Three-dimensional morphological analysis of the proximal femoral canal, using computer-aided design system, in Japanese patients with osteoarthrosis of the hip

2000 ◽  
Vol 5 (4) ◽  
pp. 361-368 ◽  
Author(s):  
Ayumi Kaneuji ◽  
Tadami Matsumoto ◽  
Mitsuru Nishino ◽  
Toshinori Miura ◽  
Tanzo Sugimori ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Morphological Analysis ◽  
Three Dimensional ◽  
Japanese Patients ◽  
Design System ◽  
Femoral Canal ◽  
Computer Aided ◽  
Aided Design

scholarly journals Development of integrated intelligent computer-aided design system for mechanical power-transmitting mechanism design

2017 ◽  
Vol 9 (7) ◽  
pp. 168781401771038 ◽  
Author(s):  
Isad Saric ◽  
Adil Muminovic ◽  
Mirsad Colic ◽  
Senad Rahimic
Keyword(s):  
Rapid Prototyping ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Mechanical Power ◽  
Design System ◽  
Computer Aided ◽  
Aided Design ◽  
Intelligent Computer

This article presents architecture of integrated intelligent computer-aided design system for designing mechanical power-transmitting mechanisms (IICADkmps). The system has been developed in C# program environment with the aim of automatising the design process. This article presents a modern, automated approach to design. Developed kmps modules for calculation of geometrical and design characteristics of mechanical power-transmitting mechanisms are described. Three-dimensional geometrical parameter modelling of mechanical power-transmitting mechanisms was performed in the computer-aided design/computer-aided manufacturing/computer-aided engineering system CATIA V5. The connection between kmps calculation modules and CATIA V5 modelling system was established through initial three-dimensional models – templates. The outputs from the developed IICADkmps system generated final three-dimensional virtual models of mechanical power-transmitting mechanisms. Testing of the developed IICADkmps system was performed on friction, belt, cogged (spur and bevel gears) and chain transmitting mechanisms. Also, connection of the developed IICADkmps system with a device for rapid prototyping and computer numerical control machines was made for the purpose of additional testing and verification of practical use. Physical prototypes of designed characteristic elements of mechanical power-transmitting mechanisms were manufactured. The selected test three-dimensional virtual prototypes, obtained as an output from the developed IICADkmps system, were manufactured on the device for rapid prototyping (three-dimensional colour printer Spectrum Z510) and computer numerical control machines. Finally, at the end of the article, conclusions and suggested possible directions of further research, based on theoretical and practical research results, are presented.

Design of Longitudinal Beam Layout on a Curved Shell Based on the Production-Oriented Design Concept

1994 ◽  
Vol 10 (04) ◽  
pp. 217-222
Author(s):  
Kohji Honda ◽  
Noriyuki Tabushi
Keyword(s):  
Crude Oil ◽  
Computer Aided Design ◽  
Design Method ◽  
Three Dimensional ◽  
Design System ◽  
Two Dimensional ◽  
Skilled Workers ◽  
System A ◽  
Computer Aided ◽  
Aided Design

A VLCC (very large crude oil carrier) has approximately 1000 curved longitudinal beams, many of which have three-dimensional complicated curvatures. Due to the shortage of highly skilled workers and the need to keep costs down, production and structural designers have worked to reduce the number of such beams. In order to meet the requirements of production, the authors' company has attempted several design approaches for the longitudinal beam layout to reduce the number of beams that have complicated curvature. Recently, through the application of a computer-aided design system, which has been improved for shipbuilding based on the Calma's system, a new design method for the longitudinal beam layout has been successfully developed. A significant number of beams with a twisted configuration have been eliminated and replaced with beams of simpler, two-dimensional shapes. This paper shows the transition of these design approaches, and the application of the new design to building a VLCC.

scholarly journals Rapid Assembly Modeling in Computer Aided Design System

2022 ◽  
Vol 2146 (1) ◽  
pp. 012022
Author(s):  
Chenghua Hong ◽  
Han Ge ◽  
Cunzhong Fang ◽  
Xuyang Zhao ◽  
Ning Liu ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Rapid Development ◽  
Three Dimensional ◽  
Absolute Error ◽  
Design System ◽  
Assembly System ◽  
Assembly Modeling ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design

