NX 10 for Engineering Design -- Learning Edition

NX is one of the world’s most advanced and tightly integrated CAD/CAM/CAE product development solution. Spanning the entire range of product development, NX delivers immense value to enterprises of all sizes. It simplifies complex product designs, thus speeding up the process of introducing products to the market. The NX software integrates knowledge-based principles, industrial design, geometric modeling, advanced analysis, graphic simulation, and concurrent engineering. The software has powerful hybrid modeling capabilities by integrating constraint-based feature modeling and explicit geometric modeling. In addition to modeling standard geometry parts, it allows the user to design complex free-form shapes such as airfoils and manifolds. It also merges solid and surface modeling techniques into one powerful tool set. This self-guiding tutorial provides a step-by-step approach for users to learn NX 10. It is intended for those with no previous experience with NX. However, users of previous versions of NX may also find this tutorial useful for them to learn the new user interfaces and functions. The user will be guided from starting an NX 10 session to creating models and designs that have various applications. Each chapter has components explained with the help of various dialog boxes and screen images. These components are later used in the assembly modeling, machining and finite element analysis. The files of components are also available online to download and use. We first released the tutorial for Unigraphics 18 and later updated for NX 2 followed by the updates for NX 3, NX 5, NX 7 and NX 9. This write-up further updates to NX 10. Our previous efforts to prepare the NX self-guiding tutorial were funded by the National Science Foundation’s Advanced Technological Education Program and by the Partners of the Advancement of Collaborative Engineering Education (PACE) program

Curved Pattern Origami

Origami is the art of paper folding. It transforms paper into a completed form through folding techniques. “ORI” means “folding” and “GAMI” means “paper” in Japanese. Japan has developed the most extensive tradition of origami, although the exact origin of origami remains unknown. In this thesis, I use a computer to design folding patterns, and then use a laser cutter to cut and etch the patterns in paper. Firstly, I implemented a C++ application to define folding patterns and to save the patterns in EPS file format. I also used another C++ application developed by a PhD student Ozgur Gonen. This application permits us to create more complicated geometric patterns. Secondly, I exported the EPS file to an AutoCAD DWG file using Adobe Illustrator. Thirdly, I set up the AutoCAD file for the laser cutter, moving, resizing, and placing the drawing elements onto separate layers with different colors in AutoCAD. Finally, I operated the laser cutter to let laser cut through material. The application that I implemented allows us to draw both straight lines and diagonals. However, we can arrange these lines only on a single square. In contrast, the application developed by Ozgur Gonen makes us able to arrange these lines on a diversity of geometries, such as triangles, rims, and polygons, though its diagonal-drawing function has not been implemented yet. Drawing folds using these applications has several advantages: scaling, stretching, and repetition are easy. Furthermore, we can always reload and modify any drawings. To identify the performance requirements in our developed software solutions, I executed some of the crease patterns from the book “Folding Techniques for Designers: From Sheet to Form” by Paul Jackson as our test cases. The test report will serve as a base for future studies on how to maintain and drive continuous quality improvement in the software in meeting user requirements

Using Computer Technology Tools to Improve the Teaching-Learning Process in Technical and Vocational Education: Mechanical Engineering Subject Area

This paper discusses the integration of computer assisted instructions (CAI) with traditional class room teaching. It describes a teaching method to bring real-world of industrial work into the classroom that underscores the need to learn fundamental principles while adding excitement and relevance to the experience. This paper presents results of a case study undertaken to understand the effect of computer assisted teaching methodology on learning effectiveness in classroom environment. The effects of computer assisted instructions on different levels of cognition of individual learners have also been evaluated. The computer aided drawing (CAD), computer aided manufacturing (CAM) and computer numerical control (CNC) courses at the Bahrain institute are an integral part of this attempt. These courses emphasize the development of a 3-D geometric computer model and application of this digital database to all phases of the design process. The students make freehand sketches, build computer models, mate assemblies of parts, perform various analysis, create kinematics simulations, generate final design drawings, import engineering drawing as DXF file, generate NC file to build rapid prototypes as shown in the table 1 below. Keywords: Computer Technology, C.N.C and AutoCad Softwar

Flexible manufacturing system utilizing computer integrated control and modeling

In today\u27s fast-automated production, Flexible Manufacturing Systems (FMS) play a very important role by processing a variety of different types of workpieces simultaneously. This study provides valuable information about existing FMS workcells and brings to light a unique concept called Programmable Automation. Another integrated concept of programmable automation that is discussed is the use of two feasibility approaches towards modeling and controlling FMS operations; the most commonly used is programmable logic controllers (PLC), and the other one, which has not yet implemented in many industrial applications is Petri Net controllers (PN). This latter method is a unique powerful technique to study and analyze any production line or any facility, and it can be used in many other applications of automatic control. Programmable Automation uses a processor in conventional metal working machines to perform certain tasks through program instructions. Drilling, milling and chamfering machines are good examples for such automation. Keeping the above issues in concem; this research focuses on other core components that are used in the FMS workcell at New Jersey Institute of Technology, such as; industrial robots, material handling system and finally computer vision

