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Peridynamics versus XFEM: a comparative study for quasi-static crack problems
Jinhai ZHAO, Hesheng TANG, Songtao XUE
《结构与土木工程前沿(英文)》 2018年 第12卷 第4期 页码 548-557 doi: 10.1007/s11709-017-0434-6
关键词: XFEM peridynamic bilateral crack parallel double cracks nonlocal theory
《结构与土木工程前沿(英文)》 2021年 第15卷 第6期 页码 1372-1389 doi: 10.1007/s11709-021-0772-2
关键词: soft−hard composite layered rock mass double cracks crack evolution acoustic emission digital image correlation
Detection for transverse corner cracks of steel plates’ surface using wavelet
Qiong ZHOU, Qi AN
《机械工程前沿(英文)》 2009年 第4卷 第2期 页码 224-227 doi: 10.1007/s11465-009-0017-x
关键词: transverse corner cracks defect detection multi-scales wavelet analysis
Microbial self-healing of cracks in cement-based materials and its influencing factors
《结构与土木工程前沿(英文)》 doi: 10.1007/s11709-023-0986-6
关键词: cement-based materials cracks microbial self-healing agent mechanism intelligent building materials
Fatigue crack growth simulations of 3-D linear elastic cracks under thermal load by XFEM
Himanshu PATHAK,Akhilendra SINGH,I.V. SINGH,S. K. YADAV
《结构与土木工程前沿(英文)》 2015年 第9卷 第4期 页码 359-382 doi: 10.1007/s11709-015-0304-z
Jaroon RUNGAMORNRAT, Bounsana CHANSAVANG, Weeraporn PHONGTINNABOOT, Chung Nguyen VAN
《结构与土木工程前沿(英文)》 2020年 第14卷 第2期 页码 280-298 doi: 10.1007/s11709-019-0586-7
关键词: crack-face conditions intensity factors non-flat cracks permittivity piezoelectric media SGBEM
Fast detection algorithm for cracks on tunnel linings based on deep semantic segmentation
《结构与土木工程前沿(英文)》 2023年 第17卷 第5期 页码 732-744 doi: 10.1007/s11709-023-0965-y
关键词: tunnel engineering crack segmentation fast detection DeepLabv3+ feature fusion attention mechanism
Ductile extension of 3-D external circumferential cracks in pipe structures
Wuchao YANG, Xudong QIAN
《结构与土木工程前沿(英文)》 2011年 第5卷 第3期 页码 294-303 doi: 10.1007/s11709-011-0115-9
关键词:
ductile fracture
computational cell method
G-T model
黄玉划,胡爱群,宋宇波
《中国工程科学》 2004年 第6卷 第7期 页码 70-74
由于CBC-MAC模式不可并行处理,提出了一种基于双重分组的并行认证模式(PKCB)。PKCB模式同并行认证模式PMAC相比,安全性和速率都有显著提高,PKCB认证模式与CTR(计数器)加密模式结合可构成分组密码算法的一种全工作模式。在此基础上提出了一种基于密钥计数的并行认证模式(KCTR-MAC)。KCTR-MAC模式安全性比PMAC模式高得多,而速率未降低,KCTR-MAC认证模式和CTR加密模式结合也可构成分组密码算法的一种全工作模式(2CTR),2CTR模式的综合性能不亚于标准模式CCM(CTR with CBC-MAC),是一种安全快速的实用模式。
Effect of calcium lactate on compressive strength and self-healing of cracks in microbial concrete
Kunamineni VIJAY, Meena MURMU
《结构与土木工程前沿(英文)》 2019年 第13卷 第3期 页码 515-525 doi: 10.1007/s11709-018-0494-2
关键词: calcium lactate bacillus subtilis compressive strength self-healing of cracks
Junhong GUO, Zixing LU
《机械工程前沿(英文)》 2011年 第6卷 第3期 页码 296-300 doi: 10.1007/s11465-011-0236-9
Based on the Stroh-type formalism and the technique of conformal mapping, the problem of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric solid is investigated under remotely uniform in-plane electric loading and anti-plane mechanical loading, which allowed us to take the electric field inside the hole and cracks into account. The analytical solutions of the field intensity factors and the energy release rate are presented in closed-form, which includes the extreme cases for an impermeable crack and a permeable crack. Numerical results are then presented to reveal the effects of geometrical parameters, crack permeability and combined mechanical and electric loadings on the energy release rate.
