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Experimental study on compaction-induced anisotropic mechanical property of rockfill material

Xiangtao ZHANG, Yizhao GAO, Yuan WANG, Yu-zhen YU, Xun SUN

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 109-123 doi: 10.1007/s11709-021-0693-0

Abstract: The anisotropy of rockfill materials has a significant influence on the performance of engineering structures. However, relevant research data are very limited, because of the difficulty with preparing specimens with different inclination angles using traditional methods. Furthermore, the anisotropy test of rockfill materials is complex and complicated, especially for triaxial tests, in which the major principal stress plane intersects with the compaction plane at different angles. In this study, the geometric characteristics of a typical particle fraction consisting of a specific rockfill material were statistically investigated, and the distribution characteristics of particle orientation in specimens prepared via different compaction methods were examined. For high-density rockfill materials, a set of specimen preparation devices for inclined compaction planes was developed, and a series of conventional triaxial compression tests with different principal stress direction angles were conducted. The results reveal that the principal stress direction angle has a significant effect on the modulus, shear strength, and dilatancy of the compacted rockfill materials. Analysis of the relationship between the principal stress direction angles, change in the stress state, and change in the corresponding dominant shear plane shows that the angle between the compacted surface and dominant shear plane is closely related to interlocking resistance associated with the particle orientation. In addition, different principal stress direction angles can change the extent of the particle interlocking effect, causing the specimen to exhibit different degrees of anisotropy.

Keywords： rockfill     inclination of specimen preparation     anisotropy     mechanical property     mechanism    

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A novel strategy for the construction of silk fibroin–SiO composite aerogel with enhanced mechanicalproperty and thermal insulation performance

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 288-297 doi: 10.1007/s11705-022-2222-7

Abstract: practical application of silica aerogels is an enormous challenge due to the difficulties in improving both mechanicalproperty and thermal insulation performance.In this work, silk fibroin was used as scaffold to improve the mechanical property and thermal insulationsub>2 was well-dispersed in the silk fibroin aerogel and composite aerogels exhibited enhanced mechanicalproperty.

Keywords： silica aerogel     silk fibroin     impregnation     thermal insulation     mechanical property    

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Experimental research on the mechanical property of prestressing steel wire during and after heating

ZHENG Wenzhong, HU Qiong, ZHANG Haoyu

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 2,   Pages 247-254 doi: 10.1007/s11709-007-0031-1

Abstract: The mechanical property of prestressing steel wire during and after heating is the key factor in theproperty indexes of the steel wire such as strength, modulus of elasticity, etc., degenerate continuouslyAccording to the experiment after heating, the mechanical property of steel wire varies little when theproperty indexes of the steel wire degenerate gradually when the highest temperature is higher thanThe law of mechanical property indexes of the wire is presented.
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Facile synthesis of polyaniline nanorods to simultaneously enhance the mechanical properties and wear

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1254-1266 doi: 10.1007/s11705-023-2297-3

Abstract: To enhance the mechanical properties and wear resistance of epoxy resin, polyaniline nanorods were firstthe phase structures and compositions of polyaniline nanorods, and their positive influences on the mechanical

Keywords： epoxy resin     polyaniline nanorods     mechanical property     tribological performance     wear mechanism    

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Effects of sheet thickness and material on the mechanical properties of flat clinched joint

Chao CHEN, Huiyang ZHANG, Shengdun ZHAO, Xiaoqiang REN

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 2,   Pages 410-419 doi: 10.1007/s11465-020-0618-y

Abstract: In this paper, the effects of sheet thickness and material on the mechanical properties of the clinchedCross-tensile and shearing tests were carried out to analyze the mechanical properties of the clinched

Keywords： clinched joint     flat clinching process     thickness configuration     material configuration     mechanical property    

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Nickel-based metal−organic framework-derived whisker-shaped nickel phyllosilicate toward efficiently enhanced mechanical

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 10,   Pages 1493-1504 doi: 10.1007/s11705-022-2168-9

Abstract: Then, the nickel phyllosilicate whiskers were evaluated to enhance the mechanical, thermal, flammable

Keywords： metal−organic framework     nickel phyllosilicate     whisker     epoxy resin     mechanical response     tribologicalperformance     flammable property    

