scholarly journals A Design Feature-based Approach for Product Remanufacturability Assessment and Analysis

Procedia CIRP ◽  
2016 ◽  
Vol 53 ◽  
pp. 15-20 ◽  
Author(s):  
S.K. Ong ◽  
H.C. Fang ◽  
A.Y.C. Nee
Keyword(s):  
Design Feature ◽  
Feature Based

scholarly journals An approach to automatic boundary segmentation of solid models using virtual topology: toward reconstruction of design features

2020 ◽  
Vol 7 (3) ◽  
pp. 367-385
Author(s):  
Yingzhong Zhang ◽  
Yufei Fu ◽  
Jia Jia ◽  
Xiaofang Luo
Keyword(s):  
Design Feature ◽  
Boundary Representation ◽  
Virtual Topology ◽  
Design Features ◽  
Complex Part ◽  
Novel Approach ◽  
Solid Models ◽  
Medium Level ◽  
Feature Based ◽  
Low Dimensional

Abstract Boundary segmentation of solid models is the geometric foundation to reconstruct design features. In this paper, based on the shape evolution analysis for the feature-based modeling process, a novel approach to the automatic boundary segmentation of solid models for reconstructing design features is proposed. The presented approach simulates the designer’s decomposing thinking on how to decompose an existing boundary representation model into a set of design features. First, the modeling traces of design features are formally represented as a set of feature vertex adjacent graphs that use low-dimensional vertex entities and their connection relations. Then, a set of Boolean segmentation loops is searched and extracted from the constructed feature vertex adjacent graphs, which segment the boundary of a solid model into a set of regions with different design feature semantics. In the search process, virtual topology operations are employed to simulate the topological changes resulting from Boolean operations in feature modeling processes. In addition, to realize effective search, search strategies and search algorithms are presented. The segmentation experiments and case study show that the presented approach is feasible and effective for the boundary segmentation of medium-level complex part models. The presented approach lays the foundation for the later reconstruction of design features.

scholarly journals Design Feature-Based Jetfighter Shape Modeling

2013 ◽  
Vol 14 (3) ◽  
pp. 222-228
Author(s):  
Jing Zang ◽  
Hu Liu ◽  
Tianping Liu ◽  
Xianping Ni
Keyword(s):  
Design Feature ◽  
Shape Modeling ◽  
Feature Based

scholarly journals A Prototype of Feature-Based Design for Assembly

1990 ◽  
Author(s):  
T. L. DeFazio ◽  
A. C. Edsall ◽  
R. E. Gustavson ◽  
J. A. Hernandez ◽  
P. M. Hutchins ◽  
...  
Keyword(s):  
Information Source ◽  
Design Feature ◽  
Functional System ◽  
Design System ◽  
Prototype System ◽  
Design For Assembly ◽  
Assembly Process ◽  
Feature Based ◽  
Feature Based Design ◽  
Assembly Analysis

Abstract This paper describes a prototype software system that implements a form of feature-based design for assembly. It is not an automated design system but instead a decision and design aid for designers interested in Concurrent Design. Feature-based design captures design intent (assembly topology, product function, manufacturing, or field use) while creating part and product geometry. Design for assembly as used here extends existing ideas about critiquing part shapes and part count to include assembly process planning, assembly sequence generation, assembly fixturing assessments, and assembly process costs. This work was primarily Interested in identifying the information important to DFA tasks, and how that information could be captured using feature-based design. It was not intended to extend the state of the art in feature-based geometry creation, but rather to explore the uses of the information that can be captured. The prototype system has been programmed in LISP on Sun workstations. Its research contributions comprise integration of feature-based design with several existing and new assembly analysis and synthesis algorithms; construction of feature properties to meet the needs of those algorithms; a carefully chosen division of labor between designer and computer; and illustration of feature-based models of products as the information source for assembly analysis and process design. Some of its functions have been implemented approximately or partially but they give the flavor of the benefits to be expected from a fully functional system.

Unified Feature Definition for Feature Based Design and Feature Based Manufacturing

1995 ◽  
Author(s):  
Reinholt Geelink ◽  
Otto W. Salomons ◽  
Fjodor van Slooten ◽  
Fred J. A. M. van Houten ◽  
Huub J. J. Kals
Keyword(s):  
Feature Recognition ◽  
Design Feature ◽  
Geometric Constraints ◽  
Planning System ◽  
Conceptual Graphs ◽  
Computer Aided Process Planning ◽  
Feature Based ◽  
Definition Of ◽  
Feature Based Design ◽  
Interactive Feature

Abstract In this paper, interactive “constraint based feature definition” is used to drive both feature based design and feature recognition. At present, hardly any feature based CAD or CAPP system does offer adequate facilities to easily define application specific features. Feature definition by means of programming is an error prone and difficult task. The definition of new features has to be performed by domain experts in the fields of design and manufacturing. In general they will not be programming experts. This paper elaborates on interactive feature definition, aiming at facilitating the definition of features by non-programming experts. The interactive feature definition functionality is implemented in a re-design support system called FROOM. It supports feature based design. Feature definition is also used in a Computer Aided Process Planning system, called PART, for the definition of features to be recognized. Conceptual graphs are used as an aid in the definition of features and for the representation of the features. The conceptual graphs are automatically transformed into feature recognition algorithms. Degrees of freedom (DOF) analysis is used for support during feature definition and for solving geometric constraints related to the feature to be defined.

