Journal articles: 'Parametric CAD'

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Mathur, Aman, Marcus Pirron, and Damien Zufferey. "Interactive Programming for Parametric CAD." Computer Graphics Forum 39, no. 6 (2020): 408–25. http://dx.doi.org/10.1111/cgf.14046.

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Hoffmann, C. M., and K. J. Kim. "Towards valid parametric CAD models." Computer-Aided Design 33, no. 1 (2001): 81–90. http://dx.doi.org/10.1016/s0010-4485(00)00073-7.

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Fudos, Ioannis, and Christoph M. Hoffmann. "Constraint-based parametric conics for CAD." Computer-Aided Design 28, no. 2 (1996): 91–100. http://dx.doi.org/10.1016/0010-4485(95)00037-2.

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Stan, Constantin, Miron Zapciu, Marius Paraschiv, and Mihai Ungureanu. "3D Parametric Modeling for Complex Parts Generation." Applied Mechanics and Materials 371 (August 2013): 504–8. http://dx.doi.org/10.4028/www.scientific.net/amm.371.504.

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The complex parts, like block engine or inside panel door, represent a real challenge for 3D modeling with modern parametric 3D CAD systems if we intend to reuse the modeling for future modifications. The complexity of the part generates a large number of parameters and parametrical dependencies that is difficult to manage and even difficult to change for modifying the part, often, for big changes, making it easier to remodeling the part from the beginning. In this paper is presented a new method of parametric and hierarchical 3D modeling that allows easy future modifications of the part. This paper also presents the implementation of this new method in Catia V5 and the validation for a number of CAD models.

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Mun, Duhwan, Heungki Kim, Kwangsub Jang, Junmyun Cho, Junhwan Kim, and Soonhung Han. "A Method for Automatic Generation of Parametric Computer Aided Design Models in a Mold Base e-Catalog System." Journal of Computing and Information Science in Engineering 6, no. 3 (2006): 308–14. http://dx.doi.org/10.1115/1.2218365.

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Reusing existing design models and utilizing an e-Catalog for components are required for faster product development. For the acceleration, an e-Catalog should provide parametric computer aided design (CAD) models, since parametric information is necessary for configuration design. There are difficulties, however, in building a parametric library of all the necessary combinations using a CAD system, because there are too many component combinations for each product. To overcome this problem, we propose a table parametric method to generate parametric CAD models automatically, and describe its details.

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Ji, Ai Min, Kun Zhu, Ji Cheng Huang, and Yi Pei Dong. "CAD/CAE Integration System of Mechanical Parts." Advanced Materials Research 338 (September 2011): 272–76. http://dx.doi.org/10.4028/www.scientific.net/amr.338.272.

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The key technologies of CAD/CAM integration of mechanical parts which include parametric modeling technology, model transformation of CAD/CAE and finite element modeling were studied. Based on redevelopment of UG, the process of parametric modeling about typical part was achieved. The identification, selection, extraction, and removal of the details in the CAD model were analyzed. The extraction approach of the mid-surface in the dimensional reduction of the CAD model was executed. The CAD/CAE integration system of the design and finite element analysis for mechanical parts was established by the redevelopment of UG and ANSYS with Visual C++, UG/Open and APDL as tools. The parametric design and automatic finite element analysis for mechanical parts were implemented.

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Kang, Julian H., Byeong-Cheol Lho, and Sang-Rung Choi. "Parametric Web-CAD for Box Culvert Design." Computer-Aided Design and Applications 1, no. 1-4 (2004): 147–52. http://dx.doi.org/10.1080/16864360.2004.10738253.

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GAO, Sande, Takuto SAGA, Kazuya OHMINE, Xiaochu TANG, Xue CHENG, and Jing LI. "3312 Research on Parametric 3D-CAD and CNC Trial Manufacturing for Sheet Metals." Proceedings of Design & Systems Conference 2005.15 (2005): 528–29. http://dx.doi.org/10.1299/jsmedsd.2005.15.528.

