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1.
针对AutoCAD二次开发工具进行了研究和探讨,并对AutoCAD二次开发工具的历史发展做了综述.详细介绍了AutoCAD数据库的组织结构和AutoCAD.NET API对象模型的主要对象,并用一个例子分析了.NET访问AutoCAD数据库的开发步骤.  相似文献   

2.
利用AutoCAD VBA向AutoCAD菜单栏添加新菜单项,创建图形用户界面,编制宏代码,并在AutoCAD中设计和定点绘制凸轮轮廓曲线,为在AutoCAD中设计和绘制复杂平面曲线提供了具体实例.  相似文献   

3.
AutoCAD软件是计算机辅助设计的重要工具,但对初学者并不易掌握,文章从如何提高绘图速度和如何准确绘图两个角度介绍了使用AutoCAD的有效方法,并分享了AutoCAD的学习和使用心得,希望对AutoCAD的学习者有所帮助。  相似文献   

4.
介绍了AutoCAD的定制,探究了AutoCAD程序文件、支持文件和图形文件的组织与结构,在此基础上探索在AutoCAD中创建自定义工具栏、工具选项板,并且制作幻灯片文件和幻灯片库文件的基本方法,并提供了AutoCAD的定制及二次开发的具体实例。  相似文献   

5.
以参数化设计为指导思想,以Visual Basic.NET(VB.NET)为编程语言和开发工具,对AutoCAD软件进行二次开发,并给出实例.实例中借助AutoCAD强大的图形功能和VB.NET语言界面友好、功能强大的特点,建立了相应的数学模型,通过自动化界面技术控制AutoCAD应用程序对象来完成零件加工的简化动态模拟.对AutoCAD动态仿真功能进行了研究,并且为VB.NET语言对AutoCAD进行二次开发提供了借鉴.  相似文献   

6.
为提高AutoCAD软件的绘制效率和定向功能。采用Autolisp对AutoCAD软件进行二次开发,以实例介绍了应用Autolisp对AutoCAD进行二次开发的过程。软件系统可快速开发出各类零件的命令集,通过输入相应尺寸能实现零件的快速绘制。Autolisp开发工具能实现AutoCAD的定向开发,提高AutoCAD的绘图效率和准确性。  相似文献   

7.
介绍了利用VBA对AutoCAD进行二次开发的技术基础,对基于Active X技术和应用面向对象方法开发AutoCAD的有关问题进行了分析研究,并以常用函数几何曲线的精确绘制为例,阐明了AutoCAD二次开发的基本思路、主要步骤和具体方法.  相似文献   

8.
介绍了AutoCAD与Word之间的通信机制。基于OLE自动化技术 ,编写了一个能够在AutoCAD图形中与Word应用程序进行交互通信的程序 ,有效地实现了AutoCAD图形中的文本及Word文档中文本的共享和重用  相似文献   

9.
陈勇 《机械》2012,39(2):30-32
板材下料是有效开展生产的一项必要活动,AutoCAD是进行下料排样的计算机绘图和设计的常用软件,同时AutoCAD为用户提供了非常开放的二次开发环境.为此,对作为AutoCAD 2007二次开发工具的ObjectARX 2007进行了探讨和研究,分析了基于ObjectARX的AutoCAD二次开发的程序开发流程,详细阐述了进行板料优化排样程序开发的关键技术以及进行AutoCAD二次开发的命令订制方法,然后实施了以ObjectARX 2007为基础、以Visual Studio 2005为开发平台、以遗传算法为主要优化算法的下料程序开发,在AutoCAD中开发出自动排样的优化下料应用程序.最后,通过排样实例验证了本方法的实用性.  相似文献   

10.
基于ObjectARX进行AutoCAD二次开发的研究   总被引:1,自引:0,他引:1  
介绍了AutoCAD二次开发工具ObjectARX2004的功能特点、类库构成以及ObjectARX应用程序的框架结构,并以具体实例阐述了应用ObjectARX工具进行AutoCAD2004二次开发的过程,说明了学习和掌握ObjectARX对于AutoCAD二次开发具有重要意义。  相似文献   

