共查询到20条相似文献,搜索用时 187 毫秒
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风道设计是城市客车内饰设计的重要组成部分,对乘客舒适性、整车档次的提高有着重要的作用。通过对现有城市客车铝合金风道设计的调查分析,发现存在有结构设计问题;针对这些问题提出城市客车车内铝合金风道结构设计准则及具体的改进设计措施。 相似文献
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随着互联网技术的发展,工业设计全面进入信息时代,不仅能够按照消费者意愿进行人性化产品的设计和生产,而且能够将生产力的发展和信息技术的进步联系起来。将产品以最直观的形式展现给消费者看。虚拟现实技术作为一门崭新的综合性信息技术,融合了计算机图形学、人工智能、数字图像处理、传感器等相关技术,对于环境进行人为的虚拟,构造成三维空间,编制出逼真的虚拟环境,让用户产生身临其境的感觉。作为一种直观的展示技术,虚拟现实技术在汽车设计的领域中,发挥出虚拟网络展示的功能,特别是在汽车内饰的设计上,成为了当前进行产品造型仿真模拟的重要技术手段。 相似文献
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基于VRML技术虚拟机械设计实验室的研究 总被引:8,自引:0,他引:8
交互性有利于激发学生的学习兴趣和认知主体作用的发挥.虚拟实验室是依赖于计算机网络环境下的实验环境,其设计与应用有助于提高学生的学习兴趣和动手能力.基于虚拟现实构造语言(Virtual Reality Modeling Language,VRML)制作机械设计虚拟实验室具有交互性好、沉浸感强、制作和使用方便、能提高协作性特点.分析了基于VRML制作机械设计虚拟实验室的原因,对如何制作机械设计虚拟实验进行了分析探讨,论述了机械设计虚拟实验室的设计实现过程.利用VRML实现虚拟实验的多媒体教学系统,改变了教学环境的设计,有助于教学创新和提高教学效果. 相似文献
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Qing-Hui Wang Jing-Rong Li Bao-Li Wu Xiao-Ming Zhang 《The International Journal of Advanced Manufacturing Technology》2010,50(9-12):859-869
This paper presents a solution to support parametric design modification in a virtual reality (VR) environment. It builds upon a novel computer-aided design (CAD) and VR integration framework, namely, CAD-linked virtual reality environment. With this framework, semantic information in CAD models, such as constraints, design features, and parametric settings can be automatically extracted during the creation of VR environment and be integrated into the virtual assembly (VA) models. Moreover, the persistent naming mechanism originating from feature-based modeling technology is introduced into the CAD–VR integration, based on which a persistent linkage between VA models and their CAD counterparts can be established. Users are able to visualize design features and to access the associated parametric info in VR environment and also to change the parametric settings online whenever necessary. The modified parametric settings are then sent back to the linked CAD models so that parts can be re-evaluated. The modified CAD part can then be reloaded into the VA model under an automated mechanism. Such communications between CAD and VR applications are supported in a live mode utilizing the COM interfaces provided by CAD server. With this solution, a quick return loop from VR to CAD is achieved. Therefore, it provides the possibility to support quick design change review and “what-if” evaluations for applications such as collaborative system design and immersive project review in VR. This constitutes the major contribution of the work to product development process. 相似文献
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L. Barbieri F. Bruno F. Caruso M. Muzzupappa 《The International Journal of Advanced Manufacturing Technology》2008,38(11-12):1085-1097
The efficacy of virtual reality (VR) as a design support technique is widely recognised by industries. However, the efficiency of the routine employment of VR into the product development process (PDP) still finds an obstacle in the poor integration of the tools employed. The use of VR still needs long and quite hard procedures to work effectively; the models have to be converted into a format that is compatible with VR systems and each task requires an effort to prepare the virtual environment or to post-process the results that depend on the complexity of the task. This work analyses some VR applications into the PDP and describes some ideas to effectively support the operator that prepares the virtual environment. These ideas have been tested by developing four software interfaces, able to create an easy data exchange link between VR and other design tools like CAD, CAE and computer aided control engineering (CACE). 相似文献
