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System Simulation for Large-scale Bridge Construction Schedule Based on 4D CAD

Zhang Zhengfeng,Fu Jinqiang,Wu Kangxin,Zhang Fayu

Strategic Study of CAE 2006, Volume 8, Issue 1,   Pages 63-66

Abstract: Combined the object-oriented system simulation technology for complex engineering system with the CADdigital modeling technology, the system simulation of bridge construction based upon 4D CAD was presented, which linked a 3D model of a construction project with a project activity schedule element.And the corresponding software of visualization simulating system, based on 4D CAD, for construction

Keywords： construction schedule     system simulation     4D CAD     cable-stayed bridge    

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Preliminary Investigation of the Reversible 4D Printing of a Dual-Layer Component Article

Amelia Yilin Lee, Jia An, Chee Kai Chu, Yi Zhang

Engineering 2019, Volume 5, Issue 6,   Pages 1159-1170 doi: 10.1016/j.eng.2019.09.007

Abstract: manufacturing and advances in shape memory materials have fueled the progress of four-dimensional (4DWith increasing improvements in design, reversible 4D printing—or two-way 4D printing—hasneed for human interference, as the programming is completely driven by external stimuli, which allows 4D-printedThis study proposes a new reversible 4D printing actuation method.This understanding of the curvature will provide a great degree of control over the reversible 4D-printed

Keywords： 4D printing     Additive manufacturing     Shape memory polymer     Reversible 4D printing     Two-way 4D printing    

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Laws of 4D Printing Article

Farhang Momeni, Jun Ni

Engineering 2020, Volume 6, Issue 9,   Pages 1035-1055 doi: 10.1016/j.eng.2020.01.015

Abstract: Accordingly, four-dimensional (4D) printing is a manufacturing process that involves multiple researchfields. 4D printing conserves the general attributes of 3D printing (such as material waste reductionshow that two types of time constants are needed to capture the correct time-dependent behavior of 4Dintroduce the concept of mismatch-driven stress at the interface of active and passive materials in 4Dwith governing equations can serve as general design principles for future research in the field of 4D

Keywords： Manufacturing     Stimuli-responsive materials     Mechanics of materials     Time constant     4D printing    

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Two-Way 4D Printing: A Review on the Reversibility of 3D-Printed Shape Memory Materials

Amelia Yilin Lee, Jia An, Chee Kai Chua

Engineering 2017, Volume 3, Issue 5,   Pages 663-674 doi: 10.1016/J.ENG.2017.05.014

Abstract: manufacturing and advances in shape memory materials have fueled the progress of four-dimensional (4D, but reversible 4D printing, or two-way 4D printing, will fully eliminate the need for human interference, current findings regarding 4D printing in alloys and polymers, and their respective limitations.For reversible 4D printing, the methods of 3D printing, mechanisms used for actuation, and strategiesFinally, prospective future research directions in reversible 4D printing are suggested.

Keywords： 4D printing     Additive manufacturing     Shape memory material     Smart materials     Shape memory alloy     Shape memory    

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Development of Bioimplants with 2D, 3D, and 4D Additive Manufacturing Materials Review

Guo Liu, Yunhu He, Pengchao Liu, Zhou Chen, Xuliang Chen, Lei Wan, Ying Li, Jian Lu

Engineering 2020, Volume 6, Issue 11,   Pages 1232-1243 doi: 10.1016/j.eng.2020.04.015

Abstract: However, 3D printable materials are still quite limited for the fabrication of bioimplants.In this work, 2D/3D AM materials for bioimplants are reviewed.Furthermore, inspired by Tai Chi, a simple yet novel soft/rigid hybrid 4D AM concept is advanced to developcomplex and dynamic biological structures in the human body based on 4D printing hybrid ceramic precursor3D/4D AM materials can be anticipated.

Keywords： Bioprinting     2D additive manufacturing     3D printing     4D printing     Bioimplants    

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Identifying stakeholders’ roles and relevant project documents for 4D-based collaborative decision making

Veronika BOLSHAKOVA, Annie GUERRIERO, Gilles HALIN

Frontiers of Engineering Management 2020, Volume 7, Issue 1,   Pages 104-118 doi: 10.1007/s42524-019-0041-4

Abstract: To fully understand and effectively implement 4D building information modelling (BIM) models and methodsThis article studies the convergence between uses of 4D BIM and digital project documents.We hypothesize that a clear visualization of the construction simulation through a 4D model is a usefulIt then introduces a proposition for 4D BIM uses implementation by the project development phase.It concludes by summarizing stakeholders’ roles and documents relevant to 4D BIM uses.

