Dynamic Non-Interference Constraints in Goal-Directed Geometry

1995 ◽  
Author(s):  
Stewart Coulter ◽  
Bert Bras ◽  
David Rosen
Keyword(s):  
Computer Aided Design ◽  
Preliminary Design ◽  
Design Tools ◽  
Multi Objective Optimization ◽  
Computational Framework ◽  
Linkage Design ◽  
Engineering Models ◽  
Aided Design ◽  
Dynamic Interference

Abstract Improvements in computer-aided design tools can significantly increase designer productivity. The ability to explore a variety of possible designs quickly and effectively is essential for a designer. In a previous paper, Goal Directed Geometry (GDG) was introduced as a computational framework for preliminary design, aiding the formulation of engineering models with geometric considerations, and the solution of these models with a multi-objective optimization package. The geometric considerations were limited to static noninterference constraints, introducing a metric and method for prevention of geometric interference between two subassemblies. In this paper, this metric and method are expanded to include the prevention of interference between moving subassemblies, or dynamic interference. Based on a series of repetitive static checks, this metric is intended to be accurate and simple for the designer to use. A case study is presented showing the GDG implementation for a linkage design problem, demonstrating the use of this metric. This parametric GDG model is then solved using an existing optimization program called DSIDES.

KINSYN III: A New Human-Engineered System for Interactive Computer-Aided Design of Planar Linkages

1977 ◽  
Vol 99 (2) ◽  
pp. 440-448 ◽  
Author(s):  
A. J. Rubel ◽  
R. E. Kaufman
Keyword(s):  
Computer Aided Design ◽  
Design System ◽  
Interactive Approach ◽  
Synthesis Techniques ◽  
Graphical Interaction ◽  
Linkage Design ◽  
Computer Aided ◽  
Planar Linkages ◽  
Aided Design

KINSYN III is the latest version of a computer-aided linkage design system with features not previously described. Concentrating on the new features, this paper describes the system and includes case study photographs. The system has capabilities for either synthesizing or constructing pin- or slider-jointed planar linkages of almost any topology and for analysis of this same class of mechanisms. Emphasis is on synthesis techniques and man-computer graphical interaction. Problems in linkage synthesis and design are discussed along with KINSYN III’s interactive approach to their solution.

HyperGear: An Object Oriented Design Program for Single Stage Gear Box Design

1991 ◽  
Author(s):  
Gary A. Gabriele ◽  
Agustî Maria I. Serrano
Keyword(s):  
Computer Aided Design ◽  
Object Oriented ◽  
Design Tool ◽  
Single Stage ◽  
Design Tools ◽  
Object Oriented Design ◽  
Computer Aided ◽  
Gear Box ◽  
Aided Design ◽  
Object Oriented Languages

Abstract The need for superior design tools has lead to the development of better and more complex computer aided design programs. Two of the more important new developments in application tools being investigation are Object Oriented Languages, and HyperMedia. Object Oriented Languages allow the development of CAD tools where the parts being designed and the design procedures specified are conceptualized as objects. This allows for the development of design aids that are non-procedural and more readily manipulated by the user trying to accomplish a design task. HyperMedia allows for the easy inclusion of many different types of data, such as design charts and graphs, into the tool that are normally difficult to include in design tools programmed with more conventional programming languages. This paper explores the development of a computer aided design tool for the design of a single stage gear box using the development HyperCard® environment and the HyperTalk® programming language. The resulting program provides a user friendly interface, the ability to handle several kinds of design information including graphic and textual, and a non-procedural design tool to help the user design simple, one stage gear boxes. Help facilities in the program make it suitable for undergraduate instruction in a machine elements design course.

Computer-Aided Mechanism Design: Now and the Future

1995 ◽  
Vol 117 (B) ◽  
pp. 93-100 ◽  
Author(s):  
A. G. Erdman
Keyword(s):  
Mechanism Design ◽  
Computer Aided Design ◽  
Current Status ◽  
Current Trends ◽  
Linkage Design ◽  
Computer Aided ◽  
The Future ◽  
Aided Design

The current status of computer-aided design of mechanisms is reviewed. The available software is described and several industrial examples are presented to illustrate current trends in the field of linkage design and analysis. Future strategies and CAD environments are also discussed.

