scholarly journals Design and Development of Sheet-Metal Elbows Using Programming with Visual Basic for Applications in CATIA

Symmetry ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 33
Author(s):  
José Ignacio Rojas-Sola ◽  
Gloria del Río-Cidoncha ◽  
Rafael Ortíz-Marín ◽  
José María López-Pedregal

This article introduces an innovative application of Visual Basic for Applications (VBA) (Visual Basic macro language) developed in CATIA (Computer-Aided Three-Dimensional Interactive Application), computer-aided manufacturing and engineering design software. Said application enables the three-dimensional (3D) representation and development to be obtained on a plane of the surfaces of cylindrical and conical elbows utilised to join two conduits, since CATIA lacks tools for the design of elements of metal fabrication. The application permits the geometric and dimensional parameters necessary for the creation and development of the analysed elbows to be introduced via a keyboard. Once these values have been entered and it has been verified that the design of the elbow is possible, then the application is programmed within the CATIA “Wireframe and Surface Design” module to obtain the 3D representation of said elbows, and the development of their surface is projected in the CATIA “Drafting” module. Consequently, the incorporation of this tool into CATIA software could increase technical-design productivity by eliminating certain intermediate operations, such as symmetry, and through improving the geometry training of less skilled users.


2005 ◽  
Vol 127 (12) ◽  
pp. 32-34
Author(s):  
Jean Thilmany

This article discusses that how mechanical engineers will pair their already-familiar computer-aided design software with not-so-familiar three-dimensional (3D) displays for true 3D design. This is in accordance to a number of vendors' intent on supplying the newfangled computer monitors, within the next two decades. Although some of the devices are already on the market, affordable 3D monitors and displays seem to be more than a decade away, according to one university professor at work on such a project. Widespread adoption is still hindered by factors such as cost, software availability, and lack of a mouse-like device needed to interact with what’s on screen. Over the past 25 years, mechanical engineers have witnessed evolutionary change in design methods-from pen and paper to two-dimensional software and now to 3-D computer-aided design. While software makers have stepped up with sleeker and faster modeling capabilities, visualization lags. Computer users two decades out will carry out all business, web surfing, and gaming on 3-D displays. That next generation may well find the very idea of 2-D monitors to be as dated as record albums seem to teenagers today.



2016 ◽  
Vol 23 (2) ◽  
pp. 169-174 ◽  
Author(s):  
Mansour Ziaei ◽  
Hojjat Ziaei ◽  
Seyed Younes Hosseini ◽  
Faramarz Gharagozlou ◽  
Ali Akbar Keikhamoghaddam ◽  
...  


2015 ◽  
Vol 751 ◽  
pp. 293-297
Author(s):  
Bin Feng ◽  
Hai Lian Deng ◽  
Li Ping Yang

This paper will discuss computer-aided design software use in textile design, from the development of computer-aided design applications and home textiles design, software is the core of computer-aided design in textile design, graphic combined with three-dimensional software, building the systematic of home textiles design and computer-aided design to enhance the artistic beauty of textile design. Secondly, introduce the two-dimensional and three-dimensional software application in fabric pattern and textile design. We can see the convenience of computer-aided design, which combines technology and art in one. And from the comparison of plane and solid software, both proposed to build a systematic mutual, for textile design, which is based on the performance requirements and the effect of artistic design, and the theoretical analysis of consumer purchase intention and behavior; and discussing from the beauty of color、 formal and spatial three aspects of computer-aided design to enhance the artistic beauty of textile design.



Author(s):  
Dedy Haryanto ◽  
Ainur Rosidi ◽  
G. Bambang Heru K ◽  
Giarno Giarno ◽  
Joko P. Witoko

ANALISIS KEKUATAN MEKANIK DESAIN BEJANA MOLECULAR SIEVE. Reaktor Daya Eksperimental (RDE) menggunakan bahan bakar bola (pebble) dan gas helium sebagai pendingin primernya. Untuk mempertahankan dan menjaga kualitas helium sebagai pendingin sesuai persyaratannya maka dirancang fasilitas Sistem Pemurnian Helium (SPH). Salah satu bagian dari komponen utama fasilitas Sistem Pemurnian Helium ini adalah bejana molecular sieve. Fungsi dari molecular sieve ini untuk menyerap gas CO2, CH4, dan H2O. Tujuan penelitian ini adalah untuk mengetahui kemampuan kekuatan mekanik dari bejana molecular sieve melalui simulasi menggunakan software Computer Aided Three-dimensional Interactive Application (CATIA). Tahapan yang dilakukan dalam menganalisis kekuatan mekanik desain molecular sieve meliputi : pembuatan model 3-dimensi, memasukkan data sifat mekanik material SS304, serta mensimulasikan pengoperasian pada tekanan uji dan temperatur bervariasi. Pada tekanan 30 bar dan temperatur 120 °C tegangan mekanik yang dihasilkan sebesar 4,4608 x 107 N/m2 lebih kecil daripada yield strenght material SS 304 dan berada di daerah elastis material. Sedangkan translational displacement sebesar 1,1375 mm sangat kecil jika dibandingkan dengan dimensi bejana molecular sieve sehingga tidak mengakibatkan perubahan bentuk. Dengan demikian bejana molecular sieve aman untuk dioperasikan guna mendukung penelitian pemurnian helium Kata kunci: bejana molecular sieve, tegangan mekanik, translational displacement, CATIA



