TANGO-UD: A simple solid modeling software package for mass properties analysis of robot welding tools

1991 ◽  
Vol 10 (4) ◽  
pp. 344-349 ◽  
Author(s):  
Luis C. Cattani ◽  
Paul J. Eagle
Author(s):  
Nisha Kumari ◽  
Kaushik Kumar

Composite based materials are finding application in a large number of research and engineering spectrum due to its better mechanical properties (strength and stiffness), inherent surface finish, easiness in fabrication and installation and corrosion resistant. They are very strong and firm, yet very light in weight due to which lower weight-to-volume ratio can be achieved and stiffness to weight is 1.5 times greater than the non-ferrous materials like Aluminum. The work is undertaken in two parts. First and foremost being modeling and virtual estimation of mechanical properties using CREO and ANSYS for currently used aluminum based calipers and fabrication of the composites and testing of the same. A comparison is performed between the virtual and experimental results and also the effectiveness of composite based calipers over Aluminum ones is studied. Here two polymeric based composites are proposed for fabrication which are thermoplast and thermoset based composites respectively. The braces are modeled using a solid modeling Software, CREO and the same is tested using ANSYS.


2013 ◽  
Vol 371 ◽  
pp. 468-472
Author(s):  
Mircea Viorel Drăgoi ◽  
Slobodan Navalušić

3D scanning is one of the basic methods to gather data for reverse engineering. The main drawback of 3D scanning is that its output - the point cloud - can never be used directly to define surfaces or solids useful to reconstruct the electronic 3D model of the scanned part.The paper presents a piece of software designed in VisualLISP for AutoCAD, software that acts as a point cloud to 3D primitives converter. The novelty consists of the method used to find the parameters of the primitive that best fits to the point cloud: the mass properties of regions are used to find the center of a cones cross section. Parts have been scanned and the point clouds processed. The results obtained prove the correctness of the algorithm and of the method applied. A piece of software that processes the point cloud in order to find the 3D primitive that it fits the best has been developed. The output is the 3D primitive that successfully and accurate replaces the point cloud. Some adjacent tools were designed, so the entire software package becomes a useful tool for the reverse engineering user. The ways the researches can be continued and developed are foreseen, as well


Author(s):  
Thomas E. Doyle ◽  
David Musson ◽  
Jon-Michael Booth

Visualization literature suggests that solid-modeling software tools improve visualization skills as a result of interaction with the model. As an extension of these findings, the authors proposed that product dissection and real-time simulation of the model should further improve visualization. Our prior study examined visualization performance using solid-modeling in three teaching modalities of a Freshmen Design and Graphics course: 1) Traditional, 2) Project Based Dissection, and 3) Simulation Based Design. The first and second modalities focused assessment on the part/assembly form, whereas the third modality transitioned the outcome expectations to understanding and function of mechanism design. Our comparison between teaching modalities revealed an unexpected bifurcation of results where the top performing group from several years of data demonstrated slight performance improvement with consistent variance, while the lower performing group decreased in performance with substantial increase in variance. It was proposed that the abstract nature of mentally reconstructing a solid-model or real- time simulation was a potential factor in the lower performing group. In September 2013 the author implemented rapid prototyping capability as pilot study in improving the traditional Design & Graphics course. This paper will discuss the implementation of rapid prototyping and present the preliminary results on visualization performance. This paper will be of interest to educators interested in first year Design & Graphics.


2020 ◽  
Vol 8 (11) ◽  
pp. 336-345
Author(s):  
Jasurbek Gulomov ◽  
◽  
Rayimjon Aliev ◽  
Murad Nasirov ◽  
Jakhongir Ziyoitdinov ◽  
...  

Nanotechnologies are entering every field. Nanoparticles have been widely used in medicine and technology. We decided to study the behavior of nanoparticles under the influence of light and its effects on solar cells, based on a number of properties. How gold and silver nanoparticles are introduced into the optical layer of the solar cell has been studied enough to affect the properties of the solar cell. However, the effect of silicon-based solar cell metal nanoparticles in the n domain on the solar cell has not been sufficiently studied. In addition, in this study, the properties of solar cells, which included nanoparticles of various shapes, were modeled. Since the end of the last century, new methods of modeling have been introduced into scientific research. A lot of modeling software has been developed. They are based on a numerical method. Synopsys program of Sentaurus TCAD software package was used in the modeling to ensure the accuracy and reliability of the research. Using Sentaurus TCAD, a model of a silicon-based solar cell with simple and various shapes of platinum nanoparticles embedded in the n field was developed. The focus is on determining the effect of the shape of a nanoparticle introduced on solar cells on its properties. The effect of nanoparticles on the optical and I-V characteristics of a solar cell is also analyzed in depth.


Author(s):  
Raymond J. Rutkowski ◽  
Gu¨l E. Okudan

Selecting the “right” solid modeling software is a complex, multi-criteria decision-making problem. Some of these criteria relate to ease of learning, educational materials built into the software, learning curve issues, performance of the software for different solid modeling functions, operations and utilities, and cost. Beyond selecting the right software, the decision-maker should also be concerned about (1) conceptual learning of the solid modeling topics while “the right software” is being used, and (2) transfer of conceptual learning between solid modelers. This is because a sound conceptual learning using one software might increase the probability of learning another in less time. Accordingly, this paper investigates the impact of icon recognition as an aid to transfer conceptual learning between solid modelers. The investigation includes a review of the literature on icon design and usage as it relates to solid modeling, in addition to an experiment in which the icon recognition correctness for over 20 operation icons were compared across two modelers. The results shed light into the impact of icon designs on the transfer of learning between solid modelers using the correct recognition counts as the transfer measure.


2008 ◽  
Vol 392-394 ◽  
pp. 60-63 ◽  
Author(s):  
J.F. Zhang ◽  
Yong Wang

ObjectARX is a development technology of AutoCAD based on MFC. The developed ARX program can do the job like finishing the drawing automatically and creating a swept-solid modeling. The general modeling software, such as Pro/Engineer, can not create a swept-solid with 3D solid or surface. The profiles of the parts may be expressed by some equations like spur gear, while others may be not like bevel gear and space cam. In this paper, a solution for the development of part without accurate profile equation by using the ARX technology is investigated. With the help of the ARX in AutoCAD, the related entities in the database to do some Boolean operations are manipulated and the swept modeling is created. As the examples, the 3D solid model of a gear and a cam is built to demonstrate the use of the method. The limitation of the method is also discussed.


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