• Title, Summary, Keyword: CAE Analysis

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Visualization of CAE Analysis Results using JT (JT를 이용한 CAE 해석결과 가시화)

  • Lee, Ok-Lyeol;Kim, Jay-Jung
    • Proceedings of the KSME Conference
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    • pp.625-630
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    • 2008
  • In the manufacturing industries, viewing CAE analysis results is frequently required during the product development process for design verification. CAE data which include all related information of an analysis is, however, not efficiently shared among designers because CAE data size is in general large to deal with. In order to increase collaboration among designers this paper introduces the development of a CAE visualization system based on JT format exploiting for a large model visualization with a scene graph-based toolkit. Since CAE analysis results and JT format have different structure we developed a translator to convert the CAE result in binary format to the JT format. To show the effectiveness of JT format in showing the CAE result we also developed a prototype viewer offering basic functions provided by commercial systems. By using JT format we are able not only to reduce the size of analysis results, but to store a series of analysis results with several LOD in a data file.

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Multidisciplinary CAE Management System Using a Lightweight CAE Format (경량 CAE 포맷을 이용한 다분야 CAE 관리 시스템 개발)

  • Park, Byoung-Keon;Kim, Jay-Jung
    • Korean Journal of Computational Design and Engineering
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    • v.15 no.2
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    • pp.157-165
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    • 2010
  • In the manufacturing industries, CAE analysis results are frequently required during the product development process for design verification. CAE data which include all related information of an analysis is, however, not efficiently shared among engineers because CAE data size is in general very large to deal with. At first, we represent a proposed lightweight format which is capable to include all the types of CAE analysis results and to support hierarchical data structure. Since each CAE system has different data structures of its own, a translator which translates to the proposed format is also represented. Unlike the design environment with CAD system, many CAE systems are used in a manufacturing company because many sorts of analysis are performed usually for a product design. Thus, lots of CAE results are generated and occupy huge size within storage, and they make it harder to manage or share many CAE results efficiently. A multi-CAE management system which is able to share many types of CAE data simultaneously using lightweight format is proposed in this paper. Finally, an implementation of the system for this will be introduced.

Development of a CAE Middleware and a Visualization System for Supporting Interoperability of Continuous CAE Analysis Data (연속해석 데이터의 상호운용성을 지원하는 CAE 미들웨어와 가시화 시스템의 개발)

  • Song, In-Ho;Yang, Jeong-Sam;Jo, Hyun-Jei;Choi, Sang-Su
    • Korean Journal of Computational Design and Engineering
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    • v.15 no.2
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    • pp.85-93
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    • 2010
  • This paper proposes a CAE data translation and visualization technique that can verify time-varying continuous analysis simulation in a virtual reality (VR) environment. In previous research, the use of CAE analysis data has been problematic because of the lack of any interactive simulation controls for visualizing continuous simulation data. Moreover, the research on post-processing methods for real-time verification of CAE analysis data has not been sufficient. We therefore propose a scene graph based visualization method and a post-processing method for supporting interoperability of continuous CAE analysis data. These methods can continuously visualize static analysis data independently of any timeline; it can also continuously visualize dynamic analysis data that varies in relation to the timeline. The visualization system for continuous simulation data, which includes a CAE middleware that interfaces with various formats of CAE analysis data as well as functions for visualizing continuous simulation data and operational functions, enables users to verify simulation results with more realistic scenes. We also use the system to do a performance evaluation with regard to the visualization of continuous simulation data.

Development of CAE Data Translation Technique for a Virtual Reality Environment (가상현실 환경을 위한 해석데이터 변환 기술 개발)

  • Song, In-Ho;Yang, Jeong-Sam;Jo, Hyun-Jei;Choi, Sang-Su
    • Korean Journal of Computational Design and Engineering
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    • v.13 no.5
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    • pp.334-341
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    • 2008
  • Computer-aided engineering (CAE) analysis is considered essential for product development because it decreases the simulation time, reduces the prototyping costs, and enhances the reusability of product parts. The reuse of quality-assured CAE data has been continually increasing due to the extension of product lifecycle management; PLM, which is widely used, shortens the product development cycle and improves the product quality. However, less attention has been paid to systematic research on the interoperability of CAE data because of the diversity of CAE data and because the structure of CAE data is more complex than that of CAD data. In this paper, we suggest a CAE data exchange method for the effective sharing of geometric and analysis data. The method relies on heterogeneous CAE systems, a virtual reality system, and our developed CAE middleware for CAE data exchange. We also designed a generic CAE kernel, which is a critical part of the CAE middleware. The kernel offers a way of storing analysis data from various CAE systems, and, with the aid of a script command, enabling the data to be translated for a different system. The reuse of CAE data is enhanced by the fact that the CAE middle-ware can be linked with a virtual reality system or a product data management system.

Connection of PDM System and Web-Based CAE Supporting System for Small and Medium Enterprises (중소기업을 위한 제품정보관리 시스템과 웹기반 CAE 지원 시스템의 연동)

  • Bang, Je-Sung;Lee, Jai-Kyung;Han, Seung-Ho;Park, Seong-Whan;Lee, Tae-Hee
    • Korean Journal of Computational Design and Engineering
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    • v.13 no.6
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    • pp.459-468
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    • 2008
  • A web-based Computer-Aided Engineering (CAE) supporting system is connected with a Product Data Management (PDM) system for Small and Medium Enterprises (SMEs) suffering from the lack of building hardware, software and related experts. An analysis of current business models and worksite requirements provides an improved process model and data to be shared between the PDM system and the CAE supporting system. Since all engineering tasks such as geometric modeling, mesh generation, static stress and modal analysis, and fatigue durability analysis are automated in the CAE supporting system, the user in charge of the CAE have only to configure the concerned values of design variables and result data through the web page. The existing Change Management module of the PDM system is modified for seamless data exchange, i.e. sending the Engineering Change Order (ECO) data to the CAE supporting system and receiving the CAE result data bark. The hi-directional data transfers between the PDM system and the CAE supporting system is made possible by adaptors bused on the Simple Object Access Protocol (SOAP). The current approach will be very helpful for SMEs that only have the PDM system and have no adequate infrastructure for CAE.

