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Reassessment of fenestration characteristics for residential buildings in hot climates: energy and economic analysis

Ali ALAJMI, Hosny ABOU-ZIYAN, Hamad H. Al-MUTAIRI

Frontiers in Energy 2022, Volume 16, Issue 4,   Pages 629-650 doi: 10.1007/s11708-021-0799-z

Abstract: The considered issues are the window glazing property (ten commercial glazing types), facade orientationThus, using low-performance windows on buildings yields larger effects of WWR, facade orientation, andThe best facade orientation is changed from north to south according to the glazing properties.

Keywords： parametric analysis     high-performance window     window-to-wall ratio (WWR)     facade orientation     solar shading    

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Numerical study of thermal characteristics of double skin facade system with middle shade

Shaoning LIU, Xiangfei KONG, Hua YANG, Minchao FAN, Xin ZHAN

Frontiers in Energy 2021, Volume 15, Issue 1,   Pages 222-234 doi: 10.1007/s11708-017-0480-8

Abstract: Architectural shade is an effective method for improving building energy efficiency. A new shade combined with the double skin façade (DSF) system, called middle shade (MS), was introduced and developed for buildings. In this paper, a 3D dynamic simulation was conducted to analyze the influence of MS combined with DSF on the indoor thermal characteristics. The research on MS for DSF involves the temperature, the ventilation rate, the velocity distribution of the air flow duct, and the indoor temperature. The results show that the angle and position of the shade in the three seasons are different, and different conditions effectively enhance the indoor thermal characteristics. In summer, the appearance of MS in DSF makes the indoor temperature significantly lower. The indoor temperature is obviously lower than that of the air flow duct, and the temperature of the air flow duct is less affected by MS. The influence of the position of blinds on indoor temperature and ventilation rate is greater than the influence of the angle of blinds. According to the climate characteristics of winter and transition season, in winter, early spring, and late autumn, the indoor temperature decreases with the increase of the position of blinds at daytime, but the opposite is true at night. The results found in this paper can provide reference for the design and use of MS combined with DSF in hot summer and cold winter zone.

Keywords： middle shade     position     thermal characteristics     double skin facade    

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Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3,   Pages 376-382 doi: 10.1007/s11709-010-0086-2

Abstract: Pre-tensioned high strength trusses using alloy steel bar are widely used as glass wall supporting systems because of the high degree of transparency. The breakage of glass panes in this type of system occurs occasionally, likely to be due to error in design and analysis in addition to other factors like glass impurity and stress concentration around opening in a spider system. Most design does not consider the flexibility of supports from finite stiffness of supporting steel or reinforced concrete beams. The resistance of lateral wind pressure of the system makes use of high tension force coupled with the large deflection effect, both of which are affected by many parameters not generally considered in conventional structures. In the design, one must therefore give a careful consideration on various effects, such as support settlement due to live loads and material creep, temperature change, pre-tension force, and wind pressure. It is not uncommon to see many similar glass wall systems fail in the wind load test chambers under a design wind speed. This paper presents a rigorous analysis and design of this type of structural systems used in a project in Hong Kong, China. The stability function with initial curvature is used in place of the cubic function, which is only accurate for linear analysis. The considerations and analysis techniques are believed to be of value to engineers involved in the design of the structural systems behaving nonlinearly.

Keywords： tension system     glass wall     nonlinear analysis     pre-tensioning     second-order analysis    

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Numerical investigation of the influence of casting techniques on fiber orientation distribution in ECC

Chung Nguyen VAN; Hai TRAN THANH; Thuc Nhu NGUYEN; Jianchun LI

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 11,   Pages 1424-1435 doi: 10.1007/s11709-022-0870-9

Abstract: The orientation of fibers, in this regard, is one of the major factors influencing the ductile behaviorIn this study, fiber orientation distributions in ECC beams influenced by different casting techniquesThe simulation results show a significant impact of the casting direction on fiber orientation distributionsIn addition, casting positions show negligible influences on the orientation distribution of fibers in

Keywords： ECC     fiber orientation distribution     casting direction     casting position    

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Crystallographic orientation effect on cutting-based single atomic layer removal

