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Rotation errors in numerical manifold method and a correction based on large deformation theory
Ning ZHANG, Xu LI, Qinghui JIANG, Xingchao LIN
《结构与土木工程前沿(英文)》 2019年 第13卷 第5期 页码 1036-1053 doi: 10.1007/s11709-019-0535-5
关键词: numerical manifold method rotation large deformation Green strain open-close iteration
Meshless numerical method based on tensor product
SUN Haitao, WANG Yuanhan, MIAO Yu
《结构与土木工程前沿(英文)》 2008年 第2卷 第2期 页码 166-171 doi: 10.1007/s11709-008-0021-y
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
DU Jianguo, LIN Gao
《结构与土木工程前沿(英文)》 2008年 第2卷 第4期 页码 336-342 doi: 10.1007/s11709-008-0054-2
关键词: structure-foundation interface computational efficiency different suitable numerical approach
Analytical and numerical investigation into the longitudinal vibration of uniform nanotubes
null
《机械工程前沿(英文)》 2014年 第9卷 第2期 页码 142-149 doi: 10.1007/s11465-014-0292-z
In recent years, prediction of the behaviors of micro and nanostructures is going to be a matter of increasing concern considering their developments and uses in various engineering fields. Since carbon nanotubes show the specific properties such as strength and special electrical behaviors, they have become the main subject in nanotechnology researches. On the grounds that the classical continuum theory cannot accurately predict the mechanical behavior of nanostructures, nonlocal elasticity theory is used to model the nanoscaled systems. In this paper, a nonlocal model for nanorods is developed, and it is used to model the carbon nanotubes with the aim of the investigating into their longitudinal vibration. Following the derivation of governing equation of nanorods and estimation of nondimensional frequencies, the effect of nonlocal parameter and the length of the nanotube on the obtained frequencies are studied. Furthermore, differential quadrature method, as a numerical solution technique, is used to study the effect of these parameters on estimated frequencies for both classical and nonlocal theories.
关键词: continuum theory differential quadrature method nanorod longitudinal vibration
New method for computer numerical control machine tool calibration: Relay method
LIU Huanlao, SHI Hanming, LI Bin, ZHOU Huichen
《机械工程前沿(英文)》 2007年 第2卷 第3期 页码 301-304 doi: 10.1007/s11465-007-0053-3
关键词: positional volumetric information process repeatability
An investigation on prevalent strategies for XFEM-based numerical modeling of crack growth in porous
《结构与土木工程前沿(英文)》 2021年 第15卷 第4期 页码 914-936 doi: 10.1007/s11709-021-0750-8
关键词: numerical modeling extended finite element method porous media crack growth stress intensity factor
Liansuo AN , Zhi WANG , Zhonghe HAN ,
《能源前沿(英文)》 2009年 第3卷 第3期 页码 254-261 doi: 10.1007/s11708-009-0047-4
关键词: wet steam two-phase flow spontaneous condensation numerical simulation flow separation profile loss
Simulation of viscoelastic behavior of defected rock by using numerical manifold method
Feng REN, Lifeng FAN, Guowei MA
《结构与土木工程前沿(英文)》 2011年 第5卷 第2期 页码 199-207 doi: 10.1007/s11709-011-0102-1
关键词: stress wave propagation defected rock numerical manifold method viscoelastic behavior storage modulus loss modulus
WU Yi-jie, LENG Hong-bin
《机械工程前沿(英文)》 2006年 第1卷 第1期 页码 71-75 doi: 10.1007/s11465-005-0005-8
By analyzing the structure characteristics of arbitrary n-polygon noncircular sections, mathematical formulas among the characteristic parameters were set up, and a theorem for designing this kind of sections was deduced by mathematical induction method. Based on the mechanistic transmission principle, the control theorems for the numerical control (NC) grinding of arbitrary n-polygon noncircular sections and the control model for the multicoordinate motion were built. A feed rate selfadjusting method was proposed to uniform the grinding speed with the changes of sectional curvature. Then, an NC machine tool for grinding n-polygon noncircular sections was developed. The test results of the grinded parts showed that the section profiles accorded with the design demands: the roughness was less than 0.32 ?m and the dimensional accuracy was within 8 ?m. The results prove that the proposed theorems and method can effectively direct the design and manufacture of the polygonal noncircular connection.
关键词: manufacture multicoordinate characteristic polygonal noncircular mechanistic transmission
Sina AMIRI; Ali Naghi DEHGHAN
《结构与土木工程前沿(英文)》 2022年 第16卷 第6期 页码 704-717 doi: 10.1007/s11709-021-0746-4
关键词: shallow tunneling method pile and rib method ground surface settlement subway station construction numerical modeling
Yiguo XUE, Huimin GONG, Fanmeng KONG, Weimin YANG, Daohong QIU, Binghua ZHOU
《结构与土木工程前沿(英文)》 2021年 第15卷 第1期 页码 136-146 doi: 10.1007/s11709-020-0710-8
关键词: double-arch tunnel triple-layer composite liner system numerical modeling stress analysis settlement
《结构与土木工程前沿(英文)》 2023年 第17卷 第1期 页码 10-24 doi: 10.1007/s11709-022-0904-3
关键词: underground structures seismic response stiffness matrix method domain reduction method P-SV waves
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
《结构与土木工程前沿(英文)》 2023年 第17卷 第5期 页码 796-811 doi: 10.1007/s11709-023-0922-9
关键词: terraced slope safety factor finite element method ABAQUS extended Cam–clay
标题 作者 时间 类型 操作
Rotation errors in numerical manifold method and a correction based on large deformation theory
Ning ZHANG, Xu LI, Qinghui JIANG, Xingchao LIN
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
Improved numerical method for time domain dynamic structure-foundation interaction analysis based onscaled boundary finite element method
DU Jianguo, LIN Gao
期刊论文
Analytical and numerical investigation into the longitudinal vibration of uniform nanotubes
null
期刊论文
New method for computer numerical control machine tool calibration: Relay method
LIU Huanlao, SHI Hanming, LI Bin, ZHOU Huichen
期刊论文
An investigation on prevalent strategies for XFEM-based numerical modeling of crack growth in porous
期刊论文
Numerical study and control method of interaction of nucleation and boundary layer separation in condensing
Liansuo AN , Zhi WANG , Zhonghe HAN ,
期刊论文
Simulation of viscoelastic behavior of defected rock by using numerical manifold method
Feng REN, Lifeng FAN, Guowei MA
期刊论文
Design Method and Numerical Control Machining Principle for an Arbitrary n-polygon Noncircular Section
WU Yi-jie, LENG Hong-bin
期刊论文
Comparison of shallow tunneling method with pile and rib method for construction of subway station in
Sina AMIRI; Ali Naghi DEHGHAN
期刊论文
Stability analysis and optimization of excavation method of double-arch tunnel with an extra-large spanbased on numerical investigation
Yiguo XUE, Huimin GONG, Fanmeng KONG, Weimin YANG, Daohong QIU, Binghua ZHOU
期刊论文
A numerical framework for underground structures in layered ground under inclined P-SV waves using stiffness
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