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Evaluation of the compatibility between rubber and asphalt based on molecular dynamics simulation

Fucheng GUO, Jiupeng ZHANG, Jianzhong PEI, Weisi MA, Zhuang HU, Yongsheng GUAN

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 2, Pages 435-445 doi: 10.1007/s11709-019-0603-x

Abstract: Storage stability of asphalt and rubber is related to the compatibility and also influenced by rubberThe solubility parameter and binding energy between rubber and asphalt were obtained to evaluate the compatibilitybetween rubber and asphalt as well as the influence of rubber content on compatibility.Results show that all three kinds of rubber are commendably compatible with asphalt, where the compatibility

Keywords： rubber asphalt compatibility rubber content molecular dynamics simulation

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The development and application of the new type high-viscosity modified asphalt

Yang Linjiang

Strategic Study of CAE 2008, Volume 10, Issue 12, Pages 92-96

Abstract:

According to the technical requirements of Hangzhou Bay Bridge deck pavement for high-viscosity modified asphalt, a new type of high-viscosity modified asphalt was developed. By analyzing the base asphalt, SBS, the infrared spectra of chemical additives, on the basis of studying the microstructure changing laws of modified asphalt in modifying process, it is proposed to use the modified asphalt compatible design, which is SBS plus chemical reaction agent tackifier TW-1 and compatibilizer TW-2, so that the low-temperature ductility and elastic resilience of the modified asphalt are improved, at the same time, the dynamic viscosity of 60 ℃ is greatly enhanced, and the construction will not be affected. The high-viscosity modified asphalt has been successfully applied to Hangzhou Bay Bridge project.

Keywords： Hangzhou Bay Bridge high-viscosity modified asphalt compatibility mechanism infrared spectroscopy

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Development of the Special Missile Equipment and Simulation Training System

Huang Xianxiang,Xie Jian,Gao Qinhe

Strategic Study of CAE 2001, Volume 3, Issue 2, Pages 65-70

Abstract: auto erecting and level adjusting, the missile high precision orientation, and the electromagnetic compatibility

Keywords： missile simulation training hydraulic system subdivision control electromagnetic compatibility

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Analysis on the principle-agent model in construction project supply chain

Wu Yuhua,Zhang Qingmin

Strategic Study of CAE 2008, Volume 10, Issue 5, Pages 75-78

Abstract:

General form of principle-agent model in integrated supply chain has been discussed from principle-agent Theories. Based on the above model, construction project supply chain one-period principle-agent model and multi-period construction project supply chain reputation model have been built with the characters of principle and agent of construction project integrated supply chain.

Keywords： principle- agent model incentive compatibility reputation model random walk

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A Study About IC and IR in Principal-gent RelationshipUnder the Engineer Supervision Institution

Qin Xuan

Strategic Study of CAE 2007, Volume 9, Issue 4, Pages 45-49

Abstract:

According to principal-agent theory, the Incentive compatibility constraintThe conclusions are drawn:The incentive compatibility constraint (IC) is more important than participationconstraint (IR), If the mechanism doesn't satisfy the needs of IC, then it will be inefficient.

Keywords： engineer supervision employer engineer principal-gent incentive compatibility constraint(IC) participation

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Theory and method of mechanism system design

Huijun ZOU, Qinghua LIANG, Qing ZHANG

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 4, Pages 399-411 doi: 10.1007/s11465-010-0116-8

Abstract: Conceptual design is the most critical and creative phase of design. Recently, increasing attention has been directed to supporting conceptual-level computer aided creative design and its theories and methodologies. Specifically, for conceptual design of mechanical products, this paper presents a novel function solving model for mechanical product design and highlights the importance of systematic synthesis to achieve creative design. Then it builds a framework as a function-effect-process-action- mechanisms (FEPAM) mapping process, which enables creative design on the basis of conceiving different action schemes. After that, several key points are elaborated including 1) representing and decomposition methods of functions and motion behaviors; 2) action scheme representing method based on network plan techniques; and 3) variation and creation methods based on action scheme transformations.