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Kang, Yuna, and Soonhung Han. "A 3D Parametric CAD System for Smart Devices." Transactions of the Society of CAD/CAM Engineers 19, no. 2 (2014): 191–201. http://dx.doi.org/10.7315/cadcam.2014.191.

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Zhu, Kun, Xu Yin, and Ai Min Ji. "CAD/CAE Integration System of the Excavator Boom." Applied Mechanics and Materials 401-403 (September 2013): 81–84. http://dx.doi.org/10.4028/www.scientific.net/amm.401-403.81.

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According to the existing problems in the design of the excavator working devices boom, the method of integrated design and analysis for the boom was put forward by CAD/CAE integration technology. Firstly, design ideas of database in CAD/CAE integration system was given, so the data of model can be transmitted and exchanged effectively between CAD and CAE systems. Secondly, the parametric model of the boom was established based on parametric method. Thirdly, the customization analysis platform of the boom is built with customization technology and secondary development of ANSYS Workbench code. Finally, the parametric design and automatic finite element analysis for the excavator boom were implemented.

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Gürgen, Mert, Cenk Eryılmaz, and Vasfi Emre Ömürlü. "PARAMETRIC DESIGN OF DELTA ROBOT." CBU International Conference Proceedings 4 (September 26, 2016): 803–6. http://dx.doi.org/10.12955/cbup.v4.856.

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This article describes a sophisticated determination and presentation of a workspace volume for a delta robot, with consideration of its kinematic behavior. With the help of theoretical equations, optimization is performed with the aid of the stiffness and dexterity analysis. Theoretical substructure is coded in Matlab and three-dimensional (3D) data for delta robot are developed in computer-aided design (CAD) environment. In later stages of the project, both 3D and theoretical data are linked together and thus, with the changing design parameter of the robot itself, the Solidworks CAD output adapts and regenerates output with a new set of parameters. To achieve an optimum workspace volume with predefined parameters, a different set of robot parameters are iterated through design optimization in Matlab, and the delta robot design is finalized and illustrated in the 3D CAD environment, Solidworks. This study provides a technical solution to accomplish a generic delta robot with optimized workspace volume.

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Song, Mei Yu. "The CAD Research of Vehicle Steering System." Advanced Materials Research 816-817 (September 2013): 1019–23. http://dx.doi.org/10.4028/www.scientific.net/amr.816-817.1019.

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Currently, the 3D design has become the inevitable trend in the application of CAD technology. It is possible for 3D design of vehicle bogie. In this paper, the 3D parametric CAD system of vehicle bogie based on the performance is established with the combination of the section size calculation, the parametric CAD design, and the database access technology, which is redeveloped and reassembled with the platform of SolidWorks 2008. Therefore, this study has certain theoretical research and practical application value.

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Zhang, Ying Jie, and Gui Hong Jia. "Development of Mechanical CAD System Based on ARX." Applied Mechanics and Materials 71-78 (July 2011): 3996–99. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.3996.

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In AutoCAD2008 development platform, taking MFC and ARX as development, integrating MFC ODBC to develop database, combining with parametric drawing techniques, it establishes the basic framework of mechanical CAD system. And taking gears parametric drawing as an example, the key technology of CAD system is illustrated, which improves the design efficiency and shortens the development cycle.

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Zeng, Yi Shan, and Jun Qian. "Research on Case-Based Reasoning Parametric CAD Design System for Small Hydraulic Press." Applied Mechanics and Materials 37-38 (November 2010): 990–93. http://dx.doi.org/10.4028/www.scientific.net/amm.37-38.990.

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In order to satisfy the needs of small hydraulic press enterprises, a case-based reasoning design method is proposed, which introduces the techniques of parametric design, finite element analysis and optimization. The parametric CAD design system for small hydraulic press is developed based on SolidWorks by using VC++. And this system is composed of parametric design, database, finite element analysis and optimization. Customers’ feedbacks show that the parametric CAD design system has greatly enhanced the efficiency of the design.

