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TECHNOLOGY AND APPLICATION OF PRODUCT EVOLUTIONARY DESIGN BASED ON CONFIGURATION IN MASS CUSTOMIZATION MODE

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Chinese Journal of Mechanical Engineering 2007年第3期20卷 113-119页

作者： feng yixiong CHENG Jin tan jianrong ZHENG Bing wei Zhe State Key Laboratory of CAD＆CG Zhejiang University Hangzhou 310027 China College of Economics ＆ Management Dalian University Dalian 116622 China

Product customization has been recognized as an effective means to implement mass cus-tomization （MC）. A new theory and method for MC-oriented evolutionary design of configuration product is presented based on the study of developing law of evolutionary design in integrated envi-ronment, which focuses on the innovation and reuse properties of configuration product. The key technologies for general requirement modeling in quick response to customer requirement, multi-level stepwise configuration optimization driven by customer requirement and evolutionary deduction of product variable structure based on configuration association are thoroughly investigated. The suc-cessful application of the presented method in the development of real-life products demonstrates its utility, flexibility and robusticity.

关键词： Mass customization Evolutionary design Configuration product Configuration unit

Product Modular Design Incorporating Preventive Maintenance Issues

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Chinese Journal of Mechanical Engineering 2016年第2期29卷 406-420页

作者： GAO Yicong feng yixiong tan jianrong State Key Laboratory of Fluid Power Transmission and Control Zhejiang University

Traditional modular design methods lead to product maintenance problems, because the module form of a system is created according to either the function requirements or the manufacturing considerations. For solving these problems, a new modular design method is proposed with the considerations of not only the traditional function related attributes, but also the maintenance related ones. First, modularity parameters and modularity scenarios for product modularity are defined. Then the reliability and economic assessment models of product modularity strategies are formulated with the introduction of the effective working age of modules. A mathematical model used to evaluate the difference among the modules of the product so that the optimal module of the product can be established. After that, a multi-objective optimization problem based on metrics for preventive maintenance interval different degrees and preventive maintenance economics is formulated for modular optimization. Multi-objective GA is utilized to rapidly approximate the Pareto set of optimal modularity strategy trade-offs between preventive maintenance cost and preventive maintenance interval difference degree. Finally, a coordinate CNC boring machine is adopted to depict the process of product modularity. In addition, two factorial design experiments based on the modularity parameters are constructed and analyzed. These experiments investigate the impacts of these parameters on the optimal modularity strategies and the structure of module. The research proposes a new modular design method, which may help to improve the maintainability of product in modular design.

关键词： modular design modularity strategy preventive maintenance optimization design

Multi-Objective Optimization of VBHF in Deep Drawing Based on the Improved QO-Jaya Algorithm

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Chinese Journal of Mechanical Engineering 2024年第1期37卷 189-202页

作者： Xiangyu Jiang Zhaoxi Hong yixiong feng jianrong tan State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China Key Laboratory of Advanced Manufacturing Technology of Zhejiang Province Zhejiang UniversityHangzhou 310027China Ningbo Innovation Center Zhejiang UniversityNingbo 315100China

Blank holder force(BHF)is a crucial parameter in deep drawing,having close relation with the forming quality of sheet ***,there are different BHFs maintaining the best forming effect in different stages of deep *** variable blank holder force(VBHF)varying with the drawing stage can overcome this problem at an *** optimization of VBHF is to determine the optimal BHF in every deep drawing *** this paper,a new heuristic optimization algorithm named Jaya is introduced to solve the optimization *** improved“Quasi-oppositional”strategy is added to Jaya algorithm for improving population ***,an innovated stop criterion is added for better ***,the quality evaluation criteria for wrinkling and tearing are ***,the Kriging models are developed to approximate and quantify the relation between VBHF and forming defects under random ***,the optimization models are established and solved by the improved QO-Jaya algorithm.A VBHF optimization example of component with complicated shape and thin wall is studied to prove the effectiveness of the improved Jaya *** optimization results are compared with that obtained by other algorithms based on the TOPSIS method.

