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Macro-architectured cellular materials: Properties, characteristic modes, and prediction methods
Zheng-Dong MA
《机械工程前沿(英文)》 2018年 第13卷 第3期 页码 442-459 doi: 10.1007/s11465-018-0488-8
Macro-architectured cellular (MAC) material is defined as a class of engineered materials having configurable cells of relatively large (i.e., visible) size that can be architecturally designed to achieve various desired material properties. Two types of novel MAC materials, negative Poisson’s ratio material and biomimetic tendon reinforced material, were introduced in this study. To estimate the effective material properties for structural analyses and to optimally design such materials, a set of suitable homogenization methods was developed that provided an effective means for the multiscale modeling of MAC materials. First, a strain-based homogenization method was developed using an approach that separated the strain field into a homogenized strain field and a strain variation field in the local cellular domain superposed on the homogenized strain field. The principle of virtual displacements for the relationship between the strain variation field and the homogenized strain field was then used to condense the strain variation field onto the homogenized strain field. The new method was then extended to a stress-based homogenization process based on the principle of virtual forces and further applied to address the discrete systems represented by the beam or frame structures of the aforementioned MAC materials. The characteristic modes and the stress recovery process used to predict the stress distribution inside the cellular domain and thus determine the material strengths and failures at the local level are also discussed.
关键词: architectured material cellular materials multi-scale modeling homogenization method effective material properties computational method
Effects of sheet thickness and material on the mechanical properties of flat clinched joint
Chao CHEN, Huiyang ZHANG, Shengdun ZHAO, Xiaoqiang REN
《机械工程前沿(英文)》 2021年 第16卷 第2期 页码 410-419 doi: 10.1007/s11465-020-0618-y
关键词: clinched joint flat clinching process thickness configuration material configuration mechanical property
《化学科学与工程前沿(英文)》 2023年 第17卷 第10期 页码 1555-1567 doi: 10.1007/s11705-023-2338-4
关键词: adipic acid loose nanofiltration membrane dye/salt selective separation steric hindrance charge effect
Influence of soft rock-fill material as dam embankment with central bituminous concrete membrane
Peter TSCHERNUTTER
《结构与土木工程前沿(英文)》 2011年 第5卷 第1期 页码 63-70 doi: 10.1007/s11709-010-0016-3
关键词: embankment dam bituminous concrete membrane rock-fill material properties deformation behavior
Thermal radiative properties of metamaterials and other nanostructured materials: A review
Ceji FU, Zhuomin M. ZHANG
《能源前沿(英文)》 2009年 第3卷 第1期 页码 11-26 doi: 10.1007/s11708-009-0009-x
关键词: metamaterial nanostructured material thermal radiative property radiative energy transfer
Mechanical properties of rock materials with related to mineralogical characteristics and grain size
Wenjuan SUN, Linbing WANG, Yaqiong WANG
《结构与土木工程前沿(英文)》 2017年 第11卷 第3期 页码 322-328 doi: 10.1007/s11709-017-0387-9
关键词: Mechanical properties rock material texture mineral characteristics
An investigation into the properties of ternary and binary cement pastes containing glass powder
Marcelo Frota BAZHUNI, Mahsa KAMALI, Ali GHAHREMANINEZHAD
《结构与土木工程前沿(英文)》 2019年 第13卷 第3期 页码 741-750 doi: 10.1007/s11709-018-0511-5
关键词: cement paste glass powder pozzolanic reaction supplementary cementitious material
Preparation and properties of a silver particle-coated and 1-dodecanethiol-modified superhydrophobic
《化学科学与工程前沿(英文)》 2022年 第16卷 第8期 页码 1237-1246 doi: 10.1007/s11705-022-2140-8
关键词: melamine sponge oil-absorbing material hydrophobic oil-water separation oil absorption capacity
Dynamic material performance of cold-formed steel hollow sections: a state-of-the-art review
Cameron B. RITCHIE, Jeffrey A. PACKER, Xiao-Ling ZHAO, Amin HEIDARPOUR, Yiyi CHEN
《结构与土木工程前沿(英文)》 2017年 第11卷 第2期 页码 209-227 doi: 10.1007/s11709-017-0388-8
关键词: cold-formed steel hollow structural sections composites impulsive loading impact blast experimentation analysis material properties
null
《医学前沿(英文)》 2012年 第6卷 第3期 页码 288-295 doi: 10.1007/s11684-012-0208-4
Tramadol is a potent analgesic. However, the analgesia efficacy of tramadol, particularly its minimum effective dose (MED), is not clear. The aim of this study is to find MED of tramadol for postoperative analgesia in infants. The continual reassessment method (CRM) was performed to find MED. Infants undergoing surgeries were included in the 3 phases of this series. In each phase, 24 participants were allocated a different tramadol dose. Pain intensity was measured by face, legs, activity, cry, consolability (FLACC) measurement at 3-hour intervals. Tramadol was considered ineffective if the FLACC score was higher than 4 in 10 at anytime. In phase 1, seven dose levels were used within the range 0.1–0.4 mg?kg-1·h-1. Phase 1 was insufficient to identify the MED, and we increased the dose to 0.4–0.8 mg?kg-1·h-1 in phase 2. Phase 2 was insufficient to identify the MED. In phase 3, local anesthetic wound infiltration was introduced, and the tramadol dose levels tested were the same as in phase 1. The successful analgesia probability of tramadol 0.4 mg?kg-1?h-1 was 82.1% (95% CI, 0.742–0.925) in phase 1. In phase 2, it was 84.7% (95% CI, 0.789–0.991) with the dose 0.8 mg?kg-1?h-1. Phase 1 and phase 2 were insufficient to identify the MED. In phase 3, the successful analgesia probability for dose 0.35 mg?kg-1?h-1was 96.7% (95% CI, 0.853–0.997).We have demonstrated that tramadol provides insufficient analgesia for surgeries considered to cause moderate-to-severe postoperative pain in infants if used as the sole analgesic, and that local anesthetic wound infiltration enhances the efficacy of tramadol.