Abstract Rapid assembly modeling system is a tool that needs to be used in the design process. Because the three-dimensional modeling is intuitive, powerful and can be used in actual engineering, it is more and more used in manufacturing production. In the rapid development of computer-aided design technology, CAD/CAM software is the most commonly used and most widely used modeling tool. Therefore, the purpose of this article to study the rapid assembly modeling in the computer-aided design system is to improve the performance and accuracy of the assembly system and promote the high-quality production of products. This article mainly uses experimental method and case analysis method to test the assembly system designed in this article. The experimental results show that, under low temperature conditions, the relative error and absolute error of the assembly size are in a small space, which meets the actual requirements. Therefore, the system designed in this paper can be used in practice.

scholarly journals An interactive product customization framework for freeform shapes

2017 ◽  
Vol 23 (6) ◽  
pp. 1136-1145 ◽  
Author(s):  
Yunbo Zhang ◽  
Tsz Ho Kwok
Keyword(s):  
Additive Manufacturing ◽  
Computer Aided Design ◽  
Reference Model ◽  
Three Dimensional ◽  
Frame Structure ◽  
Design System ◽  
Content Type ◽  
Additional Tool ◽  
Computer Aided ◽  
Aided Design

Purpose The purpose of this paper is to establish new computer-aided-design (CAD) framework to design custom product that is fabricated additive manufacturing (AM), which can produce complex three-dimensional (3D) object without additional tool or fixture. Additive manufacturing (AM) enables the fabrication of three-dimensional (3D) objects with complex shapes without additional tools and refixturing. However, it is difficult for user to use traditional computer-aided design tools to design custom products. Design/methodology/approach In this paper, the authors presented a design system to help user design custom 3D printable products based on some reference freeform shapes. The user can define and edit styling curves on the reference model using the interactive geometric operations for styling curve. Incorporating with the reference models, these curves can be converted into 3D printable models through the fabrication interface. Findings The authors tested their system with four design applications including a hollow patterned bicycle helmet, a T-rex with skin frame structure, a face mask with Voronoi patterns and an AM-specific night dress with hollow patterns. Originality/value The executable prototype of the presented design framework used in the customization process is publicly available.

scholarly journals Integrated Intelligent CAD System for Interactive Design, Analysis and Prototyping of Compression and Torsion Springs

2021 ◽  
Vol 12 (1) ◽  
pp. 353
Author(s):  
Isad Saric ◽  
Enis Muratovic ◽  
Adil Muminovic ◽  
Adis J. Muminovic ◽  
Mirsad Colic ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
Geometric Modeling ◽  
Three Dimensional ◽  
Design Analysis ◽  
Parametric Models ◽  
Design System ◽  
Intelligent Cad ◽  
Computer Aided ◽  
Aided Design ◽  
Torsion Springs

This paper presents the development and implementation of integrated intelligent CAD (computer aided design) system for design, analysis and prototyping of the compression and torsion springs. The article shows a structure of the developed system named Springs IICAD (integrated intelligent computer aided design). The system bounds synthesis and analysis design phases by means of the utilization of parametric 3D (three-dimensional) modeling, FEM (finite element method) analysis and prototyping. The development of the module for spring calculation and system integration was performed in the C# (C Sharp) programming language. Three-dimensional geometric modeling and structural analysis were performed in the CATIA (computer aided three-dimensional interactive application) software, while prototyping is performed with the Ultimaker 3.0 3D printer with support of Cura software. The developed Springs IICAD system interlinks computation module with the basic parametric models in such a way that spring calculation, shaping, FEM analysis and prototype preparation are performed instantly.

SAMMTB: A Computer Aided Design Tool for Ergonomists

1986 ◽  
Vol 30 (7) ◽  
pp. 694-698 ◽  
Author(s):  
Keith Case ◽  
J. Mark Porter ◽  
Maurice C. Bonney
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Design Tool ◽  
Three Dimensions ◽  
Design System ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Computer Aided ◽  
Aided Design ◽  
Machine Interaction

Sammie (System for Aiding Man-Machine Interaction Evaluation) is a Computer Aided Design system which provides facilities for ergonomics/human factors evaluation at the earliest stage in the design process. Workplaces, for example the interior of a vehicle or a supermarket checkout, are modelled in three dimensions and presented on a computer graphics screen. A range of techniques are available for interactively modifying the design and for an ergonomie evaluation at each stage by the use of a three-dimensional model of the human operator. This paper describes the facilities available and illustrates the system's usefulness by reference to examples taken from recent design assignments.

