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Fracture behavior of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric material

Junhong GUO, Zixing LU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 3,   Pages 296-300 doi: 10.1007/s11465-011-0236-9

Abstract:

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.

Keywords： piezoelectric materials     elliptical hole     semi-permeable crack     energy release rate     analytic solution    

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Practical evaluation for water utilities in China by using analytic hierarchy process

Hong CHEN,Feng XIAO,Zhe BI,Ping XIAO,Dongsheng WANG,Ming YANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 131-137 doi: 10.1007/s11783-014-0718-1

Abstract: In this paper, we proposed a practical evaluation method based on the analytic hierarchy process (AHP

Keywords： analytic hierarchy process (AHP)     risk management     water quality failure     water quantity failure    

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Influencing factors and control measures of excavation on adjacent bridge foundation based on analytic

Shuangxi FENG, Huayang LEI, Yongfeng WAN, Haiyan JIN, Jun HAN

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2,   Pages 461-477 doi: 10.1007/s11709-021-0705-0

Abstract: In this paper, an innovative method is proposed that combines an analytic hierarchy process (AHP) with

Keywords： deep foundation pit excavation     adjacent bridge foundation     influencing factors     analytic hierarchy process    

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Application of fuzzy analytic hierarchy process model on determination of optimized pile-type

Lei MA, Shuilong SHEN, Jinhui ZHANG, Yang HUANG, Feng SHI

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 2,   Pages 252-257 doi: 10.1007/s11709-010-0017-2

Abstract: requirement of modern foundation construction, this study presents an efficient approach, in which analytic

Keywords： pile type     fuzzy synthetic evaluation     analytic hierarchy process (AHP)     optimal selection    

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A review of optimization modeling and solution methods in renewable energy systems

Frontiers of Engineering Management   Pages 640-671 doi: 10.1007/s42524-023-0271-3

Abstract: Web of Science database, this study reviews the decision-making optimization problems, models, and solution

Keywords： renewable energy system     bibliometrics     mathematical programming     optimization models     solution methods    

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Numerical solution, simulation and testing of the thermal dynamic characteristics of ball-screws

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 1,   Pages 28-36 doi: 10.1007/s11465-008-0007-4

Abstract: Based on the theory of heat transfer, this paper supplies a numerical solution to the non-homogeneousBy testing the thermal dynamic characteristics of the ball-screw, the numerical solution is validated

Keywords： numerical solution     temperature corresponding     temperature distribution     end-most     ball-screw    

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Analytical dynamic solution of a flexible cable-suspended manipulator

Mahdi BAMDAD

Frontiers of Mechanical Engineering 2013, Volume 8, Issue 4,   Pages 350-359 doi: 10.1007/s11465-013-0271-9

Abstract: In this paper, an analytic solution is provided to solve cable vibration.Also, a closed form solution can be adopted to improve the dynamic response to flexibility.

Keywords： parallel robot     flexible cable     suspended robot     dynamic    

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Solution properties and self-association of multi-blocks like copolymer P(AM/AA) prepared by template

ZHANG Yuxi, WU Feipeng, LI Miaozhen, WANG Erjian

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 68-71 doi: 10.1007/s11705-007-0014-8

Abstract: copolymers (TP) of acrylamide (AM) and acrylic acid (AA) prepared by template copolymerization in aqueous solutionDecreasing the value of pH or adding Ca ion to the copolymer solution will make phase separation occurWith the increase of the pH value of copolymer solution, the changes of the solution viscosity was similar

Keywords： aqueous solution     homopolyacrylic     copolymer solution     significant structure     presence    

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Yue’s solution of classical elasticity in

Zhong-qi Quentin YUE

Frontiers of Structural and Civil Engineering 2015, Volume 9, Issue 3,   Pages 215-249 doi: 10.1007/s11709-015-0298-6

Abstract: Findings of this solution formulation are further used in the companion paper for mathematical verificationsolutions have been named by other researchers as Yue’s approach, Yue’s treatment, Yue’s method and Yue’s solution

Keywords： elasticity     solution     layered solid     graded material    

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Simplified analytical solution for free vibration characteristics of Hardfill dam

XIAO Wei, HE Yunlong, ZHANG Yanfeng

Frontiers of Structural and Civil Engineering 2008, Volume 2, Issue 3,   Pages 219-225 doi: 10.1007/s11709-008-0037-3

Abstract: Formulas for computing natural frequencies and modes of Hardfill dams are derived based on one-dimensional shear wedge theory, in which the influences of the upstream concrete face and hydrodynamic pressure of water on the dams’ natural frequencies and modes are discussed. Furthermore, the seismic responses of Hardfill dams are calculated using response spectrum method. An example is analyzed to compare the differences of natural frequencies and modes between shear wedge method and FEM. Then the applicability and accuracy of shear wedge method to analyze free vibration characteristics of Hardfill dams are proven.