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Bin Ma ZhiYing Guo HuaMin Zhou DeQun Li 《The International Journal of Advanced Manufacturing Technology》2007,31(11-12):1092-1100
Virtual reality (VR), as a new technology, is integrated with software systems for engineering, design, and manufacturing. The integration has given a new impetus to the field of computer-aided engineering. This paper presents a research effort aimed at creating a virtual plastic injection molding (VPIM) environment, which is designed and implemented based on techniques such as VR, multidiscipline simulation, and scientific visualization. The VPIM system includes two parts: designing in VPIM and evaluation in VPIM. It is the first system to scrutinize virtual prototype mock-ups of new products, machines and production processes in interactive graphic simulation. During the evaluating phase, coupled to appropriate computer-based reasoning and decision-support tools and driven by data from the real manufacturing environment, a realistic impression of the process of plastic injection molding and manufacture can be achieved and can be changed interactively, and it is possible to thoroughly examine the planned system and eventually detect and remove any defects and inadequacies. The construction approach and key techniques (FEA, virtual assembly, stereoscopic display, a triangulated boundary-representation of an approximating polyhedron, collision detection, etc.) of the system are described in detail. The overall system is a powerful new approach for highly relevant industrial application of VPIM which focuses on the construction and assessment of alternate manufacturing sequences and mold design in an early design stage. Improvement of the design and manufacturing process will lead to better design and reduced development time and cost. 相似文献
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针对商品化CAD系统与虚拟装配系统之间装配信息的转换问题,根据CAD系统中装配信息的表达形式,提出了一种获取装配信息的算法,实现了Pro/E中装配信息的自动提取,并依据Pro/E中装配信息的数据结构和虚拟装配系统的功能要求,设计了一种适用于虚拟装配系统的装配数据结构,较好解决了Pro/E与虚拟装配系统之间的装配信息集成问题,提高了虚拟装配的效率。 相似文献
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提出了基于虚拟环境的驾驭式动态设计方法。该方法使得结构动态设计过程的各个阶段都成为一个包括设计人员和虚拟环境在内的回路,既可以将设计过程及时全面地展示给设计人员,又能够让设计人员方便地对设计过程进行驾驭,充分发挥其经验和创造力。在探讨了该方法的基本思想之后,着重研究了相应的关键技术和系统实现。在此基础上,用一个浸水旋转壳的动态设计过程证明了该方法具有可视化程度高、便于驾驭等优点。 相似文献
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虚拟现实技术在工业设计中的应用 总被引:3,自引:0,他引:3
陈为 《机电产品开发与创新》2006,19(5):122-124
在阐明工业设计(ID)和计算机辅助工业设计(CAID)概念的基础上,着重论述了虚拟现实技术的概念、理论、实现虚拟现实的方法和虚拟产品设计的过程,指出将虚拟现实技术应用于工业设计中,将加快产品开发的进程,使设计者、消费者融为一体设计出满足市场需要的产品。 相似文献
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基于虚拟试车场的轿车悬架耐久性强化试验仿真研究 总被引:1,自引:0,他引:1
汽车产品的耐久性是影响其竞争力的重要因素,同时其开发周期与成本迫切需要在产品概念设计阶段对其耐久性进行控制。针对轿车开发过程中传统悬架耐久性道路强化试验周期长费用高的缺点,以农安试车场各种耐久性强化路面为输入条件,应用虚拟试车场技术(Virtual proving ground,VPG)建立某轿车整车柔性虚拟试车场仿真模型,解决虚拟试车场技术运用中的轮胎模型、橡胶衬套刚度、路面模型和整车模型计算效率等关键技术,分析轿车悬架系统时间历程动应力响应,并与相同工况下的实车耐久性试验结果进行对比,仿真结果与测试结果时域和频域趋势基本一致,验证柔性虚拟试车场技术仿真的悬架系统动应力响应的有效性。在此基础上,实现开发过程中悬架系统耐久性的有效预报。 相似文献