE CARLO STUDY OF THE EGUCHI-KAWAI MODEL FOR A NEW ACTION

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Chinese Science Bulletin 1987年第1期32卷 15-18页

作者：董绍静李文铸 Department of Physics Zhejiang University Hangzhou Department of Physics Zhejiang University Hangzhouecently there has been great progress in investigating the large-N limit of the SU(N) lattice gauge theories. Eguchi-Kawai claimed that in this limit we could replace the usual standard lattice model by a reduced model which has only one site (one space-time point) with a periodic boundary condition for pure gauge field. The major assumption in their deriva

Recently, there has been great progress in investigating the large-N limit of the SU(N) lattice gauge theories. Eguchi-Kawai claimed that in this limit we could replace the usual standard lattice model by a reduced model which has only one site (one space-time point) with a periodic boundary condition for pure gauge field. The major assumption in their

关键词： gauge ACTION claimed replace assumption usual breaking invariant broken iteration

Research on BP-ANN Model of Semi-rigid Connection

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Journal of Civil Engineering and Architecture 2012年第3期6卷 385-389页

作者： Jian Liu Xiangyun Huang Guangen Zhou Jiping Hao Da Ren Yue Gao School of Civil Engineering Guangzhou University Guangzhou China Postdoctoral Research Station Zhejiang Southeast Lattice Frame Group Zhejiang China College of Civil Engineering Xi 'an University of Architecture and Technology Xi 'an China

The beam-to-column semirigid connection in a steel frame structure is represented by a zero-length rotational spring at the end of the beam element. The beam-to-column semirigid connection behavior is represented by its moment-rotation relationship. Several traditional mathematical models have been proposed to fit the moment-rotation curves from the experimental database,but they may be more reliable within certain ranges. In this paper, the intellectualized analytical model is proposed in the semirigid connections for top and seat angles with double web angles using the feed-forward back-propagation artificial neural network （BP-ANN） technique. the intellectualized analytical model from experimental results based on BP-ANN is more reliable and it is a better choice to the moment-rotation curves for beam-to-column semirigid connection. The results are found to provide effectiveness to the experimental response that is satisfactory for use in steel structural engineering design.

关键词： beam-to-column joint semirigid connection intellectualized analytical model artificial neural network.