关键词： Variable blank holder force Multi-objective optimization QO-Jaya algorithm Algorithm stop criterion

SELF-ORGANIZED SEMANTIC FEATURE EVOLUTION FOR AXIOMATIC DESIGN

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Chinese Journal of Mechanical Engineering 2008年第2期21卷 108-113页

作者： HAO He feng yixiong tan jianrong XUE Yang State Key Laboratory of CAD ＆ CG Zhejiang University Hangzhou 310027 China

Aiming at the problem existing in the computer aided design process that how to express the design intents with high-level engineering terminologies, a mechanical product self-organized semantic feature evolution technology for axiomatic design is proposed, so that the constraint relations between mechanical parts could be expressed in a semantic form which is more suitable for designers. By describing the evolution rules for semantic constraint information, the abstract expression of design semantics in mechanical product evolution process is realized and the constraint relations between parts are mapped to the geometric level from the semantic level; With semantic feature relation graph, the abstract semantic description, the semantic relative structure and the semantic constraint information are linked together; And the methods of semantic feature self-organized evolution are classified. Finally, combining a design example of domestic high-speed elevator, how to apply the theory to practical product development is illustrated and this method and its validity is described and verified. According to the study results, the designers are able to represent the design intents at an advanced semantic level in a more intuitional and natural way and the automation, recursion and visualization for mechanical product axiomatic design are also realized.

关键词： Axiomatic design Semantic feature Design intent Self-organized

Layout design and application of 4D-printing bio-inspired structures with programmable actuators

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Bio-Design and Manufacturing 2022年第1期5卷 189-200页

作者： Siyuan Zeng yixiong feng Yicong Gao Hao Zheng jianrong tan State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China Hangzhou Innovation Institute Beihang UniversityHangzhou 310000China

Four-dimensional(4D)printing is an advanced form of three-dimensional(3D)printing with controllable and programmable shape transformation over *** are used as a controlling factor with multi-stage shape recovery,with emerging opportunities to customize the mechanical properties of bio-inspired *** print pattern of shape memory polymer(SMP)fbers strongly afects the achievable resolution,and consequently infuences several other physical and mechanical properties of fabricated ***,the deformations of bio-inspired structures due to actuator layout are more complex because of the presence of the coupling of multi-directional *** this study,the initial structure was designed from closed-shell behavior and divided into a general unit and actuator unit,the latter responsible for driving the *** stress confrontation between the actuator and the general unit was considered in the layout thermodynamic model,in order to eliminate the transformation produced by the uncontrolled shape memory behavior of the general *** critical and efective strategies for the layout design of actuators were proposed and then applied to achieve the desired accurate deformation of 3D-printed bilayer ***,the proposed approach was validated and adopted for fabricating a complex shell-like gripper structure.

关键词： Bio-inspired structure Layout design Programmable actuators Bilayer structure 4D printing

Model evolvement and reuse technology of injection molding machine based on performance knowledge

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High Technology Letters 2008年第2期14卷 205-209页

作者：魏喆 feng yixiong tan jianrong Wang Jinlong State key laboratory of CAD＆CG Zhejiang University Hangzhou 310027 P. R.China School of Computer Engineering Qingdao Technological University Qingdao 266033 P.R. ChinaI

To illuminate the necessity of model evolvement and reuse, dynamics of injection molding machine＇s product models are analyzed. The performance knowledge is used to support the model evolvement and reuse. The driven factors of mechanical product model are concluded. The dynamic characteristics of reuse. Finally, HT1800X1N series injection molding machines are taken as examples to illuminate that the arithmetic is correct and practical.

关键词： performance knowledge model evolvement knowledge reuse injection molding machine

Construction of Human Digital Twin Model Based on Multimodal Data and Its Application in Locomotion Mode Identifcation

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Chinese Journal of Mechanical Engineering 2023年第5期36卷 7-19页

作者： Ruirui Zhong Bingtao Hu yixiong feng Hao Zheng Zhaoxi Hong Shanhe Lou jianrong tan State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China Engineering Research Center for Design Engineering and Digital Twin of Zhejiang Province Hangzhou 310027China Hangzhou Innovation Institute Beihang UniversityHangzhou 310052China School of Mechanical and Aerospace Engineering Nanyang Technological UniversitySingapore 637460Singapore

