共查询到11条相似文献,搜索用时 62 毫秒
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提出了一种基于轻量化三维模型的碰撞干涉检查算法.本算法只需要获得某时刻三维模型信息中的三角片顶点位置信息,就可以采用包围盒和判断空间三角形相交结合的方法完成轻量化三维模型的碰撞干涉检查.检查过程根据轻模型的三角片顶点信息构造包围盒,并对包围盒做分割处理,组织成八叉树结构,再进行这些分割后的包围盒的碰撞干涉检查,对发生干涉的叶节点包围盒则再对其中包含的三角面进行相交判断,若相交则说明发生了碰撞干涉.算法已得到初步应用,极大缩短了由大量三角面片构成的轻模型的碰撞干涉检查时间,而且提高了检查的效率和精度. 相似文献
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Recently software industry has paid significant attention to customizing software products across distributed boundaries. Communicating the requirements of multiple clients across distributed borders is a crucial challenge for the software customization process. Local decision-making and local development at the client site are considered methods for reducing difficulties in communicating the requirements of multiple clients across distributed boundaries. This paper introduces a new model called the onshore development model (ODM) for accomplishing the customization requests in the distributed development process of software. This model presents a scenario for enhancing the onsite development of specific requirements to reduce delays and misunderstandings between the clients and the team involved. This model depends on moving the development process to the client’s location. Three empirical studies were conducted to evaluate the proposed model to measure its productivity, time performance, and cost reduction. The proposed model has been compared with two other models: the basic model (BM), which allocates the decision-making process and the development process for teams at the vendor’s location, and the local decision-making model (LDec), which assigns the decision-making process for team at the client’s location. The results of the empirical studies showed significant outperforming of the proposed model over the basic model and local decision-making model in productivity, time performance, and cost reduction. The productivity of the proposed model improved by 39% and 10% more than the basic model and the local decision-making model, respectively. In addition, the time performance of the proposed model became faster by 49% and 20.8% than the basic model and the local decision-making model, respectively. Also, it reduced the total cost of the development process by 31% in terms of the salaries of all persons involved in requirements collecting, decision-making, and development. 相似文献
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浅谈暖通设计CAD软件的发展 总被引:1,自引:0,他引:1
赵志安 《制冷空调与电力机械》2002,23(1):1-3
根据作者的软件开发经验和市场需求,分析了目前国内暖通CAD软件的现状和应用情况,结合暖通工程设计的特点,提出了暖通设计CAD软件的发展方向。 相似文献
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文章在简要介绍了CAD软件工程规范的基础上,通过对实例的分析研究,提出了商品化CAD软件所需具备的基本条件,探讨了开发和推广商品化CAD软件的方法和策略。 相似文献
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上世纪60年代激光刚被发现不久,其良好的相干性就被广泛用于测量设备的研制,在计量领域也以激光为工具建立了各类高水平计量标准,如米定义,几何量及运动量的基标准。半个世纪后的今天,冷原子技术使原子为代表的物质波具有良好的相干特性,它同样被立刻用于计量测试领域,法国计量院提供参与重力国际关键比对的冷原子重力仪就是最好的证明。本文以相干原理为主线,介绍了激光等电磁波在更高分辨力、更大空间范围以及更远物体的运动测量方面的进展,说明激光技术进展对动态测量领域开拓的重要引领作用,同时举例介绍了原子相干性在重力测量以及运动量动态测量中的重要作用。 相似文献
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纸质托盘结构设计软件的开发 总被引:3,自引:3,他引:0
目的研究物流运输包装中托盘结构设计软件开发的方法。方法利用AutoCAD的二次开发工具,结合VBA面向对象编程的强大功能,通过分析纸质托盘的类型、形状和标准托盘的主要尺寸关系,将DVB程序进行自动加载后,实现纸质托盘的参数化设计、效果图的显示及尺寸标注等主要功能。结果此设计软件具有良好的人机交互界面,通过选择托盘类型及输入关键尺寸,即可获得用于加工制造的平面尺寸图,并可根据客户需求实现纸质托盘的自主设计,具有更大的灵活性。结论该软件在纸质托盘的设计和使用上发挥了一定的作用,该设计方法在产品结构设计软件的开发方面具有推广应用价值。 相似文献
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开发了主要用于机构设计、教学等的TJGMA通用软件,介绍了该软件的结构和功能, 并通过算例来说明该软件的优点。 相似文献