Development of Lightweight Molding CAE Data for Efficient Exchange (사출성형 해석 결과 데이터의 효율적 공유를 위한 경량데이터 개발)

  • Park, Ji-Hun;Park, Byoung-Keon;Kim, Jay-Jung
    • Korean Journal of Computational Design and Engineering
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    • v.16 no.5
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    • pp.344-350
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    • 2011
  • In injection molding industries, CAE analyses are generally used to find out problems predicted during the process of manufacturing. The results of CAE analyses consist of much in formation such as meshes and stress, so that the size of data is pretty large. To reduce the size of the data and to make it easy to share, the CAE result to JT translator is proposed in this paper. The translator consists of three modules to translate CAE result to JT format; Extracting module gets ASCII data of product shape and the result values of CAE analysis. Sorting module and mapping module make an element data set and JT file with the data extracted from Extracting module respectively. To the JT files, engineers are able to append product properties and their comments, so that they can share the whole history of the analysis process. In addition, our case study shows that the size of JT format is reduced by almost 90% of its original data format.

A Study on CAE for the Design of the Seat Frame of Fiber-reinforced Composite Material (첨단섬유강화 복합재료 시트프레임 설계를 위한 CAE 연구)

  • 허용정;이순홍;최금호
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • pp.933-937
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    • 1995
  • The design of injection molded prlymeric parts has been done empirically, since it requires profound knowledge about the moldability and causal effects on the properties of the parts. This study shows CAE approach for the design of the seat frame of fiber-reinforced composite material in order to realize the concept os rationsl design for the productivity and quality of mold making. The knowledge-based CAE system is constructed by adding the knowledge-basw module for the design evaluation and appropriate CAE programs for mold design analysis in order to provied designers, at the initial design stage, with comprehensive process knowledge for the performance analysis and the design evaluation. A knowledge-based CAE system is a new tool which enables the concurrent design with integrated and balanced design decisions at the initial design stage of injection molding.

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A New Approach to Robustly Exchange Models in Heterogeneous CAD/CAE Environment and its Application

  • Kim, In-Il;Jang, Young-Heuy;Suh, Heung-Won;Han, Seong-Hwan
    • Journal of Ship and Ocean Technology
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    • v.10 no.2
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    • pp.11-23
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    • 2006
  • The model exchange from CAD system to CAE system in valid and effective manner is the major issue of automatic analysis modelling of ship structure. However, model exchange approaches based on the neutral CAD file have resulted in invalid model exchange that could not properly reflect the characteristics of CAD model and CAE model of ship structure. This paper presents the new approach of n-to-n mapping to exchange ship structure model in heterogeneous CAD/CAE environments. In this study, the common model called 'unified ship model for analysis' to directly extract proper information from different CAD systems for ship structural analysis is proposed. Moreover, a command language based model interfacing technique to construct an idealized model for analysis job is also proposed. The proposed approach has been actually implemented in DSME CAD/CAE environment of ship structure such as TRIBON system, PATRAN system and FLUENT system. The applicability and effectiveness of the proposed approach was verified by applying it to the real analysis project for fore-body of ship and block lifting. This application results show that the proposed approach can be effectively used for heterogeneous CAD/CAE environment.

Integration of CAE Data Management with PLM by using Product Views (제품관점을 이용한 CAE 자료관리와 PLM 통합)

  • Do, Nam-Chul;Yang, Young-Soon
    • Journal of the Computational Structural Engineering Institute of Korea
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    • v.21 no.6
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    • pp.527-533
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    • 2008
  • This paper proposes a product data model and associated process for CAE activities in context of integrated product development. The data model and process enable Product Lifecycle Management(PLM) systems to integrate currently separated CAE activities into the main product development process. The product view concept in the proposed product data model supports independent CAE activities including analysis of various alternatives based on shared product structures with design departments and seamless translation of the CAE result to design product views. The proposed model is validated through an implementation of a prototype PLM system that can integrate and synchronize CAE process with the company-wide product development process.

Development of a PC-based Pre- and Post-processor for Remote CAE (원격 CAE를 위한 PC기반 전.후처리기 개발)

  • Suh, Y.S.;Byun, C.J.;Yoo, S.H.;Lee, J.Y.;Kim, H.
    • Korean Journal of Computational Design and Engineering
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    • v.5 no.2
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    • pp.113-121
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    • 2000
  • A compact pre- and post-processor that runs on PC has been developed for the purpose of remote CAE. This includes a linear-finite-element-analysis module for on-site analysis of simple and midium-sized structural problems and an interfacing module for remote analysis of more complex cases such as nonlinear and large-scale linear problems which are cpu-consuming to solve. The software was designed to provide convenient interfacing capability for the use of client-server-type analysis. In this paper, the interface module was specially designed to use ABAQUS on the supercomputer. As a benchmark for the remote CAE, a sheet-forming simulation was perfomed on a PC networked with the supercomputer.

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