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1.
In spite of the widespread use of CAD systems for design and CAE systems for analysis, the two processes are not well integrated because CAD and CAE models inherently use different types of geometric models and there currently exists no generic, unified model that allows both design and analysis information to be specified and shared. In this paper, a new approach called the CAD/CAE-integrated approach is proposed and implemented by a feature-based non-manifold modelling system. The system creates and manipulates a single master model containing different types of all of the geometric models required for CAD and CAE. Both a solid model (for CAD) and a non-manifold model (for CAE) are immediately extracted from the master model through a selection process. If a design change is required, the master model is modified by the feature modelling capabilities of the system. As a result, the design and analysis models are modified simultaneously and maintained consistently. This system also supports feature-based multi-resolution and multi-abstraction modelling capabilities providing the CAD model at different levels of detail and the CAE model at various levels of abstraction.  相似文献   

2.
注塑件CAD建模与CAE智能处理的集成化研究   总被引:5,自引:2,他引:5  
CAD/CAE技术的集成化研究是当前的一个研究热点,对于注塑件/模而言,CAD信息向CAE传输中存在信息丢失和少智能问题,而CAE的结果向CAD信息的反馈过程中也存在信息缺乏衔接和少智能化的问题,利用CBR(基于事件的推理)对工艺参数进行智能推理,然后结合推理出的参数值以及CAD中过滤出的信息,输入到CAE进行分析,对CAD中的特征信息与CAE后处理的信息进行合理的匹配,建立对后处理结果的缺陷解释专家系统。重点对工艺参数优选的CBR及后处理的专家解释系统和数据流的流动过程进行了深入的研究,提出CAD/CAE并行环思想,从而方便了注塑件特征造型与CAE智能处理的集成。  相似文献   

3.
An integrated CAD/CAE/CAM system, HSC--1.1, is described in the paper. HSC--1.1integrates surface modeling, mold design, technological simulations and NC machining into a full CAD/CAE/CAM system with data exchange from one module to another. The practice shows that HSC--1.1 is a useful tool for injection molding and can assist engineers in reducing mold cost and improvingmold quality.  相似文献   

4.
5.
This work presents a novel CACD/CAD/CAE integrated framework for design, modeling, and optimization of fiber-reinforced plastic parts, which can greatly enhance the current design practice by realizing partial automation and multi-stage optimization. To support this framework, a new heterogeneous feature model (HFM) has been developed to model the fiber-reinforced objects and to be transferred between engineering modules. To be specific, the CACD (computer-aided conceptual design) module employs the level-set structure and material optimization to produce the initial design with thickness control, and also the initial HFM; the CAD (computer-aided design) module allows manual editing on the HFM to reflect various design intents; then, the injection molding CAE (computer-aided engineering) simulates the manufacturing process, and the response surface method (RSM) is applied to optimize the process parameters of gate location, injection flow rate, mold temperature and melt temperature, to approach the manufactured fiber orientation distribution close to the optimized result produced by the CACD module; besides, the structural analysis CAE module generates the mechanical performance result to support the CACD module, as well as to validate the final design. By applying this framework, the final structural design including the fiber orientation distribution, will perform better in mechanical properties, and consume less matrix and fiber materials; besides, the design maturity can be approached in shorter time. To prove the effectiveness, a plastic gripper design will be comprehensively studied.  相似文献   

6.
齐飞 《微型电脑应用》2020,(4):112-114,123
研究了基于CAD技术的注塑模具设计流程,并对模具的工艺参数进行了分析和优化,具体采用CAD注塑模集成系统实现。完成了最优工艺参数方案的确定,通过UG的CAE分析模块的应用并以模拟结果为依据完成了对注塑件应力应变分布情况的分析,应力最大值及位置通过实验对比完成确定,为模具结构的优化方案提供参考。最佳注塑制品工艺参数通过分析相关工艺参数获取,并以音箱零件为例,对注塑模具型腔设计方法进行了探讨。  相似文献   

7.
Composable Models for Simulation-Based Design   总被引:8,自引:0,他引:8  
  相似文献   

8.
Currently, there are still some big gaps between the CAD system and CAE system, e.g. the different data structure for model representation, which costs lots of time and effort of engineers in the interaction between these two kinds of systems. In order to bridge these gaps, an incorporate software framework is proposed in this paper. In this framework, the unified representation architecture (URA) is presented that makes CAD and CAE to be an organic entity. The URA contains three components: (1) unified data model (UDD) including unified B-rep, unified feature and unified mesh; (2) unified data management (UDM) consisting of unified interaction, unified data structure, unified Constructive Solid Geometry (CSG) history and unified interface; (3) unified display and post-processor (UDP) for both design and performance analysis. The URA facilitates the incorporation by explicitly representing design and analysis information as design features, which maintains their associations through the history chain. Besides the URA, a unified mesh data (UMD) is proposed to unify the mesh of CAD model display and CAE analysis with the purpose of reducing the redundancy of mesh data. The unified mesh data (UMD) is proposed to unify the mesh of CAD model display and CAE analysis, which greatly reduces the redundancy of mesh generation data. Finally, the high efficiency of the proposed framework is demonstrated by engineering examples.  相似文献   

9.
CAD与CAE集成过程的分析与建模   总被引:1,自引:0,他引:1  
文章较详细地分析了CAD产品设计与CAE产品工程分析的集成过程,用 IDEF0对该 CAD设计和CAE工程分析的集成过程进行了建模,所建立的IDEF0模型是建立 CAD、CAE集成信息模型的基础。  相似文献   

10.
Numerical simulation of injection molding have had success in predicting the behavior of polymer melt in extremely complicated geometries. Most of the current numerical solutions are based on finite-element/finite-difference/boundary-element/volume-control methods and the surface model. This paper discusses the development of an integrated CAE system for injection molding in detail, and presents the mathematics for numerical simulation of filling, packing, cooling, stress and warpage in injection molding. The developed system named as HsCAE3D is introduced at the end.  相似文献   

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