With the increasing attention to the state and role of people in intelligent manufacturing, there is a strong demand for human-cyber-physical systems (HCPS) that focus on human-robot interaction. The existing intelligent manufacturing system cannot satisfy efcient human-robot collaborative work. However, unlike machines equipped with sensors, human characteristic information is difcult to be perceived and digitized instantly. In view of the high complexity and uncertainty of the human body, this paper proposes a framework for building a human digital twin (HDT) model based on multimodal data and expounds on the key technologies. Data acquisition system is built to dynamically acquire and update the body state data and physiological data of the human body and realize the digital expression of multi-source heterogeneous human body information. A bidirectional long short-term memory and convolutional neural network (BiLSTM-CNN) based network is devised to fuse multimodal human data and extract the spatiotemporal features, and the human locomotion mode identifcation is taken as an application case. A series of optimization experiments are carried out to improve the performance of the proposed BiLSTM-CNN-based network model. The proposed model is compared with traditional locomotion mode identifcation models. The experimental results proved the superiority of the HDT framework for human locomotion mode identifcation.

关键词： Human digital twin Human-cyber-physical system Bidirectional long short-term memory Convolutional neural network Multimodal data

Complicated deformation simulating on temperature-driven 4D printed bilayer structures based on reduced bilayer plate model

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Applied Mathematics and Mechanics(English Edition) 2021年第11期42卷 1619-1632页

作者： Junjie SONG yixiong feng Yong WANG Siyuan ZENG Zhaoxi HONG Hao QIU jianrong tan State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang UniversityHangzhou 310027China Engineering Research Center for Design Engineering and Digital Twin of Zhejiang Province Zhejiang UniversityHangzhou 310027China

The four-dimensional(4D) printing technology, as a combination of additive manufacturing and smart materials, has attracted increasing research interest in recent years. The bilayer structures printed with smart materials using this technology can realize complicated deformation under some special stimuli due to the material *** deformation prediction of bilayer structures can make the design process more rapid and thus is of great importance. However, the previous works on deformation prediction of bilayer structures rarely study the complicated deformations or the influence of the printing process on deformation. Thus, this paper proposes a new method to predict the complicated deformations of temperature-sensitive 4D printed bilayer structures,in particular to the bilayer structures based on temperature-driven shape-memory polymers(SMPs) and fabricated using the fused deposition modeling(FDM) technology. The programming process to the material during printing is revealed and considered in the simulation model. Simulation results are compared with experiments to verify the validity of the method. The advantages of this method are stable convergence and high efficiency,as the three-dimensional(3D) problem is converted to a two-dimensional(2D) *** simulation parameters in the model can be further associated with the printing parameters, which shows good application prospect in 4D printed bilayer structure design.

关键词： reduced bilayer plate model four-dimensional(4D)printing temperature-driven shape-memory polymer(SMP) bilayer structure complicated deformation simulating

基于SPEA2+的产品族模块单元多目标规划方法

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机械工程学报 2009年第12期45卷 143-150页

作者：魏巍谭建荣冯毅雄程锦浙江大学CAD&CG国家重点实验室杭州310027

在分析零件功能和物理特性的基础上,应用模糊数学理论给出产品族模块单元规划准则的量化计算方法,建立产品族模块单元多目标规划优化模型。针对传统的目标加权法在模型求解中的不足,采用改进的强度Pareto进化算法(SPEA2+)对模块单元多... 详细信息

在分析零件功能和物理特性的基础上,应用模糊数学理论给出产品族模块单元规划准则的量化计算方法,建立产品族模块单元多目标规划优化模型。针对传统的目标加权法在模型求解中的不足,采用改进的强度Pareto进化算法(SPEA2+)对模块单元多目标规划问题进行优化求解,从而得到一系列基于Pareto解集的产品模块规划方案,并利用模糊集合理论的Pareto综合选优方法得到了产品模块多目标规划的最优方案。结合项目实施以缝纫机为应用实例,验证提出方法的有效性和适应性。

关键词：模块规划耦合度聚合度强度Pareto进化算法多目标优化 Pareto集