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Niu, Wen Tie, Peng Fei Wang, Yu Shen, Wei Guo Gao, and Li Na Wang. "A Feature-Based CAD-CAE Integrated Approach of Machine Tool and its Implementation." Advanced Materials Research 201-203 (February 2011): 54–58. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.54.

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An analysis feature-based CAD-CAE integrated approach was proposed to solve the problems of rapidly CAE modeling for static and dynamic analysis process of machine tool. Firstly, analysis features were defined in CAD system and analysis feature library was constructed for machine tool and its structural components. Secondly, analysis feature model was constructed by attaching analysis feature to CAD model interactively. Finally, ANSYS parametric design language (APDL) file was generated automatically by mapping analysis features to APDL codes, which realized the integration of CAD system and ANSYS system. Based on application programming interface (API) of SolidWorks, a parametric CAD-CAE tool oriented to static and dynamic analysis of machine tool was developed, which realized parametric modeling and automatic analysis of machine tool and improved design efficiency and quality of machine tool.

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Agarwal, Dheeraj, Simão Marques, and Trevor T. Robinson. "Aerodynamic Shape Optimisation Using Parametric CAD and Discrete Adjoint." Aerospace 9, no. 12 (2022): 743. http://dx.doi.org/10.3390/aerospace9120743.

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This paper presents an optimisation framework based on an open-source CAD system and CFD solver. In this work, the high-fidelity flow solutions and surface sensitivities are obtained using the primal and discrete adjoint formulations of SU2. This paper shows the direct use of CAD models for optimisation by developing a CAD system application programming interface and creating a link between the CAD-MESH-CFD analysis. A methodology to obtain geometric sensitivities is introduced, enabling the calculation of accurate gradients with respect to CAD variables and the deformation of the analysis mesh during the optimisation process. This methodology guarantees that the new surface mesh lies exactly on the CAD geometry. The optimisation framework is applied to a rectangular wing and a three section high-lift aerofoil configuration derived from the NASA CRM-HL configuration. Both geometries are created using FreeCAD. The performance objectives are to decrease the drag while constraining the lift to be above a desired value. The twist distribution of the wing was parameterised within the CAD system, allowing the minimisation of the induced drag by obtaining a nearly elliptical lift distribution. For the high-lift configuration, the position and rotation of the flap and slat were parameterised with respect to the original section; the final optimised positions yield a drag reduction of approximately 16.5%. These results show that the CAD parameterisation can be reliably used to obtain efficient optimums while operating directly on the CAD geometries.

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Hoffmann, Christoph M. "Constraint-Based Computer-Aided Design." Journal of Computing and Information Science in Engineering 5, no. 3 (2005): 182–87. http://dx.doi.org/10.1115/1.1979508.

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Computer-aided design (CAD) systems have become parametric, basing shape design on constraints and design feature operations. We review the development of constraint-based parametric CAD, explaining some of the foundational issues as well as giving an outlook on possible future directions of development.

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Dvořák, Karel. "Management of Parametric CAD Model by External Tools." Applied Mechanics and Materials 390 (August 2013): 616–20. http://dx.doi.org/10.4028/www.scientific.net/amm.390.616.

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One of the possibilities how to increase the efficiency of the deployment of tools for design, simulation and preparing of manufacturing technology is linking engineering applications with external tools, providing data for digital model managing. Strategically correctly designed parametric model can be managed by externally provided information. This paper provides examples of three methods using external data. Presented methods are validated during the use in industrial practice and in the preparation of technical staff at secondary schools, colleges and universities of engineering focus. The main objective of the deployment of presented methods is the acceleration of creation of virtual prototypes digital data of varying complexity while maintaining the accuracy of the corresponding geometric and functional requirements for the final product. At the same time these methods can be used to streamline transfers between different data formats of designer data and to allow interventions into the structure of the model without the use of a particular design engineering applications.

