• Title/Summary/Keyword: CAD model applications

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A Web-service Environment for a Model Exchange between CAD and CAE with a XML Neutral Format (XML 중립포맷을 이용한 CAD와 CAE간의 모델 교환 웹서비스 환경 구축)

  • Kim J.U.;Lee S.H.;Chun H.J.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.1326-1331
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    • 2005
  • A product is designed through the collaboration among engineers in several fields such as design, analysis, and manufacturing. These series of functions are performed repeatedly during the design process. An easy access and exchange of the model data is one of the important elements that help to shorten production development time. Especially, the importance of data exchange between CAD and CAE applications is increasing in the field of verification and estimation of the products. However, information and knowledge of model which is generated by a CAD software cannot be transferred by a function of CAE software, as an exchange of product data between CAD and CAE applications. It causes a delay in design analysis and eventually discourages a designer's effort in improving his design. Therefore, we need to integrate a commercial CAD and CAE applications effectively and to use the same interface on a product model obtained in a distributed environment. This paper shows how to implement a model exchange between CAD and CAE by a web-service and how to provide a communication environment among engineers.

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An Exchanging System for an Implant Model between CAD and CAE with a XML Neutral Format (XML 중립포맷을 이용한 CAD와 CAE 간의 임플란트 모델 교환 시스템 구축)

  • Kim, Jin-Uk;Chun, Heoung-Jae;Lee, Soo-Hong
    • Journal of the Korean Society for Precision Engineering
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    • v.23 no.12 s.189
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    • pp.95-102
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    • 2006
  • A product is designed through the collaboration among engineers in several fields such as design, analysis, and manufacturing. These series of functions are performed repeatedly during the design process. An easy access and exchange of the model data is one of the important elements that help to shorten production development time. Especially, the importance of data exchange between CAD and CAE applications is increasing in the field of verification and estimation of the products. However, information and knowledge of model which is generated by a CAD software cannot be transferred by a function of CAE software, as an exchange of product data between CAD and CAE applications. It causes a delay in design analysis and eventually discourages a designer's effort in improving his design. Therefore, we need to integrate a commercial CAD and CAE applications effectively and to use the same interface on a product model obtained in a distributed environment. This paper shows how to implement a model exchange between CAD and CAE by a web-service and how to provide a communication environment among engineers.

Modeling Education for Improving CAD Model Applicability for Product Development Process (제품개발을 고려한 캐드모델의 응용성 향상을 위한 모델링교육)

  • Woo, Yoonhwan
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.17 no.3
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    • pp.42-47
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    • 2016
  • The quality of CAD models affects the efficiency of the product development process. However, it seems that CAD modeling education in colleges simply focuses on the creation of CAD models without considering the quality or the applicability of the models. In this paper, we propose educational modeling approaches to help improve the quality and applicability of CAD models. These methods teach students to create models that include a rich set of information, facilitate downstream applications, and are precisely made with the fewest operations. A survey was carried out with students to validate these approaches.

Retrieval of CAD Model Information Using Web Services (웹 서비스를 이용한 CAD 모델 정보의 획득)

  • Kim, Byung-Chul;Han, Soon-Hung
    • Korean Journal of Computational Design and Engineering
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    • v.12 no.4
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    • pp.233-244
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    • 2007
  • Web Services are a distributed component technology based on XML and Web. The Web Services are used to integrate heterogeneous systems under the distributed environment. In this study, the concept of Web Services for CAD (WSC) is introduced, which aims at interoperation with CAD systems using the Web Services. This paper introduces one part of the WSC which enables remote users or applications to retrieve the geometries and the design history of CAD models using the Web Services. This paper proposes an architecture of the WSC, the data model and the interfaces for retrieving CAD model information, and the way to apply the WSC to commercial CAD systems.

Air-Gap Type TFBAR Ladder Filters for Wireless Applications

  • Kim, Kun-Wook;Goo, Myeong-Gweon;Yook, Jong-Gwan;Park, Han-Kyu
    • Journal of electromagnetic engineering and science
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    • v.2 no.1
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    • pp.34-38
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    • 2002
  • TFBAR filters for wireless applications are simulated and fabricated. A CAD model is used to analize the air-gap type single resonator and MBVD model is used far filter design. Aluminum nitride is used as the piezoelectric material with platinum electrodes. To verier the CAD model, simulated and measured results are compared far various top electrode thicknesses, and the agreement is within 0.5 % for the parallel resonance frequency. Various types of the ladder type band pass filters are predicted and their responses are compared with measured frequency data.

A Macro Parametric Data Representation far CAD Model Exchange using XML (CAD 모델 교환을 위한 매크로 파라메트릭 정보의 XML 표현)

  • 양정삼;한순흥;김병철;박찬국
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.27 no.12
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    • pp.2061-2071
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    • 2003
  • The macro-parametric approach, which is a method of CAD model exchange, has recently been proposed. CAD models can be exchanged in the form of a macro file, which is a sequence of modeling commands. As an event-driven commands set, the standard macro file can transfer design intents such as parameters, features and constraints. Moreover it is suitable for the network environment because the standard macro commands are open, explicit, and the data size is small. This paper introduces the concept of the macro-parametric method and proposes its representation using XML technology. Representing the macro-parametric data using XML allows managing vast amount of dynamic contents, Web-enabled distributed applications, and inherent characteristic of structure and validation.

