共查询到20条相似文献,搜索用时 46 毫秒
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以Visual Studio 2010C++为集成开发环境,以UG/Open API为开发接口,对UG的二次开发进行深入探究,并以UG NX的开发界面为支撑,对旋转刀柄架进行自动装配.通过该装配实例对UG自动装配的关键技术进行详细论述.实例验证表明,利用UG实现自动装配,可以避免虚拟手动装配造成的繁琐,缩短产品研发周期,降低成本,提高装配效率. 相似文献
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针对传统设计方法只能设计单一产品模型,且无法存储设计整个过程的问题,本文在UG系统的基础上,探讨参数化设计的功能和UG环境下三维模型参数化设计的实现策略和途径.采用基于C/S二次开发的参数化设计方法,利用UG/Open、VC、DataBase等相关工具极大程度地反映设计要求,并支持对知识库的创建、知识的获取及使用,满足... 相似文献
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通过UG/open GRIP 和UG/Open API编程,用截面扫掠和网格曲面两种方法,实现了大客车车身骨架中曲线型钢构件的快速三维实体建模,有利于提高建模效率,亦可供其他曲线型钢骨架结构的快速三维建模参考. 相似文献
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在分析三坐标测量机输出文件规则的基础上,针对逆向工程数据处理中存在的重复操作、精度不高等问题,利用UG的二次开发工具UG/OPEN GRIP,编写了"点云分层"和"数据投影"两个程序,减少了数据处理的重复操作,提高了UG软件在逆向工程中的应用效率,为逆向工程中的应用问题找到了一种新的解决思路和方法. 相似文献
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目前,基于UG二次开发的参数化建模方法多采用交互式运行模式,鲜有基于批处理模式的UG二次开发方法.文章以榴弹外形结构参数化设计系统为例,结合弹药设计相关理论,通过可视化界面对榴弹的外形结构进行设计并建立参数化模型,以读写数据文件的方式完成系统中的数据交互,采用基于批处理模式的UG二次开发方法编写应用程序,从后台调用UG完成对模型的建立.实现了对多个部件的快速操作,弥补了基于交互模式的UG二次开发应用程序只能对单一部件进行操作且无法脱离UG独立运行的缺陷,为弹药一体化设计平台和复杂外形的弹药快速建模提供了参考. 相似文献
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A method is proposed for estimating the parameters of a mixture of exponential and Weibull distributions for which the accuracy of preliminary estimates obtained by graphical analysis is refined in accordance with the criterion of maximum likelihood. The efficiency of the proposed method is supported by the results of statistical modeling. 相似文献
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An approximate analytical expression is derived for the velocity of the front of the wave of change of boiling modes on a
rod and on a plate. The impact of the Thomson effect and of the heater orientation in the gravity field is included. Adequate
agreement is demonstrated between the derived relations and experimental data. 相似文献
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Liebert A Wabnitz H Grosenick D Möller M Macdonald R Rinneberg H 《Applied optics》2003,42(28):5785-5792
A novel method for the determination of the optical properties of tissue from time-domain measurements is presented. The data analysis is based on the evaluation of the first moment and the second centralized moment, i.e., the mean time of flight and the variance of the measured distribution of times of flight (DTOF) of photons injected by short (picosecond) laser pulses. Analytical expressions are derived for calculation of absorption and of reduced scattering coefficients from these moments by application of diffusion theory for infinite and semi-infinite homogeneous media. The proposed method was tested on experimental data obtained with phantoms, and results for absorption and reduced scattering coefficients obtained by the proposed method are compared with those obtained by fitting of the same data with analytical solutions of the diffusion equation. Furthermore, the accuracy of the moment analysis was investigated for a range of integration limits of the DTOF. The moment analysis may serve as a comparatively fast method for evaluating optical properties with sufficient accuracy and can be used, e.g., for on-line monitoring of optical properties of biological tissue. 相似文献
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水三相点是开尔文热力学温度的唯一基准点,也是ITS-90国际温标重要的定义固定点。因此,水三相点不确定度分析对整个温标的建立、温度量值传递起着至关重要的作用。近3年来,中国计量科学研究院研制出一系列高质量的水三相点容器,加强了水三相点的研究,为不确定度的分析提供了更为可靠的实验依据。同时,不确定度的分析也是客观评价新研制容器性能的一个重要指标。因此,根据实验结果对新研制容器所复现的水三相点进行了不确定度评定。评定结果表明,其扩展不确定度为0.16mK(k=2.69,P=0.99)。 相似文献
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