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Independent continuous and mapping method of structural topology optimization based on the global stress

Yunkang SUI, Jili FENG, Hongling YE, Xirong PENG,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 130-142 doi: 10.1007/s11465-010-0011-3

Abstract: because the former becomes a multiple objective based on compliance objective functions. 2) With local constraints, such as an elemental stress limit, the topology is more difficult to be solved than with global constraintscontinuous mapping (ICM) method. 2) Based on the von Mises strength theory, all elements’ stress constraintsexamples show that the topology path of transferring forces can be obtained more easily by substituting globalstrain energy constraints for local stresses constraints, and the problem of load illness can be solved

Keywords： independent continuous mapping (ICM) method     global stresses constraints     topology optimization     continuum    

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Resistance to salt stresses by aerobic granular sludge: sludge property and microbial community

Frontiers of Environmental Science & Engineering doi: 10.1007/s11783-024-1861-y

Abstract:

● Aerobic granular sludge could withstand long-term saline stresses

Keywords： Aerobic granular sludge     Long-term saline stresses     Performance     Sludge property     Microbial community    

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Thermally developing forced convection and the corresponding thermal stresses in a porous plate channel

YANG Xiao, LIU Xuemei

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 57-61 doi: 10.1007/s11465-007-0009-7

Abstract: thermally developing forced convection of the local thermal equilibrium and the corresponding thermal stressesThe expressions of temperature, local Nusselt number and corresponding thermal stresses are obtained

Keywords： semi-infinite saturated     direction     interaction     skeleton     thermal equilibrium    

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Dynamic in-plane transversal normal stresses in the concrete face of CFRD

Neftalí SARMIENTO-SOLANO, Miguel P. ROMO

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 135-148 doi: 10.1007/s11709-018-0481-7

Abstract: such as concrete cracking and joint's water stops distressing where high in-plane transversal normal stressesprocedure is the dynamic complement of a method recently developed to evaluate in-plane transversal normal stressesthese two procedures in a sequential manner, it is possible to define the concrete slab in-plane normal stressesIn the above reference, the method to evaluate the concrete face in-plane transversal normal stresses

Keywords： CFR dams     dynamic analysis     in-plane normal stresses     concrete face    

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Residual stresses in coating-based systems, part II: Optimal designing methodologies

ZHANG Xiancheng, WU Yixiong, XU Binshi, WANG Haidou

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 2,   Pages 125-136 doi: 10.1007/s11465-007-0022-x

Abstract: single-layered coating-based systems, some typical approximations that are often used to predict the residual stresses

Keywords： function     different     substrate     interlayer     implementation    

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In-plane transversal normal stresses in the concrete face of CFRD induced by the first-dam reservoir

Neftalí SARMIENTO-SOLANO, Miguel P. ROMO

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 81-91 doi: 10.1007/s11709-016-0378-2

Abstract: narrowness and width of concrete slabs on the first-dam reservoir filling in-plane transversal normal stressesThe 3D analyses results show that high in-plane transversal compressive stresses develop within the concreteLikewise, in-plane induced tensile transversal stresses in the zones near the abutments increase theFrom the results of the 3D finite difference analyses, a simple method to estimate in-plane normal stresses

Keywords： concrete face     CFR dams     reservoir filling     slab in-plane stresses    

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Analysis of inventory level under procurement constraints in supply chain

CHANG Guangshu

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 3,   Pages 361-363 doi: 10.1007/s11465-007-0063-1

Abstract: Then, the change of the inventory level with and without the procurement constraints is analyzed, and

Keywords： supply     efficient reduction     system     expectation     procurement    

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Residual stresses in coating-based systems, part I: Mechanisms and analytical modeling

ZHANG Xiancheng, WU Yixiong, XU Binshi, WANG Haidou

Frontiers of Mechanical Engineering 2007, Volume 2, Issue 1,   Pages 1-12 doi: 10.1007/s11465-007-0001-2

Abstract: thermo-mechanical integrity of these systems is becoming a major concern and is strongly related to the residual stressesIn this paper, the sources of the residual stresses in the coating-based systems and the concept ofAnalytical models were developed to predict the residual stresses in multi-layered film structures or

Keywords： briefly     different     thermo-mechanical integrity     addition     residual    

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models to explore the solution space of large nonlinear systems underlying flowsheet simulations with constraints

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 2,   Pages 183-197 doi: 10.1007/s11705-021-2073-7

Abstract: Additional constraints from technical, economic, environmental, and safety considerations may furtherA priori, the design variable domains for which a simulation converges and fulfills the imposed constraintsHowever, that approach only considers the exploration of the convergent domain and ignores additional constraintsIn this paper, we present an improvement which particularly takes the fulfillment of constraints into

Keywords： machine learning     flowsheet simulations     constraints     exploration    

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Resilience strategies for sustainable supply chains under budget constraints in the post COVID-19 era

Frontiers of Engineering Management 2023, Volume 10, Issue 1,   Pages 143-157 doi: 10.1007/s42524-022-0236-y

Abstract: Therefore, the design of resilience solutions needs to fully consider the constraints of budgetary costsMost of the existing related literature only discusses optimal resilience solutions under certain cost constraintssatisfaction as indicators, to determine the changing laws of optimal resilience strategies when cost constraints

Keywords： sustainable supply chain     customer requirement     resilience efficiency     customer satisfaction     budget constraint    

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emission reduction targets with minimum abatement costs: An enterprise-level allocation method with constraints

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 2, doi: 10.1007/s11783-021-1459-6

Abstract:

• Quantification of efficiency and fairness of abatement allocation are optimized.