Wenkun XIE, Fengzhou FANG

Frontiers of Mechanical Engineering 2020, Volume 15, Issue 4,   Pages 631-644 doi: 10.1007/s11465-020-0599-x

Abstract: In the present study, the crystallographic orientation effect on the cutting-based single atomic layer

Keywords： ACSM     single atomic layer removal mechanism     crystallographic orientation effect     mechanical cutting     Manufacturing    

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Tomographic diagnosis of defects in hydraulic concrete structure

ZHAO Mingjie, XU Xibin

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 226-232 doi: 10.1007/s11709-008-0027-5

Abstract: The influences of water, scale and orientation of defect, processing methods and theoretical model onDefects with the orientation perpendicular to the direction of the diagnosis may have higher precision

Keywords： satisfactory     processing     orientation     tomographic diagnosis     orientation perpendicular    

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Planar jumping with stable landing through foot orientation design and ankle joint control

Qilong YUAN, I-Ming CHEN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 2,   Pages 100-108 doi: 10.1007/s11465-012-0318-3

Abstract:

This paper introduces a method to generate the planar jumping motion for biped robot. In this work, through determining the upper body posture trajectory in the flight phase, the foot landing posture is made to be flat while landing. Together with properly designing the trajectory for local center of gravity and the foot landing velocity, the soft landing trajectory is generated. A controller on the ankle joint is added to avoid significant impact with the ground and stabilize the robot after landing. Jumping motion with stable landing is achieved in a dynamic simulation environment based on this method.

Keywords： biped jumping     stable landing control     jumping motion generation    

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Build orientation determination of multi-feature mechanical parts in selective laser melting via multi-objective

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 2, doi: 10.1007/s11465-022-0737-8

Abstract: The build orientation is crucial in AM because it affects the as-built part, including its part accuracyThis study proposes a method to determine the build orientation of multi-feature mechanical parts (MFMPssimilarity to the ideal solution and cosine similarity measure is presented to select an optimal build orientationmeasured average sampling surface roughness of the most crucial feature of the bracket in the original orientation

Keywords： selective laser melting (SLM)     build orientation determination     multi-feature mechanical part (MFMP)    

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Tall Buildings with Dynamic Facade Under Winds Article

Fei Ding, Ahsan Kareem

Engineering 2020, Volume 6, Issue 12,   Pages 1443-1453 doi: 10.1016/j.eng.2020.07.020

Abstract: ., by implementing a dynamic facade.

Keywords： Tall buildings     Aerodynamic shape tailoring     Autonomous morphing     Cyber–physical system     Computational design     Surrogate modeling     Machine learning    

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the mechanical performance and damage failure characteristics of laminated composites based on fiber orientation

Frontiers of Structural and Civil Engineering   Pages 1357-1369 doi: 10.1007/s11709-023-0996-4

Abstract: The influence of fiber orientation angle on the mechanical properties and stiffness degradation of theconducted using finite element analysis and analytical approaches to evaluate the influence of fiber orientation

Keywords： fiber orientation     composite laminates     stiffness degradation     analytical approaches     finite element    

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A New Look at Building Facades as Infrastructure Perspective

Doris Sung

Engineering 2016, Volume 2, Issue 1,   Pages 63-68 doi: 10.1016/J.ENG.2016.01.008

Abstract: Instead, the facade of a building performs either as a component that focuses only on the quality ofThis essay proposes the rethinking of the building facade as a steward of outdoor pedestrian welfare,

Keywords： Building facade infrastructure     Public pedestrian comfort     Building facades for public Health    

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A General Strategy to Electrospin Nanofibers with Ultrahigh Molecular Chain Orientation Article

Xian Wen, Jian Xiong, Zhaoyang Sun, Liming Wang, Jianyong Yu, Xiaohong Qin

Engineering 2023, Volume 29, Issue 10,   Pages 179-187 doi: 10.1016/j.eng.2022.09.008

Abstract:

The degree of polymer chain orientation is a key structural parameter that determines the mechanicalHowever, understanding and significantly tuning the orientation of fiber macromolecular chains remainHerein, we propose a novel electrospinning technique that can efficiently modulate molecular chain orientationAs a result, the macromolecular chain orientation of polyethylene oxide (PEO) nanofibers was significantlyThis work guides a new perspective for the preparation of advanced electrospun nanofibers with optimal orientation