Representing Relationships in Hierarchical Assemblies

1998 ◽  
Author(s):  
Jeff Heisserman ◽  
Raju Mattikalli
Keyword(s):  
Automated Reasoning ◽  
Computer Aided Design ◽  
Design System ◽  
Design Tools ◽  
Cad Tools ◽  
Automated Generation ◽  
Aircraft Systems ◽  
Computer Aided ◽  
Aided Design ◽  
Prototype Design

Abstract Computer aided design tools are gaining popularity in industry due to their ability to model the geometric aspects of products. This has shown substantial benefit for reducing the need and expense of building physical prototypes and allowing parts and tooling to be manufactured directly from these models. However, the current capabilities in existing CAD tools for modeling assemblies are quite limited. In this paper we introduce a representation for describing interfaces between parts within hierarchical assemblies for capturing functional and physical mating relations. This representation is designed to support automated reasoning and automated generation and modification of assemblies. It is also designed for use with very large assemblies, compactly representing the interfaces of parts and assemblies that are reused within larger assemblies. We describe how this representation is used in our prototype design system, Genesis, for designing aircraft systems.

Tools for Collaborative Business Process T Modeling

2010 ◽  
pp. 1643-1652 ◽  
Author(s):  
Paz Perez González ◽  
Jose M. Framinan
Keyword(s):  
Business Process ◽  
Process Modeling ◽  
Computer Aided Design ◽  
Process Management ◽  
Business Processes ◽  
Design Tools ◽  
Collaborative Business Process ◽  
Or Organization ◽  
Aided Design ◽  
Common Understanding

A business process can be defined as a set of related tasks that are carried out within a business or organization in order to obtain certain output that should add value for the business client or organization (Gunasekaran & Kobu, 2002). An enterprise can be then analyzed and integrated through its business processes. Thus, business process modeling (BPM) becomes a fundamental part of business process management, as it enables a common understanding and analysis of a company’s business processes. Particularly, BPM using computer-aided design tools and a standard visual form of notation to describe, validate, and simulate business processes has taken on a new importance (Jonah, 2002).

scholarly journals Computer-Aided Design of Microfluidic Circuits

2020 ◽  
Vol 22 (1) ◽  
pp. 285-307 ◽  
Author(s):  
Elishai Ezra Tsur
Keyword(s):  
Computer Aided Design ◽  
Integrated Design ◽  
Optimization Methods ◽  
Performance Requirements ◽  
Computer Aided ◽  
Paper Based Microfluidics ◽  
Specification Synthesis ◽  
Description Languages ◽  
Aided Design

Microfluidic devices developed over the past decade feature greater intricacy, increased performance requirements, new materials, and innovative fabrication methods. Consequentially, new algorithmic and design approaches have been developed to introduce optimization and computer-aided design to microfluidic circuits: from conceptualization to specification, synthesis, realization, and refinement. The field includes the development of new description languages, optimization methods, benchmarks, and integrated design tools. Here, recent advancements are reviewed in the computer-aided design of flow-, droplet-, and paper-based microfluidics. A case study of the design of resistive microfluidic networks is discussed in detail. The review concludes with perspectives on the future of computer-aided microfluidics design, including the introduction of cloud computing, machine learning, new ideation processes, and hybrid optimization.

scholarly journals Finocyl Grain Design Using the Genetic Algorithm in Combination with Adaptive Basis Function Construction

2019 ◽  
Vol 2019 ◽  
pp. 1-12
Author(s):  
Saeed Mesgari ◽  
Mehrdad Bazazzadeh ◽  
Alireza Mostofizadeh
Keyword(s):  
Genetic Algorithm ◽  
Level Set Method ◽  
Level Set ◽  
Computer Aided Design ◽  
Optimization Design ◽  
Design Method ◽  
Burning Surface ◽  
Aided Design ◽  
Function Construction

This study deals with the application of optimization in Finocyl grain design with ballistic objective functions using a genetic algorithm. The classical sampling method is used for space filling; a level-set method is used for simulating the evaluation of a burning surface of the propellant grain. An algorithm is developed beside the level-set code that prepares the initial grain configuration using a computer-aided design (CAD) to export generated models to the level-set code. The lumped method is used to perform internal ballistic analysis. A meta-model is used to surrogate the level-set method in an optimization design loop. Finally, a case study is done to verify the proposed algorithm. Observed results show that the grain design method reduced the design time significantly, and this algorithm can be used in designing any grain type.

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