Keywords： mechanism system creative design process model function solving model process action procedure mechanismsknowledge base principle of mechanism system composition

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Formation mechanism and modeling of surface waviness in incremental sheet forming

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 2, doi: 10.1007/s11465-022-0679-1

Abstract: surface quality has always been a challenge for incremental sheet forming (ISF), whereas the generation mechanismIn this paper, the formation mechanism and the prediction of waviness are both investigated through experimentsengineering application, a theoretical model for waviness height is proposed based on the generation mechanismThis work is favorable for the perfection of formation mechanism and control of surface quality in ISF

Keywords： surface waviness incremental sheet forming numerical simulation formation mechanism deformation history

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The application of polycarboxylates water-reducing admixture to passenger dedicated line engineering

Huang Zhijiu

Strategic Study of CAE 2009, Volume 11, Issue 1, Pages 75-80

Abstract: At present the key for polycarboxylates application is to settle the compatibility with cement andkeep

Keywords： polycarboxylate water-reducing admixtures compatibility of cement quality retention high performance

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Compatibility of Utilization and Protection ofTidal Flat and Wetland：A Case Study in Shanghai Area

Chen Jiyu,Cheng Heqin,Dai Zhijun

Strategic Study of CAE 2007, Volume 9, Issue 6, Pages 11-17

Abstract:

As an important natural resource, tidal flat imposed wetland is expected to be kept harmonious balance between utilization and protection. Based on the case of Shanghai area in the Changjiang Estuary, concept of tidal flat is firstly discussed on its spatial range in this paper. Fundamental features of tidal flat, and its responsibility to the discharge change of water and sediment transported by the Changjiang River, intensity of exploitation and demands of wetland protection are discussed. Present dynamic processes and change tendency of different types of tidal flat are illuminated in detail. Some new-points are proposed for the reasonable exploitation, dynamic protection and ecosystem resilience of each individual tidal flat and imposed wetland. Some suggestions are also proposed to make a further study about the sustainable spatial resource exploitation of offshore in Shanghai area.

Keywords： Shanghai area tidal flat wetland utilization protection

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Autogenous healing mechanism of cement-based materials

Frontiers of Structural and Civil Engineering Pages 948-963 doi: 10.1007/s11709-023-0960-3

Abstract: However, systematic research on the autogenous healing mechanism of cement-based materials is lackingScanning electron microscopy and optical microscopy were used to examine the autogenous healing mechanism

Keywords： autogenous healing cement-based materials healing mechanism aggregation effect

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Optimal design of a linkage–cam mechanism-based redundantly actuated parallel manipulator

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3, Pages 451-467 doi: 10.1007/s11465-021-0634-6

Abstract: A redundantly actuated parallel manipulator (RAPM) with mixed translational and rotational degrees of freedom (DOFs) is challenged for its dimensionally homogeneous Jacobian modeling and optimal design of architecture. In this paper, a means to achieve redundant actuation by adding kinematic constraints is introduced, which reduces the DOFs of the end-effector (EE). A generic dimensionally homogeneous Jacobian is developed for this type of RAPMs, which maps the generalized velocities of three points on the EE to the joint velocities. A new optimization algorithm derived from this dimensionally homogeneous Jacobian is proposed for the optimal design of this type of RAPMs. As an example, this paper presents a spatial RAPM involving linkages and cam mechanisms. This RAPM has 4 DOFs and 6 translational actuations. The linkage lengths and the position of the universal joints of the RAPM are optimized based on the dimensionally homogeneous Jacobian.

Keywords： redundant actuation parallel manipulator linkage–cam mechanism Jacobian optimal design

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Cryogenic minimum quantity lubrication machining: from mechanism to application

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4, Pages 649-697 doi: 10.1007/s11465-021-0654-2

Abstract: Second, the cooling–lubrication mechanism of CMQL and its influence mechanism on material hardness, cuttingThe effects of CMQL are systematically analyzed based on its mechanism and application form.

Keywords： cryogenic minimum quantity lubrication (CMQL) cryogenic medium processing mode device application mechanism

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Production and application of biosurfactants

Han Shuangyan,Ren Changqiong,Lin Ying

Strategic Study of CAE 2009, Volume 11, Issue 4, Pages 26-30

Abstract: Because of their unique properties of great bio-compatibility, low toxicity, high biodegradability and

Keywords： biosurfactants microbial fermentation enzymatic synthesis bio-compatibility biodegradability

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Review on mechanism and process of surface polishing using lasers

Arun KRISHNAN, Fengzhou FANG

Frontiers of Mechanical Engineering 2019, Volume 14, Issue 3, Pages 299-319 doi: 10.1007/s11465-019-0535-0

Abstract: This article gives a detailed overview of the laser polishing mechanism by explaining various process

Keywords： laser polishing surface roughness process parameters mechanism

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Creation and integration mechanism of instrumentation flexible developing system

Xiaoli XU, Qiushuang LIU

Frontiers of Mechanical Engineering 2011, Volume 6, Issue 2, Pages 235-240 doi: 10.1007/s11465-011-0122-5

Abstract: flexible developing system (IFDS), this paper discusses the creation and open flexible integration mechanismBased on the operation mechanism of the modern instrumentation developing system and the research and

Keywords： modern instrumentation developing flexible interconnection flexible integration mechanism rapid integration