Keywords： Molecular orientation     Electrospinning     Nanofibers     Electric field     Polyethylene oxide    

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Management and Practice of Large-Scale Modern Coal Enterprises

An Wang

Frontiers of Engineering Management 2014, Volume 1, Issue 1,   Pages 13-17 doi: 10.15302/J-FEM-2014004

Abstract: As the coal-dominated energy structure will remain unchanged in the short term, the sustainable development of the coal industry is still serving as one of the foundations for the sound development of the national economy. The construction of modernized mines based on "four orientations", that is, orientations of scale production, modern technology and equipment, informationized management and professional working team, has been rapidly enhancing its development in the recent decade. However, in the next decade or an even longer period, the industry, with the energy centre shifting to the West of China, will be exposed to new options and development in the layout, structure, model, technology, etc.

Keywords： coal industry     sustainable development     the four-orientation model    

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A Further Discussion on Trends in the Development of Advanced Manufacturing Technology

YANG Shu-zi, WU Bo, LI Bin

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 1,   Pages 1-5 doi: 10.1007/s11465-005-0002-y

Abstract: priority to in development, while stressing on the principles of independence, innovation and human orientation

Keywords： Development     development     integration     networking     orientation    

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A comprehensive review of greenhouse shapes and its applications

Ravinder Kumar SAHDEV,Ashwani Kumar DHINGRA,Mahesh KUMAR

Frontiers in Energy 2019, Volume 13, Issue 3,   Pages 427-438 doi: 10.1007/s11708-017-0464-8

Abstract: For the successful design of a greenhouse, the selection of a suitable shape and orientation is of greatThe orientation of greenhouses is kept east–west for maximum utilization of solar radiations.

Keywords： greenhouse shapes     drying     solar energy     agriculture products     orientation    

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Title Author Date Type Operation

Reassessment of fenestration characteristics for residential buildings in hot climates: energy and economic analysis

Ali ALAJMI, Hosny ABOU-ZIYAN, Hamad H. Al-MUTAIRI

Journal Article

Numerical study of thermal characteristics of double skin facade system with middle shade

Shaoning LIU, Xiangfei KONG, Hua YANG, Minchao FAN, Xin ZHAN

Journal Article

Nonlinear analysis of pre-tensioned glass wall facade by stability function with initial imperfection

Siu-Lai CHAN, Yaopeng LIU, Andy LEE,

Journal Article

Numerical investigation of the influence of casting techniques on fiber orientation distribution in ECC

Chung Nguyen VAN; Hai TRAN THANH; Thuc Nhu NGUYEN; Jianchun LI

Journal Article

Crystallographic orientation effect on cutting-based single atomic layer removal

Wenkun XIE, Fengzhou FANG

Journal Article

Tomographic diagnosis of defects in hydraulic concrete structure

ZHAO Mingjie, XU Xibin

Journal Article

Planar jumping with stable landing through foot orientation design and ankle joint control

Qilong YUAN, I-Ming CHEN

Journal Article

Build orientation determination of multi-feature mechanical parts in selective laser melting via multi-objective

Journal Article

Tall Buildings with Dynamic Facade Under Winds

Fei Ding, Ahsan Kareem

Journal Article

the mechanical performance and damage failure characteristics of laminated composites based on fiber orientation

Journal Article

A New Look at Building Facades as Infrastructure

Doris Sung

Journal Article

A General Strategy to Electrospin Nanofibers with Ultrahigh Molecular Chain Orientation

Xian Wen, Jian Xiong, Zhaoyang Sun, Liming Wang, Jianyong Yu, Xiaohong Qin

Journal Article

Management and Practice of Large-Scale Modern Coal Enterprises

An Wang

Journal Article

A Further Discussion on Trends in the Development of Advanced Manufacturing Technology

YANG Shu-zi, WU Bo, LI Bin

Journal Article

A comprehensive review of greenhouse shapes and its applications

Ravinder Kumar SAHDEV,Ashwani Kumar DHINGRA,Mahesh KUMAR

Journal Article