A survey on personal computer applications in industrial design process

Thesis (Master)--Izmir Institute of Technology, Industrial Design, Izmir, 1999Includes bibliographical references (leaves: 157-162)Text in English, Abstract: Turkish and Englishxii, 194 leavesIn this thesis, computer aided design systems are studied from the industrial designer's point of view. The study includes industrial design processes, computer aided design systems and the integration aspects.The technical issues are priorly studied, including current hardware and software technologies. The pure technical concepts are tried to be supported with real-world examples and graphics. Several important design software are examined, whether by personal practice or by literature research, depending on the availability of the software.Finally, the thesis include a case study, a 17" LCD computer monitor designed with a set of graphic programs including two-dimensional and three-dimensional packages.Keywords: Computers, industrial design methods, design software, computer aided design

Building oriented surface generation through IGES specification

This thesis focuses the use of Initial Graphics Exchange Specification to generate automatically three dimensional surfaces. Currently, different CAD systems utilize their own data formats to generate graphic databases which are not compatible with one another. Besides, most of the existing CAD systems require an interactive data input process which is very much time consuming. In order to solve above problems, an efficient algorithm has been developed in this research to automatically generate portable graphic database following ICES specifications. This portable graphic database can be adopted by different commercial CAD/CAM systems. Using the proposed method, the current design process can be upgraded from the interactive data input method to automatic modelling method that accelerates design process in surface generation significantly. The main objectives of this research are: (1) curtail the surface generation time, (2) reduce the memory space for data storage and communication. A user-friendly program has been written in FORTRAN 77 to apply the proposed algorithm. A case study illustrates the effectiveness of the proposed method

Design of Composite Stairs in UTP Academic Blocks

his report basically discusses the research done on the proposed topic, which is Design of Composite Stairs in UTP Academic Block. The objective of the project is to design and analyze the proposed composite stairs structure using glass fiber reinforced plastic, specifically glass fiber reinforced epoxy, GRE. LAP software will be platform for the first phase to determine the suitable thickness of the components under the maximum tensile and compressive loading situation, by the use of core (sandwich laminate) and without core (pure laminate). Next, fabrication process of the stairs components using the state of the art Vacuum Infusion Process (VIP) will be designed that suits the design shape. Specific tooling and equipments for the purpose are identified where the process route would be different between the sandwich laminate and pure laminate. Few procedures are created and investigated for the least cost and material used to produce the whole stairs. In the end, a sample will be produced and will be tested for flexural strength. The sample’s actual thickness and flexural strength then will be used again for re-analysis in LAP to get the new laminate thickness and number of layers. The components’ design likely to be nine rectangular tubular shape of specific dimension, assembled as stairs which has three steps. Final thickness value for sandwich laminate is 8.12 mm and for without the use of core, the value is 5.72 mm. Designed fabrication route starts with VIP, cutting process using diamond cutter machine and assembly by the means of epoxy adhesive

Fabrication and Flow Dynamics Analysis of Micromixer for Lab-on-a-Chip Devices

The miniaturized systems designed for lab-on-a-chip (LOC) technologies are generally implemented with a micro-scale mixer to provide intimate contact between the reagent molecules for interactions and chemical reactions. The exponential increase of research in microfabrication and microfluidic applications highlights the importance of understanding the theory and mechanism that governs mixing at the microscale level. In this study, the fabrication of an active and passive micromixer was discussed. The optimized state of art soft lithography and 3D printing was used as a microfabrication technique. The challenges at different fabrication steps were presented along with the modifications. Microelectrodes were integrated with the active microfluidic mixer to create an electrokinetic effect. The fluid flow field inside the micromixerwas characterized by the Micro Particulate Image Velocimetry (Micro-PIV) system. Besides, numerical simulations were performed on 2D and 3D micromixers. Finally, results obtained in experiment and numerical simulations were analyzed to get a better understanding of the micromixer design

Application-driven visual computing towards industry 4.0 2018

245 p.La Tesis recoge contribuciones en tres campos: 1. Agentes Virtuales Interactivos: autónomos, modulares, escalables, ubicuos y atractivos para el usuario. Estos IVA pueden interactuar con los usuarios de manera natural.2. Entornos de RV/RA Inmersivos: RV en la planificación de la producción, el diseño de producto, la simulación de procesos, pruebas y verificación. El Operario Virtual muestra cómo la RV y los Co-bots pueden trabajar en un entorno seguro. En el Operario Aumentado la RA muestra información relevante al trabajador de una manera no intrusiva. 3. Gestión Interactiva de Modelos 3D: gestión online y visualización de modelos CAD multimedia, mediante conversión automática de modelos CAD a la Web. La tecnología Web3D permite la visualización e interacción de estos modelos en dispositivos móviles de baja potencia.Además, estas contribuciones han permitido analizar los desafíos presentados por Industry 4.0. La tesis ha contribuido a proporcionar una prueba de concepto para algunos de esos desafíos: en factores humanos, simulación, visualización e integración de modelos