关键词: tramadol minimum effective dose postoperative analgesia infants continual reassessment method
Developing effective tumor vaccines: basis, challenges and perspectives
XU Qingwen, CHEN Weifeng
《医学前沿(英文)》 2007年 第1卷 第1期 页码 11-19 doi: 10.1007/s11684-007-0003-9
关键词: development conventional identification elucidation Successful immunotherapy
Critical review of recent development in fiber reinforced adobe bricks for sustainable construction
Mahgoub M. SALIH, Adelaja I. OSOFERO, Mohammed S. IMBABI
《结构与土木工程前沿(英文)》 2020年 第14卷 第4期 页码 839-854 doi: 10.1007/s11709-020-0630-7
关键词: adobe bricks fibre reinforced bricks green sustainable building material physical and mechanical properties
Victor M. Deantes-Espinosa, Tian-Yuan Zhang, Xiao-Xiong Wang, Yinhu Wu, Guo-Hua Dao, Hong-Ying Hu
《环境科学与工程前沿(英文)》 2019年 第13卷 第4期 doi: 10.1007/s11783-019-1141-4
Attachment of Scenedesmus sp. LX1 was tested on certain materials. A criterion for selection of materials was used to choose seven materials. The amount of S. sp. LX1 attached on polyurethane foam was 51.74 mg/L. Materials’ surface influenced the attachment of microalgae. Hydrophilic and hydrophobic properties also affected the attachment of S. sp. LX1.
关键词: Attached cultivation Microalgae Material properties Polyurethane Scenedesmus
Z-scheme CdS/WO on a carbon cloth enabling effective hydrogen evolution
《能源前沿(英文)》 2021年 第15卷 第3期 页码 678-686 doi: 10.1007/s11708-021-0768-6
关键词: photocatalysis CdS/WO3 carbon cloth Z-scheme hydrogen evolution
标题 作者 时间 类型 操作
Macro-architectured cellular materials: Properties, characteristic modes, and prediction methods
Zheng-Dong MA
期刊论文
Effects of sheet thickness and material on the mechanical properties of flat clinched joint
Chao CHEN, Huiyang ZHANG, Shengdun ZHAO, Xiaoqiang REN
期刊论文
Tailoring the microstructure and properties of PES/SPSf loose nanofiltration membranes using SPES asa hydrophilic polymer for the effective removal of dyes via steric hindrance and charge effect
期刊论文
Influence of soft rock-fill material as dam embankment with central bituminous concrete membrane
Peter TSCHERNUTTER
期刊论文
Thermal radiative properties of metamaterials and other nanostructured materials: A review
Ceji FU, Zhuomin M. ZHANG
期刊论文
Mechanical properties of rock materials with related to mineralogical characteristics and grain size
Wenjuan SUN, Linbing WANG, Yaqiong WANG
期刊论文
An investigation into the properties of ternary and binary cement pastes containing glass powder
Marcelo Frota BAZHUNI, Mahsa KAMALI, Ali GHAHREMANINEZHAD
期刊论文
Preparation and properties of a silver particle-coated and 1-dodecanethiol-modified superhydrophobic
期刊论文
Dynamic material performance of cold-formed steel hollow sections: a state-of-the-art review
Cameron B. RITCHIE, Jeffrey A. PACKER, Xiao-Ling ZHAO, Amin HEIDARPOUR, Yiyi CHEN
期刊论文
Estimation of the minimum effective dose of tramadol for postoperative analgesia in infants using the
null
期刊论文
Developing effective tumor vaccines: basis, challenges and perspectives
XU Qingwen, CHEN Weifeng
期刊论文
Critical review of recent development in fiber reinforced adobe bricks for sustainable construction
Mahgoub M. SALIH, Adelaja I. OSOFERO, Mohammed S. IMBABI
期刊论文
Attached cultivation of
Victor M. Deantes-Espinosa, Tian-Yuan Zhang, Xiao-Xiong Wang, Yinhu Wu, Guo-Hua Dao, Hong-Ying Hu
期刊论文