Keywords： Pollutant emission reduction allocation     Emission reduction measures     Total abatement cost     Economic efficiency     Abatement space    

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Toward energy-efficient urban rail transit with capacity constraints under a public health emergency

Frontiers of Engineering Management doi: 10.1007/s42524-024-3088-9

Abstract: Urban rail transit (URT) plays a pivotal role in mitigating urban congestion and emissions, positioning it as a sustainable transportation alternative. Nevertheless, URT’s function in transporting substantial numbers of passengers within confined public spaces renders it vulnerable to the proliferation of infectious diseases during public health crises. This study proposes a decision support model that integrates operational control strategies pertaining to passenger flow and train capacity utilization, with an emphasis on energy efficiency within URT networks during such crises. The model anticipates a URT system where passengers adhere to prescribed routes, adhering to enhanced path flow regulations. Simultaneously, train capacity utilization is intentionally limited to support social distancing measures. The model’s efficacy was assessed using data from the COVID-19 outbreak in Xi’an, China, at the end of 2021. Findings indicate that focused management of passenger flows and specific risk areas is superior in promoting energy efficiency and enhancing passenger convenience, compared to broader management approaches.

Keywords： energy efficiency     urban rail transit     public health emergency     targeted management     capacity utilization rate    

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Influence of welding residual stresses on the ductile crack growth resistance of circumferentially cracked

Xiaobo REN, Odd M. AKSELSEN, B?rd NYHUS, Zhiliang ZHANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 217-223 doi: 10.1007/s11709-012-0169-3

Abstract: Residual stresses were introduced into the model by using so-called eigenstrain method.Results show that residual stresses reduce the ductile crack growth resistance.However, the effect of residual stresses on ductile crack growth resistance decreases with the increase

Keywords： residual stress     ductile crack growth resistance     complete Gurson model     eigenstrain method    

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Investigating peak stresses in fitting and repair patches of buried polyethylene gas pipes

Reza KHADEMI ZAHEDI, Pouyan ALIMOURI, Hooman KHADEMI ZAHEDI, Mohammad SHISHESAZ

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 147-168 doi: 10.1007/s11709-019-0587-6

Abstract: Additionally, due to the application of pipe joints, and repair patches local stresses superimposed onThe computational analysis of stresses and the computer simulations are performed using ANSYS commercialThe maximum stress values in fitting and pipe are below the allowable stresses which shows the properAlthough the buried pipe is imposed to the maximum values of stresses, the PE100 socket is more sensitive

Keywords： Ansys software     polyethylene     buried pipelines     polyethylene joints     polyethylene patches     peak von Mises stress     soil-pipe interaction     temperature variation    

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Numerical Simulation of Contact Stresses under North Anchor Foundation of Runyang Suspension Bridge

Shao Guojian,Su Jingbo,Hu Qiang

Strategic Study of CAE 2006, Volume 8, Issue 6,   Pages 28-34

Abstract: the change of the water pressure under foundation, and then the change of the distribution of contact stressesBy the numerical simulation from the construction to running process, the change law of the contact stressesfor the engineering example, during different stages of concreting construction, though the contact stressesof different parts of anchor foundation take on different characters，the contact stresses of north anchor

Keywords： suspension bridge     anchor foundation     contact stresses     numerical simulation    

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Title Author Date Type Operation

Independent continuous and mapping method of structural topology optimization based on the global stress

Yunkang SUI, Jili FENG, Hongling YE, Xirong PENG,

Journal Article

Resistance to salt stresses by aerobic granular sludge: sludge property and microbial community

Journal Article

Thermally developing forced convection and the corresponding thermal stresses in a porous plate channel

YANG Xiao, LIU Xuemei

Journal Article

Dynamic in-plane transversal normal stresses in the concrete face of CFRD

Neftalí SARMIENTO-SOLANO, Miguel P. ROMO

Journal Article

Residual stresses in coating-based systems, part II: Optimal designing methodologies

ZHANG Xiancheng, WU Yixiong, XU Binshi, WANG Haidou

Journal Article

In-plane transversal normal stresses in the concrete face of CFRD induced by the first-dam reservoir

Neftalí SARMIENTO-SOLANO, Miguel P. ROMO

Journal Article

Analysis of inventory level under procurement constraints in supply chain

CHANG Guangshu

Journal Article

Residual stresses in coating-based systems, part I: Mechanisms and analytical modeling

ZHANG Xiancheng, WU Yixiong, XU Binshi, WANG Haidou

Journal Article

models to explore the solution space of large nonlinear systems underlying flowsheet simulations with constraints

Journal Article

Resilience strategies for sustainable supply chains under budget constraints in the post COVID-19 era

Journal Article

emission reduction targets with minimum abatement costs: An enterprise-level allocation method with constraints

Journal Article

Toward energy-efficient urban rail transit with capacity constraints under a public health emergency

Journal Article

Influence of welding residual stresses on the ductile crack growth resistance of circumferentially cracked

Xiaobo REN, Odd M. AKSELSEN, B?rd NYHUS, Zhiliang ZHANG

Journal Article

Investigating peak stresses in fitting and repair patches of buried polyethylene gas pipes

Reza KHADEMI ZAHEDI, Pouyan ALIMOURI, Hooman KHADEMI ZAHEDI, Mohammad SHISHESAZ

Journal Article

Numerical Simulation of Contact Stresses under North Anchor Foundation of Runyang Suspension Bridge

Shao Guojian,Su Jingbo,Hu Qiang

Journal Article