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Wang, Song Hao, Steven Melendez, Chyi Shyan Tsai, and Chi Wei Wu. "Parametric Design and Design Associability in 3D CAD." Materials Science Forum 594 (August 2008): 461–68. http://dx.doi.org/10.4028/www.scientific.net/msf.594.461.

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The purpose of this research is to make design automation possible by parametric design and design associability in 3D CAD. Applications of the technology in liquid food packaging machinery and its advantages are presented in the paper. For regular shapes such as circles or lines, parameters are used to link the dimensions of relative parts while for irregular shapes such as curves, associability is used to do the job in an assembly. Commercial 3D CAD software and Microsoft Excel software were used for the application. It is proved that same merit applies to designs of other machineries, on reducing design time and design mistake, enhancing consistency and easy documentation， therefore liberating designers from redundant day-to-day routine computer-paperwork to make more innovative contributions to their job. The impact of the design-automation technology on machine design is great.

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Brovkina, Yuliya I., and Ekaterina A. Petrakova. "Structural-parametric synthesis of mechanisms in CAD-systems." Journal of Physics: Conference Series 1515 (April 2020): 042014. http://dx.doi.org/10.1088/1742-6596/1515/4/042014.

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Bodein, Yannick, Bertrand Rose, and Emmanuel Caillaud. "Explicit reference modeling methodology in parametric CAD system." Computers in Industry 65, no. 1 (2014): 136–47. http://dx.doi.org/10.1016/j.compind.2013.08.004.

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Zhu, Liangchao, Ming Li, and Ralph R. Martin. "Direct simulation for CAD models undergoing parametric modifications." Computer-Aided Design 78 (September 2016): 3–13. http://dx.doi.org/10.1016/j.cad.2016.05.006.

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Solano, Lluis, and Pere Brunet. "Constructive constraint-based model for parametric CAD systems." Computer-Aided Design 26, no. 8 (1994): 614–21. http://dx.doi.org/10.1016/0010-4485(94)90104-x.

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Larsen, Shane, and C. Greg Jensen. "Converting Topology Optimization Results into Parametric CAD Models." Computer-Aided Design and Applications 6, no. 3 (2009): 407–18. http://dx.doi.org/10.3722/cadaps.2009.407-418.

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Goldbach, A., and K. U. Bletzinger. "CAD-integrated Parametric Design Cycle for Structural Membranes." Journal of the International Association for Shell and Spatial Structures 60, no. 4 (2019): 266–72. http://dx.doi.org/10.20898/j.iass.2019.202.024.

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The design cycle of membrane structures consists of three interactive and highly non-linear disciplines. Formfinding is performed in order to find a geometry that allows the prestressed structure to carry loads through tension only. Once a formfound geometry is set, structural analysis needs to assess the structure's safety and usability. The most challenging step is the cutting pattern generation, which aims at finding the planar pieces which can be elevated to build spatial membrane structures with a minimum deviation from the desired shape and prestress state.<br/> Isogeometric B-Rep Analysis (IBRA) allows the designer to perform analyses on the original CAD model without leaving the CAD environment. High quality is ensured for the geometry and the mechanical approximation by using Non-Uniform Rational B-Splines (NURBS). Additionally, the topology information of multipatches can be transferred to the analysis in order to enrich the design space. Trimmed and coupled surfaces can thus be included in the analysis. Parametric models allow the designer to examine a large variety of geometrical and mechanical entities with one model.<br/> The advantages of the CAD-integration with IBRA for the highly interactive design of structural membranes are shown in this contribution.

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Robinson, Trevor T., Cecil G. Armstrong, and Hung Soon Chua. "Determining the parametric effectiveness of a CAD model." Engineering with Computers 29, no. 1 (2012): 111–26. http://dx.doi.org/10.1007/s00366-011-0248-4.