Keywords： BIM     4D BIM     4D BIM use     AEC project management     collaboration     decision making    

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Semantics for linking data from 4D BIM to digital collaborative support

Calin BOJE, Veronika BOLSHAKOVA, Annie GUERRIERO, Sylvain KUBICKI, Gilles HALIN

Frontiers of Engineering Management 2022, Volume 9, Issue 1,   Pages 104-116 doi: 10.1007/s42524-020-0111-7

Abstract: Synchronous collaboration sessions within the context of 4D BIM position construction professionals intoThe model is designed by considering various 4D BIM model uses while a digital multiuser touch tableAlthough 4D BIM model data can be imported by using standard formats, capturing data about the social

Keywords： 4D BIM     ontology     IFC     decision-making     linked data     collaboration     planning    

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Research and Development of CAD/CAPP/CAM Integrated System

Wei Erwei,Liang Muyang,Yang Ping

Strategic Study of CAE 2000, Volume 2, Issue 4,   Pages 59-63

Abstract:

In this paper a practical CAD/CAPP/CAM integrated system is introduced.developed by mechanical designers, process planners and NC progragmmers on the basis of a commercial CAD

Keywords： CAD     CAPP     CAM     feature recognition    

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A Theoretical Summary and Mathematics Expression on the Regulation of Life in Meridian (Jing-Iuo) Science

Zhang Renxiang,Zhang Renji

Strategic Study of CAE 2005, Volume 7, Issue 4,   Pages 42-46

Abstract:

The meridian (Jing-Luo) is a core principle of Chinese medicine. The meridian plays a central role in the regulation of human health and vitality. In the past 50 years,the scientific evidence has been gathered via physiological experiments to confirm the biological basis of the human meridian pathway phenomenon. Meridian Science has been established as a new branch of natural science to advance and promote the study of this important phenomenon for human life. In this paper, the authors describe the theoretical concept of the meridian and mathematics expression, its relationship to an efficient meridian circadian cycle, and its significance to human life.

Keywords： comprehension     meridian science     principal of bi-way transforming modulation in symmetry and asymmetry     diagram of 4D    

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CNC programming system for complex components based on KBE within integrated environment of CAD/CAPP/

Shengwen ZHANG, Guicheng WANG, Liang ZHANG, Xifeng FANG

Frontiers of Mechanical Engineering 2009, Volume 4, Issue 1,   Pages 97-102 doi: 10.1007/s11465-009-0007-z

Abstract: knowledge based engineering (KBE) into the field of CNC programming within the integrated environment of CADThis paper constructs the architecture of CNC programming based on KBE within CAD/CAPP/CAM and exploresThe integration of the CAD/CAM system and the CAPP system of enterprises has been achieved by takingthe powerful CAD/CAM system of UG NX as a platform.The prototype system of CNC programming for complex components based on KBE within CAD/CAPP/CAM has been

Keywords： NC programming     CAD/CAPP/CAM     KBE    

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A Novel Attribute-Based Encryption Approach with Integrity Verification for CAD Assembly Models Article

Yueting Yang, Fazhi He, Soonhung Han, Yaqian Liang, Yuan Cheng

Engineering 2021, Volume 7, Issue 6,   Pages 787-797 doi: 10.1016/j.eng.2021.03.011

Abstract: This paper presents a novel attribute-based encryption (ABE) approach for computer-aided design (CAD)contained in an assembly ciphertext (ACT) file, are adapted for content keys decryption instead of CADABE framework has the ability to combine the deformation protection method with a content privacy of CADExperimental simulation on typical CAD assembly models demonstrates that the proposed approach is feasible

Keywords： Information security     Cloud-based design and manufacture     Co-design     CAD assembly models     Attribute-based    

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Optimal localization of complex surfaces in CAD-based inspection

XU Jinting, LIU Weijun, SUN Yuwen

Frontiers of Mechanical Engineering 2008, Volume 3, Issue 4,   Pages 426-433 doi: 10.1007/s11465-008-0068-4

Abstract: Complex surface inspection requires the optimal localization of the measured surface related to the design surface so that the two surfaces can be compared in a common coordinate frame. This paper presents a new technique for solving the localization problem. The basic approach consists of two steps: 1) rough localization of the measured points to the design surface based on curvature features, which can produce a good initial estimate for the optimal localization; 2) fine localization based on the least-square principle so that the deviation between the measured surface and the design surface is minimized. To efficiently compute the closest points on the design surface of the measured points, a novel method is proposed. Since this approach does not involve an iterative process of solving non-linear equations for the closest points, it is more convenient and robust. The typical complex surface is used to test the developed algorithm. Analysis and comparison of experimental results demonstrate the validity and applicability of the algorithm.