Development of a Design Information Sharing System Using Network and STEP (네트워크와 STEP 표준을 이용한 설계 정보 공유 시스템의 개발)

  • Cho, Sung-Wook;Choi, Young;Kwon, Ki-Eok;Park, Myung-Jin;Yang, Sang-Wook
    • Journal of the Korean Society for Precision Engineering
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    • v.15 no.9
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    • pp.82-92
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    • 1998
  • An international standard for the product model data, STEP, and a standard for the distributed object technology, CORBA, will play a very important role in the future manufacturing environment. These two technologies provide background for the sharing of product data and the integration of applications on the network. This paper describes a prototype CAD/CAE environment that is integrated on the network by STEP and CORBA. Several application servers and client software were developed to verify the proposed concept. The present CAD/CAE environments are composed of several individual software components which are not tightly integrated. They also do not utilize the rapidly expanding network and object technologies for the collaboration in the product design process. In the design process in a large organization, sharing of application resources, design data and analysis data through the network will greatly enhance the productivity. The integration between applications can be supported by two key technologies, CORBA(Common Object Request Broker Architecture) and STEP(Standard for the Exchange of Product Model Bata). The CORBA provides interoperability between applications on different machines in heterogeneous distributed environments and seamlessly interconnects distributed object systems. Moreover, if all the data in the CAD/CAE environment are based on the STEP, then we can exclude all the data conversion problems between the application systems.

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Sharing CAD Models Based on Feature Ontology of Commands History

  • Seo, Tae-Sul;Lee, Yoon-Sook;Cheon, Sang-Uk;Han, Soon-Hung;Patil, Lalit;Dutta, Debasish
    • International Journal of CAD/CAM
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    • v.5 no.1
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    • pp.39-47
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    • 2005
  • Different CAx systems are being utilized throughout the product lifecycle due to the practical reasons in the supply chain and design processes. One of the major problems facing enterprises of today is how to share and exchange data among heterogeneous applications. Since different software applications use different terminologies, it is difficult to share and exchange the product data with internal and external partners. This paper presents a method to enhance the CAD model interoperability based on feature ontology. The feature ontology has been constructed based on the feature definition of modeling commands of CAD systems. A method for integration of semantic data has been proposed, implemented, and tested with two commercial CAD systems.

AP224 based Feature Translation from 3D CAD through STEP Part111 (3차원 CAD에서 STEP Part111을 통한 AP224 특징형상 데이터 번역)

  • Kim, J.H.
    • Korean Journal of Computational Design and Engineering
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    • v.11 no.4
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    • pp.303-314
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    • 2006
  • The exchange of CAD (Computer Aided Design) models between different CAD systems and to downstream applications such as manufacturing has become very important to modem industry. One serious current issue is that the process cannot automatically import existing 3-D solid models in a variety of commercial CAD formats into the process without manually re-mastering the model in current standard including "SIEP AP(Application Protocol) 203 Edition 1" To fully integrate technical data from the design agency to the shop floor, design intent and validated 3D geometry of feature based parametric CAD model should be brought into the standardized processes. To overcome this limitation, AP203 Edition 2 (Ed.2) and its related STEP parts such as Part55, Part108, Part109, Part111 and Part112 are starting to be available to handle this problem. The features in Part111 are harmonized with the machining features available in AP224. This paper is focused on two mapping technologies: CAD to Part111 mapping and Pat111 to AP224 mapping including case studios and it will provide the guideline about what should be done next in the AP203 Ed.2 to AP224 mapping. The final goal of this project is to integrate technical data from CAD to AP224 based manufacturing information through AP203 Ed.2.

ISAR IMAGING FROM TARGET CAD MODELS

  • Yoo, Ji-Hee;Kwon, Kyung-Il
    • Proceedings of the KSRS Conference
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    • 2005.10a
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    • pp.550-553
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    • 2005
  • To acquire radar target signature, various kinds of target are necessary. Measurement is one of the data acquiring method, but much time and high cost is required to get the target data from the real targets. Even if we can afford that, the targets we can access are very limited. To obtain target signatures avoiding these problems, we build the target CAD (Computer Aided Design) model for the calculation of target signatures. To speed up RCS calculation, we applied adaptive super-sampling and tested quite complex tank CAD model which is 1.4 hundred of thousands facet. We use calculated RCS data for ID range profile and 2D ISAR (Inverse Synthetic Aperture Radar) image formation. We adopted IFFT (Inverse Fast Fourier Transform) algorithm combined with polar formatting algorithm for the ISAR imaging. We could confirm the possibility of the construction of database from the images of CAD models for target classification applications.

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