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Xia, Chang Gao, Jian Kuan Su, and Mao Hui Pan. "Study on Crankshaft Design Based on CAD/CAE." Advanced Materials Research 201-203 (February 2011): 830–35. http://dx.doi.org/10.4028/www.scientific.net/amr.201-203.830.

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This paper presents an integrated method, which is based on the CAD/CAE, for engine crankshaft design. A parametric modeling system of engine crankshaft is established with the CATIA secondary development tools. Taking advantage of the finite element analysis procedure of engine crankshaft strength which is programmed with ANSYS APDL programming language, the parametric loading, automatic solution and result analysis of the crankshaft strength can be realized. Integrating the parametric modeling system of engine crankshaft and the special finite element analysis procedure of the engine crankshaft strength, the three-dimensional digital model of the crankshaft can be generated rapidly. By changing the structure dimension, the crankshaft series design is achieved and the design and analysis can be improved. Therefore, it is helpful to improve the design quality and efficiency of crankshaft and shorten the design cycle.

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Lu, Ming. "The Application of CAD Secondary Development in 3D Parametric Graphic Design." Applied Mechanics and Materials 224 (November 2012): 239–42. http://dx.doi.org/10.4028/www.scientific.net/amm.224.239.

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This paper introduces the principle of applying the embedded development tool Visual LISP in three-dimensional parametric graphic design in AutoCAD environment. With the parametric design of 3D straight-toothed spur gear as example, an elaborate description of the process and method of 3D parametric graphic design based on Visual LISP is presented.

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Yin, Shi Jun, Meng Qiu Sun, Xiang Li, et al. "Research and Application of Parametric Design in Traditional Plug-Flow Aeration Tank with Drawing Methods." Advanced Materials Research 1014 (July 2014): 86–89. http://dx.doi.org/10.4028/www.scientific.net/amr.1014.86.

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By using the technology of CAD drawing and standard design calculation is very necessary and feasible. Designers can use the technology of parametric drawing, carries on two times of CAD development of the use of VBA language, the water processing graphics processing and engineering graphics rendering and completed in the computer, realize the parametric design of water treatment structures. Users only need to input the basic parameters that can be completed treatment structure graphics and rendering in CAD, reduce the processing procedure and time complexity. Based on the traditional plug flow aeration tank as an example, introduces the parametric design of traditional plug flow aeration tank by VBA.

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Xiang, Meng Qun, Si Yuan Cheng, Xue Rong Yang, Hui Juan Peng, and Xiang Wei Zhang. "A Design Methodology for Reverse Engineering Integrated with Anatomical CAD." Applied Mechanics and Materials 248 (December 2012): 79–84. http://dx.doi.org/10.4028/www.scientific.net/amm.248.79.

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In the conventional Reverse Engineering (RE), the first step is modeling industrial components from point cloud to parametric CAD model, and then the necessary design will be operated in a parametric CAD environment. Therefore the reverse engineering process is very time-consuming and error-prone. The Anatomical CAD means allowing the common Computer Aided Design operations on 3D anatomical data. 3-matic is a software package which equipped with an Anatomical Reverse Engineering module, with this module we can do the design operations on anatomical data. In this paper, we propose a new design methodology integrated with Anatomical CAD, which we can eliminate the first step of reverse engineering of the scanned data to a CAD format, save the time and work more accurately.

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Ding, Hua, Zhao Jian Yang, Xue Wen Wang, and Zhi Yong Ding. "The Study of CAD/CAE Integrated Technology in Network Environment." Advanced Materials Research 145 (October 2010): 567–72. http://dx.doi.org/10.4028/www.scientific.net/amr.145.567.