Keywords： deviation     comparison     non-linear     localization     inspection    

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Study of Conceptual Design of Extension for Mechanical Products

Zhao Yanwei

Strategic Study of CAE 2001, Volume 3, Issue 5,   Pages 67-71

Abstract: to resolve the bottleneck problem in theoretic studying and engineering realization of intelligent CAD

Keywords： conceptual design     mechanical product     intelligent CAD     extension    

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Selecting and prioritizing key factors for CAD/CAM software in small- and medium-sized enterprises using

Ghulam ZAKRIA, Zailin GUAN, Yasser RIAZ, Mirza JAHANZAIB, Anwar KHAN,

Frontiers of Mechanical Engineering 2010, Volume 5, Issue 2,   Pages 157-164 doi: 10.1007/s11465-010-0017-x

Abstract: In today’s fast-paced world, computer-aided design/computer-aided manufacturing (CAD/CAM) systemsPrior to investment in a CAD/CAM system, it is essential for investor to know how to maximize their benefitsfrom buying a new or by changing an existing CAD/CAM system.a methodology to assist small- and medium-sized manufacturing companies of Pakistan in selecting a CADTo accomplish this purpose, data have been collected about current CAD/CAM systems.

Keywords： computer-aided design (CAD)     computer-aided manufacturing(CAM)     SMEs     analytical hierarchal approach     Expert    

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Title Author Date Type Operation

System Simulation for Large-scale Bridge Construction Schedule Based on 4D CAD

Zhang Zhengfeng,Fu Jinqiang,Wu Kangxin,Zhang Fayu

Journal Article

Preliminary Investigation of the Reversible 4D Printing of a Dual-Layer Component

Amelia Yilin Lee, Jia An, Chee Kai Chu, Yi Zhang

Journal Article

Laws of 4D Printing

Farhang Momeni, Jun Ni

Journal Article

Two-Way 4D Printing: A Review on the Reversibility of 3D-Printed Shape Memory Materials

Amelia Yilin Lee, Jia An, Chee Kai Chua

Journal Article

Development of Bioimplants with 2D, 3D, and 4D Additive Manufacturing Materials

Guo Liu, Yunhu He, Pengchao Liu, Zhou Chen, Xuliang Chen, Lei Wan, Ying Li, Jian Lu

Journal Article

Identifying stakeholders’ roles and relevant project documents for 4D-based collaborative decision making

Veronika BOLSHAKOVA, Annie GUERRIERO, Gilles HALIN

Journal Article

Semantics for linking data from 4D BIM to digital collaborative support

Calin BOJE, Veronika BOLSHAKOVA, Annie GUERRIERO, Sylvain KUBICKI, Gilles HALIN

Journal Article

Lv Jian: Recent Development of Additive Manufacturing of Nanomaterials and 4D Printing Structures（2019

吕坚(院士)

20 Jan 2021

Conference Videos

Research and Development of CAD/CAPP/CAM Integrated System

Wei Erwei,Liang Muyang,Yang Ping

Journal Article

A Theoretical Summary and Mathematics Expression on the Regulation of Life in Meridian (Jing-Iuo) Science

Zhang Renxiang,Zhang Renji

Journal Article

CNC programming system for complex components based on KBE within integrated environment of CAD/CAPP/

Shengwen ZHANG, Guicheng WANG, Liang ZHANG, Xifeng FANG

Journal Article

A Novel Attribute-Based Encryption Approach with Integrity Verification for CAD Assembly Models

Yueting Yang, Fazhi He, Soonhung Han, Yaqian Liang, Yuan Cheng

Journal Article

Optimal localization of complex surfaces in CAD-based inspection

XU Jinting, LIU Weijun, SUN Yuwen

Journal Article

Study of Conceptual Design of Extension for Mechanical Products

Zhao Yanwei

Journal Article

Selecting and prioritizing key factors for CAD/CAM software in small- and medium-sized enterprises using

Ghulam ZAKRIA, Zailin GUAN, Yasser RIAZ, Mirza JAHANZAIB, Anwar KHAN,

Journal Article