检索范围:
排序: 展示方式:
Strain localization analyses of idealized sands in biaxial tests by distinct element method
Mingjing JIANG, Hehua ZHU, Xiumei LI,
《结构与土木工程前沿(英文)》 2010年 第4卷 第2期 页码 208-222 doi: 10.1007/s11709-010-0025-2
关键词: idealized sand strain localization numerical analyses distinct element method (DEM)
Lei YANG, Yujing JIANG, Bo LI, Shucai LI, Yang GAO
《结构与土木工程前沿(英文)》 2012年 第6卷 第2期 页码 121-131 doi: 10.1007/s11709-012-0151-0
关键词: expanded distinct element method (EDEM) crack growth rock-like material tensile-shear failure criterion Griffith failure criterion mechanical and failure behavior
Discrete element method modeling of corn-shaped particle flow in rectangular hopper
He TAO, Baosheng JIN, Wenqi ZHONG, Xiaofang WANG,
《结构与土木工程前沿(英文)》 2010年 第4卷 第2期 页码 267-275 doi: 10.1007/s11709-010-0035-0
关键词: discrete element method (DEM) non-spherical voidage pressure velocity distribution hopper
Xueqing LIU, Xiaodong ZHAO, Luyi LU, Jianlan LI
《能源前沿(英文)》 2021年 第15卷 第2期 页码 499-512 doi: 10.1007/s11708-021-0742-3
关键词: dust deposition discrete element method (DEM) photovoltaic mirrors solar energy
Numerical simulation of two-dimensional spouted bed with draft plates by discrete element method
ZHAO Yongzhi, JIANG Maoqiang, CHENG Yi, JIN Yong
《化学科学与工程前沿(英文)》 2008年 第2卷 第1期 页码 5-9 doi: 10.1007/s11705-008-0009-0
关键词: annulus BEM-DEM-CFD simulation gas-solid two-dimensional relationship
Gui-Rong Liu
《结构与土木工程前沿(英文)》 2019年 第13卷 第2期 页码 456-477 doi: 10.1007/s11709-019-0519-5
The smoothed finite element method (S-FEM) was originated by G R Liu by combining some meshfree techniques with the well-established standard finite element method (FEM). It has a family of models carefully designed with innovative types of smoothing domains. These models are found having a number of important and theoretically profound properties. This article first provides a concise and easy-to-follow presentation of key formulations used in the S-FEM. A number of important properties and unique features of S-FEM models are discussed in detail, including 1) theoretically proven softening effects; 2) upper-bound solutions; 3) accurate solutions and higher convergence rates; 4) insensitivity to mesh distortion; 5) Jacobian-free; 6) volumetric-locking-free; and most importantly 7) working well with triangular and tetrahedral meshes that can be automatically generated. The S-FEM is thus ideal for automation in computations and adaptive analyses, and hence has profound impact on AI-assisted modeling and simulation. Most importantly, one can now purposely design an S-FEM model to obtain solutions with special properties as wish, meaning that S-FEM offers a framework for design numerical models with desired properties. This novel concept of numerical model on-demand may drastically change the landscape of modeling and simulation. Future directions of research are also provided.
关键词: computational method finite element method smoothed finite element method strain smoothing technique smoothing domain weakened weak form solid mechanics softening effect upper bound solution
张婷,冯平
《中国工程科学》 2011年 第13卷 第12期 页码 68-73
以缺少径流资料的福州市北部山区流域为例,通过数字高程模型(DEM)技术与新安江三水源模型相结合的方法,探讨了资料短缺地区设计洪水的计算方法在汇流计算中,通过DEM推求等流时线,避免了在地图上勾绘等流时线的繁琐工作。随着全国各地数字高程模型的建立,将其运用到水文计算当中有重要的现实意义。
关键词: 资料短缺地区 设计洪水 数字高程模型(DEM) 等流时线
3D mode discrete element method with the elastoplastic model
Wei HU, Feng JIN, Chong ZHANG, Jinting WANG
《结构与土木工程前沿(英文)》 2012年 第6卷 第1期 页码 57-68 doi: 10.1007/s11709-012-0139-9