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Based on the concept of parametric design, this paper realizes the parametric modeling and parametric finite element analysis by utilizing UG/OPEN secondary development tool and APDL module of ANSYS software respectively. This paper also achieves data sharing of CAD/CAE through compiling interface program between UG6.0 and ANSYS10.0. In addition, the remote design and analysis platform has been built by using ASP.NET technology, component technology, and database technology. We take piston-piston rod part of coal mining machine’s cutting unit as an example to verify the system. Meanwhile, it proves system can effectively shorten design and analysis cycle time, and reduce workload of designer. Therefore, this software has potential application value in engineering.

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Agarwal, Dheeraj, Kapellos Christos, Trevor Robinson, and Cecil Armstrong. "Using Parametric Effectiveness for Efficient CAD-Based Adjoint Optimization." Computer-Aided Design and Applications 16, no. 4 (2018): 703–19. http://dx.doi.org/10.14733/cadaps.2019.703-719.

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Pratt, Michael J. "Exchanging history-based parametric CAD models using ISO 10303." International Journal of Product Lifecycle Management 4, no. 4 (2010): 312. http://dx.doi.org/10.1504/ijplm.2010.036483.

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Staves, Daniel R., John L. Salmon, and Walter E. Red. "Associative CAD references in the neutral parametric canonical form." Computer-Aided Design and Applications 14, no. 4 (2016): 408–21. http://dx.doi.org/10.1080/16864360.2016.1257184.

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Khan, Md Tarique Hasan, Frédéric Demoly, and Kyoung-Yun Kim. "Formal ontology and CAD integration with macro parametric approach." Computer-Aided Design and Applications 14, sup1 (2017): 24–32. http://dx.doi.org/10.1080/16864360.2017.1308078.

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Gujarathi, G. P., and Y. S. Ma. "Parametric CAD/CAE integration using a common data model." Journal of Manufacturing Systems 30, no. 3 (2011): 118–32. http://dx.doi.org/10.1016/j.jmsy.2011.01.002.

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Wang, Song-Hao, Steven Melendez, and Chyi-Shyan Tsai. "Application of Parametric Sketching and Associability in 3D CAD." Computer-Aided Design and Applications 5, no. 6 (2008): 822–30. http://dx.doi.org/10.3722/cadaps.2008.822-830.

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Pratt, Michael J. "Extension of the STEP Standard for Parametric CAD Models." Journal of Computing and Information Science in Engineering 1, no. 3 (2001): 269–75. http://dx.doi.org/10.1115/1.1419196.

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The first Technical Note in this series [1] introduced the international standard ISO 10303, informally known as STEP, and the second [2] dealt with some practical aspects of using the standard for the exchange of CAD models. It was noted in [1] that the current published parts of the standard are restricted to the representation and exchange of non-parameterized models. The present contribution discusses the implications of that restriction and describes the progress of the ISO TC184/SC4 committee towards its removal. As will be shown, this extension of the STEP standard will lead to considerable benefits for industry.

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Wang, Qing-Hui, Jing-Rong Li, Bao-Li Wu, and Xiao-Ming Zhang. "Live parametric design modifications in CAD-linked virtual environment." International Journal of Advanced Manufacturing Technology 50, no. 9-12 (2010): 859–69. http://dx.doi.org/10.1007/s00170-010-2575-9.

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Zhou, Hui Lan. "Development of Parametric CAD System Based on Pro / Toolkit and Database Technology." Applied Mechanics and Materials 55-57 (May 2011): 2235–41. http://dx.doi.org/10.4028/www.scientific.net/amm.55-57.2235.

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With Pro/Toolkit of Pro/E and ADO(ActiveX Data Object) database technology, part parametric CAD system is developed and an successful instance is introduced in the paper. In the CAD system, interface between Pro/E and VC++6.0 is created correctly using Pro / Toolkit and user interface for part parametric designing can be achieved by means of dll( dll dynamic link) library built in VC++6.0 .Meanwhile ADO database is applied in the CAD system to manage all part parameters and thus part revising and updating can be realized quickly. The developing method in the CAD system not only is applicable to typical mechanical part designing but also be helpful to establishing standard part library.