Research and Implementation on Automatical Adjustment Method of Design Feature Model

2012 ◽  
Vol 197 ◽  
pp. 750-754
Author(s):  
Yao Chen ◽  
Guo Yuan Zhang ◽  
Jun Chao Wei ◽  
Xiu Tian Yan ◽  
Miao He
Keyword(s):  
Feature Recognition ◽  
Design Feature ◽  
Feature Modeling ◽  
Feature Model ◽  
Concurrent Design ◽  
Machining Feature ◽  
Feature Based ◽  
Feature Based Design ◽  
Product Realization

Traditional engineering design and realization typically follows a sequential pattern as described by many research publications such as French, Pahl and Beitz. These design methodologies face challenges when time is essence in product realization lifecycle. In contrast, as the design process of a product evolves，this new method incrementally creates machining feature model and realizes concurrent design feature and machining feature modeling based on an algorithm developed for local feature recognition. In addition, the method accelerated the determination of the area that require to be recognized by utilizing a dynamic link list to record the changing information of topological elements, the design features of the model generated by the feature-based design, processing and feature recognition is generated through feature model.

Computer Aided Analysis of Composite Structural Elements

2014 ◽  
Vol 657 ◽  
pp. 765-769
Author(s):  
Michał Majzner ◽  
Andrzej Baier
Keyword(s):  
Finite Element ◽  
Design Feature ◽  
Feature Representation ◽  
Direct Result ◽  
Geometric Feature ◽  
Element Analysis ◽  
Functional Feature ◽  
Aggregation Of Information ◽  
Feature Based ◽  
Definition Of

The article presents a reflection on the definition of the feature, which enabled the development of feature-based method for modeling of composite structural components. The need for defining feature is a direct result of the ambiguity of statements or narrow definitions and their applications. So far are well developed feature, which are used in process design (CAD) - geometric feature, design feature and in the process of manufacturing (CAM) - Technology feature, and also focused on functionality (CAE - motion simulation) functional feature. The feature representation of a fully functioning feature-based system that does the aggregation of information about the structure of a construction object made from layered composites.. This approach is based on a single, independent feature representation that can be used for design, finite element analysis, technology process planning. The paper describes the main approach to the engineering analysis with the use of FEM and a convenient method of simplifying the geometry of the model and the composition of the composite. Also discussed are possible extensions to features to enhance the finite element meshing process.

Hybrid Feature Extraction for Machining Applications

1993 ◽  
Author(s):  
Malcolm C. Fields ◽  
D. C. Anderson
Keyword(s):  
Feature Extraction ◽  
Product Information ◽  
Design Feature ◽  
Boundary Representation ◽  
Feature Model ◽  
Solid Model ◽  
Feature Extraction Algorithm ◽  
Extraction Algorithm ◽  
Feature Based ◽  
Hybrid Feature Extraction

Abstract A hybrid feature extraction algorithm for extracting cavity features for machining applications is presented. The algorithm operates on both a feature-based solid model of a part and its corresponding boundary representation solid model. Information available from both part representations is used, offering a more robust and efficient solution for some of the critical limitations of current feature extraction algorithms, such as verification of completeness, computation of cavity volumes, and maintenance of design information. The hybrid feature extraction algorithm combines the strengths of feature-based design and feature extraction approaches to linking design and manufacturing. Starting with a feature-based model of a part consisting of volumetric design features combined with a stock shape using set operations, the algorithm transforms this model into a feature model containing only machinable cavity features. The transformation involves computations on both the set theoretic feature model and its corresponding boundary representation solid model, and deals with the complexities of feature-feature intersections and protrusions. By combining the higher-level product information contained in the design feature model with the topological and geometric information in the boundary representation model, the algorithm supplements traditional boundary representation extraction with non-geometric product information, enabling the verification of completeness, and significantly aiding the computation of the appropriate feature volumes.

Feature Based Approach for Casting Design

1990 ◽  
Author(s):  
Sisir K. Padhy ◽  
R. Sharan ◽  
S. N. Dwivedi
Keyword(s):  
Design Feature ◽  
Processing Parameters ◽  
Vital Role ◽  
Design Phase ◽  
Feeding System ◽  
Stage Design ◽  
Feature Based ◽  
Shape Complexity ◽  
Feature Based Design ◽  
Casting Design

Abstract The conceptual stage design is very crucial in a design phase because maximum flexibility lies in this stage. The product can be changed or redesigned to achieve the optimum blend of quality and cost. The factors that influence the design include: shape complexity factor of the product, material, and processing parameters. In the casting design, the shape-complexity factor plays a vital role in deciding the location of the gates and risers and hence in feeding system design. Feature based design is adopted for the evaluation of the shape complexity factor. The implementation of this design approach is also discussed.

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