Keywords： upstream concrete     hydrodynamic pressure     vibration     one-dimensional     applicability    

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Unified solution of limit loads of thick wall cylinder subject to external pressure considering strain

CHEN Changfu, XIAO Shujun, YANG Yu

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 329-333 doi: 10.1007/s11709-007-0043-x

Abstract: Based on the unified strength theory [1], a unified strength criterion for strain softening materials, such as concrete or rock, was derived, and the elastic and plastic limit loads of a thick-walled cylinder made of these materials subject to external pressure were also given. In addition, the influence of some factors on the limit loads of such cylinders as the ratio of the external radius to internal radius,/, the coefficient , which reflects the effect of medium principal stress and the normal stress of the relevant surface on the material destroy degree, the ratio of tensile strength to compressed strength of the material, , and the damage variable
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Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 6,   Pages 1480-1493 doi: 10.1007/s11709-021-0776-y

Abstract: The method comprises the following steps: i) determination of the total head, ii) upper bound solution

Keywords： seismic active earth pressure     partial seepage flow     pore pressure     anisotropy     upper bound theorem    

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Enhanced solution representations for vehicle routing problems with split deliveries

Frontiers of Engineering Management   Pages 483-498 doi: 10.1007/s42524-023-0259-z

Abstract: In this study, we investigate a forest-based solution representation for split delivery vehicle routingThe new solution representation fully reflects the nature of split delivery, and can help reduce theTo highlight the effectiveness of this solution representation, we integrate these operators into a standardThe experimental results show that the new forest-based solution representation is particularly effective

Keywords： vehicle routing     multidepot     time windows     tabu search     split delivery    

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Additives effects on crystallization and morphology in a novel caustic aluminate solution decomposition

Ying ZHANG, Shili ZHENG, Yifei ZHANG, Hongbin XU, Yi ZHANG

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 1,   Pages 88-92 doi: 10.1007/s11705-009-0133-5

Abstract: A novel process of caustic aluminate solution decomposition by alcohol medium was developed by the InstituteThe crystallization ratios of sodium aluminate solution and crystal size of aluminum hydroxide, determined

Keywords： additive     crystallization     morphology     caustic aluminate solution     aluminium hydroxide    

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Experimental Demonstrations and Analysis for Continuous Rolling Tension Formula

Zhang Jinzhi,Zhao Houxin,Wang Zhe,Wang Baoluo

Strategic Study of CAE 2008, Volume 10, Issue 4,   Pages 73-77

Abstract:

The continuous rolling tension formula is the core of the theory and the application of continuous rolling system. A lot of studies have been made both in China and other countries. In 1960s, the author introduced continuous rolling differential formula, the dynamic tension formula for multi-stands and the stable state tension formula. All these formuls have been discussed in detail.The Japanese derived the tension formula in theory in 1970s and they did experimental demonstrations, among which the experimental results made by Motoho Asakawa is the most important. Herein, the tension formula is demonstrated by employing the data of the experimental results made by Motoho Asakawa and on-the-spot survey data of Baosteel 2050 heating continuous mill.

Keywords： tension formula     experimental demonstrations     analytic root     deterministic    

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Title Author Date Type Operation

Fracture behavior of two non-symmetrical collinear cracks emanating from an elliptical hole in a piezoelectric material

Junhong GUO, Zixing LU

Journal Article

Practical evaluation for water utilities in China by using analytic hierarchy process

Hong CHEN,Feng XIAO,Zhe BI,Ping XIAO,Dongsheng WANG,Ming YANG

Journal Article

Influencing factors and control measures of excavation on adjacent bridge foundation based on analytic

Shuangxi FENG, Huayang LEI, Yongfeng WAN, Haiyan JIN, Jun HAN

Journal Article

Application of fuzzy analytic hierarchy process model on determination of optimized pile-type

Lei MA, Shuilong SHEN, Jinhui ZHANG, Yang HUANG, Feng SHI

Journal Article

A review of optimization modeling and solution methods in renewable energy systems

Journal Article

Numerical solution, simulation and testing of the thermal dynamic characteristics of ball-screws

XIA Junyong, HU Youmin, WU Bo, SHI Tielin

Journal Article

Analytical dynamic solution of a flexible cable-suspended manipulator

Mahdi BAMDAD

Journal Article

Solution properties and self-association of multi-blocks like copolymer P(AM/AA) prepared by template

ZHANG Yuxi, WU Feipeng, LI Miaozhen, WANG Erjian

Journal Article

Yue’s solution of classical elasticity in

Zhong-qi Quentin YUE

Journal Article

Simplified analytical solution for free vibration characteristics of Hardfill dam

XIAO Wei, HE Yunlong, ZHANG Yanfeng

Journal Article

Unified solution of limit loads of thick wall cylinder subject to external pressure considering strain

CHEN Changfu, XIAO Shujun, YANG Yu

Journal Article

Upper bound solution to seismic active earth pressure of submerged backfill subjected to partial drainage

Journal Article

Enhanced solution representations for vehicle routing problems with split deliveries

Journal Article

Additives effects on crystallization and morphology in a novel caustic aluminate solution decomposition

Ying ZHANG, Shili ZHENG, Yifei ZHANG, Hongbin XU, Yi ZHANG

Journal Article

Experimental Demonstrations and Analysis for Continuous Rolling Tension Formula

Zhang Jinzhi,Zhao Houxin,Wang Zhe,Wang Baoluo

Journal Article