2013 ◽  
Vol 442 ◽  
pp. 328-331
Author(s):  
Lei Wang

In this paper, I design and develop a surface morphology testing system using Visual Basic language matched with the measuring instrument used in the production site to get the three-dimensional parameters. This system realizes that to get the parameters directly to show the surface morphology of the mill roll. At last, I analyze the testing data and confirm the correctness and practicability of the testing system.





1996 ◽  
Vol 25 (2) ◽  
pp. 161-168
Author(s):  
David Fertig

This project exploits the combined strengths of Microsoft Excel and Visual Basic for Applications to create a model of German grammar that can serve as a flexible foundation for sophisticated computer-aided language learning (CALL) applications. A structural representation of a sentence is first built using spreadsheet tables of inflectional forms and endings, a lexicon of appropriate vocabulary, and procedures that implement the basic rules of German grammar. The sentence is then presented to the student leaving some problem to be solved (such as endings left blank). Extensive feedback is available to the student, including step-by-step interactive guidance that leads to the correct answer while reinforcing understanding of the relevant principles. Tutorials such as this one can offer the kind of guidance that many students need in order to learn and practice grammar on their own and can thus make an important contribution to a balanced approach to language learning.



2017 ◽  
Vol 18 (1) ◽  
pp. 119-129
Author(s):  
Lan Qi ◽  
Hui Chen ◽  
Xiao Wang ◽  
Wencai Fei ◽  
Donghai Liu

Abstract We present an integrated three-dimensional (3D) spillway model where the realistic and complicated river terrain is implemented by the platform CATIA (Computer Aided Three Dimensional Interactive Application). This integrated 3D spillway model allows for complicated topographic and geomorphic conditions and describes the spatial distribution of the spillway dam (upstream reservoir, downstream river channel and the spillway dam itself) precisely, thus making it a real alternative to the physical model. Furthermore, this model provides the premise and possibility of a full-scale simulation of the spillway flow, that is, it can not only be used to study the hydraulics on the spillway face, but also can be used to study the hydraulics along the downstream river channel and estimate the scour problem associated with both the spillway flow and downstream river channel. In this model, turbulence was simulated using RNG k−ɛ equations. The flow velocity and surface pressure from the numerical model were verified by the data from experiments. Moreover, the river flow was studied and flow velocities downstream were obtained. The scour formed downstream of a ski-jump was also studied in this study on the location and shape of a scour hole. In all, this study provides new approaches for solving relevant hydraulic engineering problems.



Author(s):  
Mark Ellisman ◽  
Maryann Martone ◽  
Gabriel Soto ◽  
Eleizer Masliah ◽  
David Hessler ◽  
...  

Structurally-oriented biologists examine cells, tissues, organelles and macromolecules in order to gain insight into cellular and molecular physiology by relating structure to function. The understanding of these structures can be greatly enhanced by the use of techniques for the visualization and quantitative analysis of three-dimensional structure. Three projects from current research activities will be presented in order to illustrate both the present capabilities of computer aided techniques as well as their limitations and future possibilities.The first project concerns the three-dimensional reconstruction of the neuritic plaques found in the brains of patients with Alzheimer's disease. We have developed a software package “Synu” for investigation of 3D data sets which has been used in conjunction with laser confocal light microscopy to study the structure of the neuritic plaque. Tissue sections of autopsy samples from patients with Alzheimer's disease were double-labeled for tau, a cytoskeletal marker for abnormal neurites, and synaptophysin, a marker of presynaptic terminals.



Author(s):  
Greg V. Martin ◽  
Ann L. Hubbard

The microtubule (MT) cytoskeleton is necessary for many of the polarized functions of hepatocytes. Among the functions dependent on the MT-based cytoskeleton are polarized secretion of proteins, delivery of endocytosed material to lysosomes, and transcytosis of integral plasma membrane (PM) proteins. Although microtubules have been shown to be crucial to the establishment and maintenance of functional and structural polarization in the hepatocyte, little is known about the architecture of the hepatocyte MT cytoskeleton in vivo, particularly with regard to its relationship to PM domains and membranous organelles. Using an in situ extraction technique that preserves both microtubules and cellular membranes, we have developed a protocol for immunofluorescent co-localization of cytoskeletal elements and integral membrane proteins within 20 µm cryosections of fixed rat liver. Computer-aided 3D reconstruction of multi-spectral confocal microscope images was used to visualize the spatial relationships among the MT cytoskeleton, PM domains and intracellular organelles.



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