11.
An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...  相似文献   

12.
The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.  相似文献   

13.
Giannuzzi LA  Utlaut M 《Ultramicroscopy》2011,111(11):1564-1573
30 keV Ga+ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z2, and shows a non-monotonic relationship between contrast and Z2. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z2, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.  相似文献   

14.
This paper proposes a novel grading method of apples,in an automated grading device that uses convolutional neural networks to extract the size,color,texture,an...  相似文献   

15.
分布动态载荷识别的抗噪处理   总被引:2,自引:2,他引:0  
针对正交多项式频域法在用多种响应对矩形薄板进行载荷识别中抗噪性较差的问题,综合运用平均法、矩阵预处理和奇异值截断法等方法对之进行改善,并引入空间映射的思想,将该方法的应用范围拓展为复杂的模型.利用仿真算例,证实了该方法具有较好的抗噪性.  相似文献   

16.
The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...  相似文献   

17.
The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....  相似文献   

18.
针对工程实践中环网通讯相关问题的处理缺乏理论基础及国产化安全级DCS平台的开发缺乏成熟经验借鉴问题,对基于MELTAC-N平台核电厂安全级DCS环网的软硬件实现进行了研究。提出了安全级DCS环网双环网冗余设计、光切换开关设计等硬件设计方法,以及以RPR协议为基础,采用全数据收发策略的软件设计方法。在CPR1000安全级DCS平台上对安全级DCS环网的可靠性及实时性进行了评价,并进行了容错能力、响应时间及响应时间稳定性测试验证实验。结果表明,基于MELTAC-N平台安全级DCS环网软硬件设计具有较好的容错能力及响应时间稳定性。  相似文献   

19.
Abrasive wear has long been recognised as one of the most potentially serious tribological problems facing the operators of many types of plant and machinery; several industrial surveys have indicated that wear by abrasion can be responsible for more than 50% of unscheduled machine and plant stoppages. Locating the operating point of a tribological contact in an appropriate operational ‚map’︁ can provide a useful guide to the likely nature and origins of the surface degradation experienced in use, though care must be exercised in choosing the most suitable parameters for the axes of the plot. Laboratory testing of materials and simulations of machine contacts are carried out for a number of purposes; at one level for the very practical aims of ranking candidate materials or surface hardening treatments in order of their wear resistance, or in an attempt to predict wear lives under field conditions. More fundamentally, tests may be aimed at elucidating the essential physical mechanisms of surface damage and loss, with the longer term aim of building an analytical and predictive model of the wear process itself. In many cases, component surface damage is brought about by the ingress of hard, particulate matter into machine bearing or sealing clearances. These may be running dry although, more usually, a lubricant or service fluid is present at the interface. A number of standardised wear test geometries and procedures have been established for both two- and three-body wear situations, and these are briefly described. Although abrasive wear is often modelled as following an ‚Archard’︁ equation (i.e. a linear increase in material loss with both load and time, and an inverse dependence on specimen hardness) both industrial experience and laboratory tests of particularly lubricated contacts show that this is not always the case: increasing the hardness differential in an abrasively contaminated lubricated pair may not always reduce the rate of damage to the harder surface.  相似文献   

20.
A graph as the new engineering method for estimate the safety of bulging deformation of coke tower is proposed. Through stresses analysis of circumferential weld of coke tower and comparing the stresses produced by pressure with heat stress of steady state, residual stress, bending stress produced by both itself weight and wind loads, it showed that the stresses produced by pressure on the angle distortion are the main factor of equivalent stress of the combined stress. After comparing four kinds of stress controlling conditions, the relation to stress with depth of angular distortion, grade of curvature of angular distortion and half of region of angular distortion has been inferred. Graph of deformation allowable value of coke tower for different condition by angular distortion and half of region of angular distortion has been plotted. The five steps for its engineering use have been explained. The lighter the grade of curvature is, the larger of bulge allowance, may be, and the bigger of depth of angular distortion may pose too. For the coke tower with a popular structure of Dg 5 400 mm×28 mm, the result by graph is nearly more than the result of two formulas formed by other research, the error is less than 7.0%. But, the graph can be easily applied to different size of angular distortion.  相似文献   

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