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Physical and mechanical properties of municipal solid waste incineration residues with cement and coal

Toshifumi MUKUNOKI, Ta Thi HOAI, Daisuke FUKUSHIMA, Teppei KOMIYA, Takayuki SHIMAOKA

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 3,   Pages 640-652 doi: 10.1007/s11709-018-0502-6

Abstract: Indeed, physical and mechanical properties of these new materials should be initially examined at the

Keywords： mechanical property     municipal solid waste incineration residues     coal fly ash     unconfined compression test    

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Review of recent developments in cement composites reinforced with fibers and nanomaterials

Jianzhuang XIAO, Nv HAN, Yan LI, Zhongsen ZHANG, Surendra P. SHAH

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 1,   Pages 1-19 doi: 10.1007/s11709-021-0723-y

Abstract: The quest for high-performance construction materials is led by the development and application of new reinforcement materials for cement composites. Concrete reinforcement with fibers has a long history. Nowadays, many new fibers associated with high performance and possessing eco-environmental characteristics, such as basalt fibers and plant fibers, have received much attention from researchers. In addition, nanomaterials are considered as a core material in the modification of cement composites, specifically in the enhancement of the strength and durability of composites. This paper provides an overview of the recent research progress on cement composites reinforced with fibers and nanomaterials. The influences of fibers and nanomaterials on the fresh and hardened properties of cement composites are summarized. Moreover, future trends in the application of these fibers or of nanomaterial-reinforced cement composites are proposed.

Keywords： cement composites     fiber     nanomaterial     mechanical property     durability    

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Self-sacrificial templating synthesis of flower-like nickel phyllosilicates and its application as high-performance reinforcements in epoxy nanocomposites

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 4,   Pages 484-497 doi: 10.1007/s11705-021-2074-6

Abstract: Several properties of mechanical, thermal and tribological responses of epoxy nanocomposites were performed

Keywords： nickel phyllosilicate     flow-like structure     mechanical property     thermal stability     tribological performance    

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Design and Fabrication of Multiphase Composite Ceramic Tool Materials

Xu Chonghai,Ai Xing

Strategic Study of CAE 2001, Volume 3, Issue 3,   Pages 71-74

Abstract: Mathematical models have been built for the description of the relationships between the mechanical propertiesThe material is found to possess high comprehensive mechanical properties, which proves that the method

Keywords： ceramic tool material     multiphase composite     material design     model     mechanical property    

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A computational toolbox for molecular property prediction based on quantum mechanics and quantitativestructure-property relationship

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 152-167 doi: 10.1007/s11705-021-2060-z

Abstract: During these periods, one of the most important keys is the molecular property prediction models associatingIn this paper, a framework combining quantum mechanics and quantitative structure-property relationshipis established for fast molecular property predictions, such as activity coefficient, and so forth.which are stored in a database and further provided for the developments of quantitative structure-propertyThe whole framework has been carried out within a molecular property prediction toolbox.

Keywords： molecular property     quantum mechanics     quantitative structure-property relationship     heat of reaction    

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The Mechanics of 3D Multi-body Contact System of Long Shell and Tyres

Liang Xiaoling,Xiao Yougang,Li Xuejun

Strategic Study of CAE 2005, Volume 7, Issue 12,   Pages 41-44

Abstract:

According to the high iterative feature of shell and tyre structure, the multi-level substructure technique is adopted to set up the multi-body contact model between tyres and long shell. Applying parametric quadratic programming method, the multi-body contact FEM analysis of the No.2 rotary kiln in Henan Branch of China Aluminum Company is done, and the conclusions are as follows： The equivalent stress of shell at supports changes 5 times, and at other parts changes 4 times; the strength of shell at supports is weak, and at other parts is affluent; the strength of shell at the supports 2 and 3 is the weakest.