关键词: piezoelectric materials elliptical hole semi-permeable crack energy release rate analytic solution
Wenxuan CAO; Junjie LI
《结构与土木工程前沿(英文)》 2022年 第16卷 第11期 页码 1378-1396 doi: 10.1007/s11709-022-0855-8
关键词: underwater cracks remote operated vehicle image stitching image segmentation graph convolutional neural network
Structural optimization of typical rigid links in a parallel kinematic machine
Xinjun LIU, Zhidong LI, Xiang CHEN
《机械工程前沿(英文)》 2011年 第6卷 第3期 页码 344-353 doi: 10.1007/s11465-011-0227-x
The motion dynamics and accuracy of parallel kinematic machines largely depend on the weights and rigidity of typical rigid links. Therefore, these parts should be designed in such a way that they are light but rigid. This work employs the techniques of topology and size optimization to design two typical rigid links of a parallel kinematic machine (PKM) and subsequently obtains applicable structures for them. The calculation models are established, and a new algorithm called the Guide-Weight method is introduced to solve topology optimization problems. The commercial software Ansys is used to perform size optimization.
关键词: topology optimization size optimization parallel kinematic machine (PKM)
Experimental measurement of double-K fracture parameters of concrete with small-size aggregates
ZHANG Xiufang, XU Shilang, ZHENG Shuang
《结构与土木工程前沿(英文)》 2007年 第1卷 第4期 页码 448-457 doi: 10.1007/s11709-007-0061-8
Optimal design of a linkage–cam mechanism-based redundantly actuated parallel manipulator
《机械工程前沿(英文)》 2021年 第16卷 第3期 页码 451-467 doi: 10.1007/s11465-021-0634-6
关键词: redundant actuation parallel manipulator linkage–cam mechanism Jacobian optimal design
标题 作者 时间 类型 操作
Peridynamics versus XFEM: a comparative study for quasi-static crack problems
Jinhai ZHAO, Hesheng TANG, Songtao XUE
期刊论文
Crack evolution of soft–hard composite layered rock-like specimens with two fissures under uniaxial compression
期刊论文
Detection for transverse corner cracks of steel plates’ surface using wavelet
Qiong ZHOU, Qi AN
期刊论文
Fatigue crack growth simulations of 3-D linear elastic cracks under thermal load by XFEM
Himanshu PATHAK,Akhilendra SINGH,I.V. SINGH,S. K. YADAV
期刊论文
Investigation of Generalized SIFs of cracks in 3D piezoelectric media under various crack-face conditions
Jaroon RUNGAMORNRAT, Bounsana CHANSAVANG, Weeraporn PHONGTINNABOOT, Chung Nguyen VAN
期刊论文
Ductile extension of 3-D external circumferential cracks in pipe structures
Wuchao YANG, Xudong QIAN
期刊论文
Effect of calcium lactate on compressive strength and self-healing of cracks in microbial concrete
Kunamineni VIJAY, Meena MURMU
期刊论文
Fracture behavior of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric
Junhong GUO, Zixing LU
期刊论文
Detecting large-scale underwater cracks based on remote operated vehicle and graph convolutional neural
Wenxuan CAO; Junjie LI
期刊论文
Structural optimization of typical rigid links in a parallel kinematic machine
Xinjun LIU, Zhidong LI, Xiang CHEN
期刊论文
Experimental measurement of double-K fracture parameters of concrete with small-size aggregates
ZHANG Xiufang, XU Shilang, ZHENG Shuang
期刊论文