Constructive Geometry in Three Dimensions for Computer-Aided Design

1982 ◽  
Vol 104 (4) ◽  
pp. 813-816
Author(s):  
R. J. Sharpe ◽  
P. J. Thomas ◽  
R. W. Thorne
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Three Dimensions ◽  
Design System ◽  
Maintenance Costs ◽  
Cad System ◽  
Construction Techniques ◽  
Computer Aided ◽  
Aided Design

Three dimensional construction techniques are described along with the detailed description of several derivations. The resultant algorithms allow construction of points, lines, and conics directly in 3-space. These pieces of geometry are constructed relative to existing lines, conics, and splines which are represented as parametric rational cubics. The generality of these algorithms allows a single routine to handle construction relative to all curve types in the system. This characteristic reduces the amount of code and thus the implementation and maintenance costs of the CAD system. These techniques are being incorporated into a Computer-Aided Design system.

Structural Analysis of Product and Computer-Aided Assembly Planning in AssemBL Software Package

2018 ◽  
pp. 11-33
Author(s):  
A. N. Bozhko
Keyword(s):  
Computer Aided Design ◽  
State Of The Art ◽  
Graph Model ◽  
Design System ◽  
Assembly Planning ◽  
Complex Products ◽  
Assembly Sequences ◽  
Computer Aided ◽  
Cad Cam ◽  
Aided Design

Computer-aided design of assembly processes (Computer aided assembly planning, CAAP) of complex products is an important and urgent problem of state-of-the-art information technologies. Intensive research on CAAP has been underway since the 1980s. Meanwhile, specialized design systems were created to provide synthesis of assembly plans and product decompositions into assembly units. Such systems as ASPE, RAPID, XAP / 1, FLAPS, Archimedes, PRELEIDES, HAP, etc. can be given, as an example. These experimental developments did not get widespread use in industry, since they are based on the models of products with limited adequacy and require an expert’s active involvement in preparing initial information. The design tools for the state-of-the-art full-featured CAD/CAM systems (Siemens NX, Dassault CATIA and PTC Creo Elements / Pro), which are designed to provide CAAP, mainly take into account the geometric constraints that the design imposes on design solutions. These systems often synthesize technologically incorrect assembly sequences in which known technological heuristics are violated, for example orderliness in accuracy, consistency with the system of dimension chains, etc.An AssemBL software application package has been developed for a structured analysis of products and a synthesis of assembly plans and decompositions. The AssemBL uses a hyper-graph model of a product that correctly describes coherent and sequential assembly operations and processes. In terms of the hyper-graph model, an assembly operation is described as shrinkage of edge, an assembly plan is a sequence of shrinkages that converts a hyper-graph into the point, and a decomposition of product into assembly units is a hyper-graph partition into sub-graphs.The AssemBL solves the problem of minimizing the number of direct checks for geometric solvability when assembling complex products. This task is posed as a plus-sum two-person game of bicoloured brushing of an ordered set. In the paradigm of this model, the brushing operation is to check a certain structured fragment for solvability by collision detection methods. A rational brushing strategy minimizes the number of such checks.The package is integrated into the Siemens NX 10.0 computer-aided design system. This solution allowed us to combine specialized AssemBL tools with a developed toolkit of one of the most powerful and popular integrated CAD/CAM /CAE systems.

scholarly journals Automatized Evaluation of Students’ CAD Models

2021 ◽  
Vol 11 (4) ◽  
pp. 145
Author(s):  
Nenad Bojcetic ◽  
Filip Valjak ◽  
Dragan Zezelj ◽  
Tomislav Martinec
Keyword(s):  
Computer Aided Design ◽  
Three Dimensional ◽  
Computer Application ◽  
Test Cases ◽  
Cad Model ◽  
Computer Solution ◽  
3D Cad ◽  
Computer Aided ◽  
Cad Models ◽  
Aided Design

The article describes an attempt to address the automatized evaluation of student three-dimensional (3D) computer-aided design (CAD) models. The driving idea was conceptualized under the restraints of the COVID pandemic, driven by the problem of evaluating a large number of student 3D CAD models. The described computer solution can be implemented using any CAD computer application that supports customization. Test cases showed that the proposed solution was valid and could be used to evaluate many students’ 3D CAD models. The computer solution can also be used to help students to better understand how to create a 3D CAD model, thereby complying with the requirements of particular teachers.

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