关键词: mode discrete element method elastoplastic numerical method discontinuum contact
Applying the spectral stochastic finite element method in multiple-random field RC structures
Abbas YAZDANI
《结构与土木工程前沿(英文)》 2022年 第16卷 第4期 页码 434-447 doi: 10.1007/s11709-022-0820-6
关键词: uncertainty spectral stochastic finite element method correlation length reliability assessment reinforced concrete beam/slab
利用地球同步轨道InSAR每日生成DEM的质量分析 Article
杨泽发, 张庆君, 丁晓利, 陈武
《工程(英文)》 2020年 第6卷 第8期 页码 913-918 doi: 10.1016/j.eng.2020.07.003
最新的数字高程模型(DEM)产品在灾害防治、城市管理等诸多领域中扮演着重要角色。利用机载或低地球轨道(LEO)的星载干涉合成孔径雷达(InSAR)生成DEM已被证明是可行且极具价值的方法。然而,受成本和卫星重返周期的限制,该技术难以频繁(如每天)生成或更新大区域范围(如大陆尺度或更大范围)的DEM。由于对地同步合成孔径雷达(GEOSAR)卫星运行于地球静止轨道,因此它们能以相当短的重返时间(每天或更短)观测同一地面区域,这为实现生成每日DEM这一理想但目前难以实现的目标提供了潜在可能。为此,本文系统地分析了利用GEOSAR卫星生成的每日DEM产品质量。结果表明:GEOSAR卫星生成的每日DEM产品精度通常远低于利用传统低轨星载合成孔径雷达(SAR)获得的DEM产品。因此,研究GEOSAR DEM生成过程中的误差削弱方法显得至关重要。
LIANG Xinhua, ZHU Ping, LIN Zhongqin, ZHANG Yan
《机械工程前沿(英文)》 2007年 第2卷 第1期 页码 99-103 doi: 10.1007/s11465-007-0017-7
关键词: harshness automotive prototype structural optimization vibration efficient
Special Column on Multiscale Stochastic Finite Element Method
《结构与土木工程前沿(英文)》 2015年 第9卷 第2期 页码 105-106 doi: 10.1007/s11709-015-0297-7
Slope stability analysis based on a multigrid method using a nonlinear 3D finite element model
Yaoru LIU, Zhu HE, Bo LI, Qiang YANG
《结构与土木工程前沿(英文)》 2013年 第7卷 第1期 页码 24-31 doi: 10.1007/s11709-013-0190-1
关键词: slope stability multi-grid method nonlinear finite element method
Amin MANOUCHEHRIAN, Mohammad Fatehi MARJI, Mohsen MOHEBBI
《结构与土木工程前沿(英文)》 2012年 第6卷 第4期 页码 385-392 doi: 10.1007/s11709-012-0173-7
关键词: indirect boundary element method finite element method displacement tunnel case study
Danhui DAN, Qianqing WANG, Jiongxin GONG
《结构与土木工程前沿(英文)》 2021年 第15卷 第1期 页码 244-252 doi: 10.1007/s11709-021-0696-x
关键词: granular material vibration control discrete element method particle damper cable vibration
标题 作者 时间 类型 操作
Strain localization analyses of idealized sands in biaxial tests by distinct element method
Mingjing JIANG, Hehua ZHU, Xiumei LI,
期刊论文
Application of the expanded distinct element method for the study of crack growth in rock-like materials
Lei YANG, Yujing JIANG, Bo LI, Shucai LI, Yang GAO
期刊论文
Discrete element method modeling of corn-shaped particle flow in rectangular hopper
He TAO, Baosheng JIN, Wenqi ZHONG, Xiaofang WANG,
期刊论文
Influence mechanism of dynamic and static liquid bridge forces on particle deposition behaviors in solar photovoltaic mirrors
Xueqing LIU, Xiaodong ZHAO, Luyi LU, Jianlan LI
期刊论文
Numerical simulation of two-dimensional spouted bed with draft plates by discrete element method
ZHAO Yongzhi, JIANG Maoqiang, CHENG Yi, JIN Yong
期刊论文
The smoothed finite element method (S-FEM): A framework for the design of numerical models for desired
Gui-Rong Liu
期刊论文
3D mode discrete element method with the elastoplastic model
Wei HU, Feng JIN, Chong ZHANG, Jinting WANG
期刊论文
Applying the spectral stochastic finite element method in multiple-random field RC structures
Abbas YAZDANI
期刊论文
Acoustic analysis of lightweight auto-body based on finite element method and boundary element method
LIANG Xinhua, ZHU Ping, LIN Zhongqin, ZHANG Yan
期刊论文
Slope stability analysis based on a multigrid method using a nonlinear 3D finite element model
Yaoru LIU, Zhu HE, Bo LI, Qiang YANG
期刊论文
Comparison of indirect boundary element and finite element methods A case study: Shiraz-Esfahan railway
Amin MANOUCHEHRIAN, Mohammad Fatehi MARJI, Mohsen MOHEBBI
期刊论文