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Liu, Wei Dong, and Yuan Sun. "Parametric Representation for Geometry Variation in Digital Mechanical System." Applied Mechanics and Materials 686 (October 2014): 507–12. http://dx.doi.org/10.4028/www.scientific.net/amm.686.507.

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Ideal geometry is mainly represented by several parameters in traditional CAD system. Based on these parameters, ideal geometry can be dynamically constructed to build the entire CAD entity; however, the modeling of variated geometry by parameters is not included, and parametric representation for variated geometry is introduced in this paper; sets of parameters for different types of geometry variation are discussed. Based on parametric representation for variated geometry, the translation and orientation error of part that affected by the variation of geometry is calculated, the process for converting geometry error to parametric part location error is introduced.

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Skala, Vaclav. "Efficient Intersection Computation of the Bezier and Hermite Curves with Axis Aligned Bounding Box." WSEAS TRANSACTIONS ON SYSTEMS 20 (December 21, 2021): 320–23. http://dx.doi.org/10.37394/23202.2021.20.36.

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Cubic parametric curves are used in many applications including the CAD/CAM systems. Especially the Hermite, Bezier and Coons formulations of a cubic parametric curve are used in E2 and E3 space. This paper presents efficient algorithm for the intersection computation of a cubic parametric curve with the Axis Aligned Bounding Box (AAB Box). Usual solution is to represent the cubic curve by a polyline, i.e. actually by sampled points of the given curve. However, this approach is dependent on the sampling frequency and can lead to problems especially in CAD/CAM systems and numerically controlled machines use.

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Kuang, Yu Chun, Qin Wang, Yong Xing Wu, and Yue Hua Hu. "Development on CAD System of Tri-Cone Bits Based on UG." Advanced Materials Research 338 (September 2011): 369–72. http://dx.doi.org/10.4028/www.scientific.net/amr.338.369.

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This paper develops a set of tri-cone bit CAD system based on UG platform relying on using parametric design idea; studies the systematic structure and development principle of the cone bit CAD system; molds the cone, tooth and tooth slot by using the basic theory of parametric design and feature modeling corresponding to the example, and realizes the assembly of cone and tooth and virtual assembly of three cones. This system interface is simple, intuitive, easy to operate, and has good human-computer interaction and scalability and portability. This paper provides a research base for the developing a more perfect tri-cone bit CAD system on UG.

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Li, Jinggao, Byung Chul Kim, and Soonhung Han. "Parametric exchange of round shapes between a mechanical CAD system and a ship CAD system." Computer-Aided Design 44, no. 2 (2012): 154–61. http://dx.doi.org/10.1016/j.cad.2011.08.003.

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Buonamici, Francesco, Monica Carfagni, Rocco Furferi, Lapo Governi, Alessandro Lapini, and Yary Volpe. "Reverse engineering of mechanical parts: A template-based approach." Journal of Computational Design and Engineering 5, no. 2 (2017): 145–59. http://dx.doi.org/10.1016/j.jcde.2017.11.009.

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Abstract Template-Based reverse engineering approaches represent a relatively poorly explored strategy in the field of CAD reconstruction from polygonal models. Inspired by recent works suggesting the possibility/opportunity of exploiting a parametric description (i.e. CAD template) of the object to be reconstructed in order to retrieve a meaningful digital representation, a novel reverse engineering approach for the reconstruction of CAD models starting from 3D mesh data is proposed. The reconstruction process is performed relying on a CAD template, whose feature tree and geometric constraints are defined according to the a priori information on the physical object. The CAD template is fitted upon the mesh data, optimizing its dimensional parameters and positioning/orientation by means of a particle swarm optimization algorithm. As a result, a parametric CAD model that perfectly fulfils the imposed geometric relations is produced and a feature tree, defining an associative modelling history, is available to the reverse engineer. The proposed implementation exploits a cooperation between a CAD software package (Siemens NX) and a numerical software environment (MATLAB). Five reconstruction tests, covering both synthetic and real-scanned mesh data, are presented and discussed in the manuscript; the results are finally compared with models generated by state of the art reverse engineering software and key aspects to be addressed in future work are hinted at. Highlights A novel CAD reconstruction method fitting a CAD template model to mesh data. A feature-based parametric-associative modelling history is retrieved. Fitting process is controlled by a Particle Swarm Optimization algorithm. Accuracy of reconstructed models is comparable/better than state of the art results. Computational costs and required time are at the moment considerable.