Keywords： shell     multi-body contact     multi-level substructure     mechanical property    

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Research progress of aluminium alloy automotive sheet and application technology

Ma Mingtu,You Jianghai,Lu Hongzhou,Wang Zhiwen

Strategic Study of CAE 2010, Volume 12, Issue 9,   Pages 4-20

Abstract:

Pre-treatment technology was deeply discussed to explain its importance in guaranteeing properties and formability of aluminium alloy automotive sheet. Some typical application of aluminium alloy automotive sheet to automotive industry was listed. Based on the author's knowledge and recognition of this paper and research progress present, the stress research contents about aluminium alloy automotive sheet were emphasized. Reducing cost and price of sheet and deeply developing application research are important work for the expending the application of aluminium alloy automotive sheet to the automobile.

Keywords： automobile lightweiting     aluminium alloy     mechanical property     formability     pre-treatment technology     stress    

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Synthesis and characterization of biodegradable thermoplastic elastomers derived from N′,N-bis (2-carboxyethyl)-pyromellitimide, poly(butylene succinate) and polyethylene glycol

Jiaojiao Shang, Guo Yao, Ronghui Guo, Wei Zheng, Long Gu, Jianwu Lan

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 457-466 doi: 10.1007/s11705-018-1716-9

Abstract: The chemical structures, crystallinities, thermal stabilities, mechanical properties, hydrophilicities

Keywords： thermoplastic elastomers     biodegradability     thermo-stability     mechanical property     aromatic bisimide moiety    

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Convective heat transfer in helical coils for constant-property and variable-property flows with high

Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG

Frontiers in Energy 2010, Volume 4, Issue 4,   Pages 546-552 doi: 10.1007/s11708-010-0116-8

Abstract: Both constant-property flows at normal pressure and variable-property flows at supercritical pressure

Keywords： convective heat transfer     helical coils     high Reynolds number     supercritical pressure     variable property    

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Title Author Date Type Operation

Experimental study on compaction-induced anisotropic mechanical property of rockfill material

Xiangtao ZHANG, Yizhao GAO, Yuan WANG, Yu-zhen YU, Xun SUN

Journal Article

A novel strategy for the construction of silk fibroin–SiO composite aerogel with enhanced mechanicalproperty and thermal insulation performance

Journal Article

Experimental research on the mechanical property of prestressing steel wire during and after heating

ZHENG Wenzhong, HU Qiong, ZHANG Haoyu

Journal Article

Facile synthesis of polyaniline nanorods to simultaneously enhance the mechanical properties and wear

Journal Article

Effects of sheet thickness and material on the mechanical properties of flat clinched joint

Chao CHEN, Huiyang ZHANG, Shengdun ZHAO, Xiaoqiang REN

Journal Article

Nickel-based metal−organic framework-derived whisker-shaped nickel phyllosilicate toward efficiently enhanced mechanical

Journal Article

Physical and mechanical properties of municipal solid waste incineration residues with cement and coal

Toshifumi MUKUNOKI, Ta Thi HOAI, Daisuke FUKUSHIMA, Teppei KOMIYA, Takayuki SHIMAOKA

Journal Article

Review of recent developments in cement composites reinforced with fibers and nanomaterials

Jianzhuang XIAO, Nv HAN, Yan LI, Zhongsen ZHANG, Surendra P. SHAH

Journal Article

Self-sacrificial templating synthesis of flower-like nickel phyllosilicates and its application as high-performance reinforcements in epoxy nanocomposites

Journal Article

Design and Fabrication of Multiphase Composite Ceramic Tool Materials

Xu Chonghai,Ai Xing

Journal Article

A computational toolbox for molecular property prediction based on quantum mechanics and quantitativestructure-property relationship

Journal Article

The Mechanics of 3D Multi-body Contact System of Long Shell and Tyres

Liang Xiaoling,Xiao Yougang,Li Xuejun

Journal Article

Research progress of aluminium alloy automotive sheet and application technology

Ma Mingtu,You Jianghai,Lu Hongzhou,Wang Zhiwen

Journal Article

Synthesis and characterization of biodegradable thermoplastic elastomers derived from N′,N-bis (2-carboxyethyl)-pyromellitimide, poly(butylene succinate) and polyethylene glycol

Jiaojiao Shang, Guo Yao, Ronghui Guo, Wei Zheng, Long Gu, Jianwu Lan

Journal Article

Convective heat transfer in helical coils for constant-property and variable-property flows with high

Yufei MAO, Liejin GUO, Bofeng BAI, Ximin ZHANG

Journal Article