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Wang, Sha Na, Fu Yun Liu, Yun Ze Yang, Kun Xu, and Ning Jia. "Research on the Variant Design Method Based on the Integration of CAD/CAE." Applied Mechanics and Materials 224 (November 2012): 248–51. http://dx.doi.org/10.4028/www.scientific.net/amm.224.248.

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Component variant design method based on parametric design technology and parametric CAE technology are discussed. Based on the integration of CAD and CAE, a variant design method with the function to satisfy engineering constraints is put forward. Using VC++ and Jscript as developing tools, CAD system (SolidWorks) and CAE system (ANSYS) are redeveloped and integrated. A variant design method based on the integration of CAD/CAE is realized. A prototype system of the above variant design method is developed. As an example, variant design of workbench of a machine tool is realized. The variant design method and the variant design prototype system are verified.

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Ilie, K., and A. Subic. "Parametric modelling of helical rotors for efficient design of twin-screw superchargers." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 221, no. 2 (2007): 267–72. http://dx.doi.org/10.1243/0954406jmes421ft.

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The parametric three-dimensional geometric model of twin-screw supercharger rotors of any aspect ratio was developed. For model validation through visualization, computer-aided design (CAD) rotor models with scalable data were generated in commercial CAD software and calibrated experimentally by laser Doppler velocimetry (LDV) tests. Calibrated rotor profile data can be transferred into CAD-CFD interface for flow simulation for performance optimization.

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Cheng, Wei, and Zhi Li Cheng. "Applications of CAD in the Modern Garment Industry." Applied Mechanics and Materials 152-154 (January 2012): 1505–8. http://dx.doi.org/10.4028/www.scientific.net/amm.152-154.1505.

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In recent years, the Computer Aided Design (CAD) technology is being utilized in the textile and clothing industry, thus simplifying the overall process and shortening the cycle from design to manufacturing. This greatly improves the manufacturing efficiency and also the garment quality. This paper presents the trend of 3D Garment CAD technology, analyzes the intelligent apparel CAD systems, including parametric design, Combination of artificial intelligence and CAD and the closely relationship between CAD and the Internet.

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Li, Jian Xia, and Jing Jing Huang. "Design and Implementation of the Parametric Designing System Based on ADO." Advanced Materials Research 487 (March 2012): 281–84. http://dx.doi.org/10.4028/www.scientific.net/amr.487.281.

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With the example of the parametric CAD system of the rolling bearing, the parametric design method to the second development of the AutoCAD system based on VB by using extra database is introduced in this paper. This system can visit the extra database by ADO technique, complete the total design of the system, create the system database, realize the parametric design and parametric drawing.

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Wang, Hong Wei, Wen Lei Sun, Li He, and Peng Cheng Li. "The Development of Parametric Part Library Based on WEB." Key Engineering Materials 522 (August 2012): 753–56. http://dx.doi.org/10.4028/www.scientific.net/kem.522.753.

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To meet the need of sharing three-dimension model among different CAD/CAM software users and enterprises, and to realize the functions of parameterizing three-dimension model, managing and expanding the data in system, a system of parametric part library is developed by using the technologies of secondary development for CAD/CAM software, ASP.NET, Database and Web3D comprehensive. This paper gives the way and process of realizing the functions above, and an instance of system is given in the paper.

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Journal articles on the topic 'Parametric CAD'

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