Development of CAD Model Annotation System Based on Design Intent

2017 ◽  
Vol 863 ◽  
pp. 368-372
Author(s):  
Qin Yi Ma ◽  
Li Hua Song ◽  
Da Peng Xie ◽  
Mao Jun Zhou
Keyword(s):  
Product Design ◽  
3D Model ◽  
Adaptive Design ◽  
Design Knowledge ◽  
Cad Model ◽  
Design Intent ◽  
Design Information ◽  
Annotation System ◽  
Modeling Analysis ◽  
Model Annotation

Most of the product design on the market is variant design or adaptive design, which need to reuse existing product design knowledge. A key aspect of reusing existing CAD model is correctly define and understand the design intents behind of existing CAD model, and this paper introduces a CAD model annotation system based on design intent. Design intents contained all design information of entire life cycle from modeling, analysis to manufacturing are marked onto the CAD model using PMI module in UG to improve the readability of the CAD model. Second, given the problems such as management difficulties, no filter and retrieval functions, this paper proposes an annotation manager system based on UG redevelopment by filtration, retrieval, grouping and other functions to reduce clutter on the 3D annotations and be convenient for users to view needed all kinds of annotations. Finally, design information is represented both internally within the 3D model and externally on a XML file.

scholarly journals Explicit Communication of Geometric Design Intent in CAD: Evaluating Annotated Models in the Context of Reusability

2014 ◽  
Author(s):  
Jorge Camba ◽  
Manuel Contero ◽  
Jeffrey Otey ◽  
Pedro Company
Keyword(s):  
Geometric Design ◽  
Design Knowledge ◽  
Cad Model ◽  
User Performance ◽  
Direct Manipulation ◽  
Design Decisions ◽  
Design Intent ◽  
Design Information ◽  
Improve Design ◽  
Explicit Communication

CAD model reusability is largely determined by a proper communication of design intent, which is usually expressed implicitly within the model. Recent studies have suggested the use of 3D annotations as a method to embed design information in the model’s geometry and make part of the design knowledge explicitly available. In this paper, we evaluate the effectiveness of this method and analyze its impact in model alteration tasks. Our goal is to determine whether annotated models provide significant benefits when performing activities that require a direct manipulation of the geometry. We present the results of a study that measured user performance in two scenarios. First, we tested whether annotations are helpful when inadequate modeling assumptions can be made by designers. Second, we evaluated annotations as tools to communicate design decisions to select the most appropriate solution to a challenge when multiple options are available. In both cases, results show statistically significant benefits of annotated models, suggesting the use of this technique as a valuable approach to improve design intent communication.

CAD Model Reuse Based on the Integrate Design History

2013 ◽  
Vol 423-426 ◽  
pp. 1898-1901
Author(s):  
Ying Jie Wu ◽  
Qi Gao ◽  
Gang Liu ◽  
Xue Ji
Keyword(s):  
Product Design ◽  
Prototype System ◽  
Cad Model ◽  
Design History ◽  
Model Reuse ◽  
Design Information ◽  
Modeling Process ◽  
Design Guide ◽  
Incomplete Design ◽  
Integrate Design

A CAD model cannot be reused efficiently because of its incomplete design information. To solve this problem, a CAD model reuse method based on the IDH (Integrate Design History) is presented. IDH is defined as full record of modeling process and related knowledge, an extended CAD model is built as the carrier of the IDH. Based on the extended CAD model, a model reuse method is proposed by taking advantage of product design guide technology. Finally, a prototype system is developed and verifies the efficiency and feasibility of this method.

Personalized Product Design Knowledge Acquisition Based on Knowledge Reduction and Knowledge Mining

2015 ◽  
Vol 738-739 ◽  
pp. 275-280
Author(s):  
Er Tian Hua ◽  
Da Qiang Chen ◽  
Xiao Juan Gong ◽  
Lei Hu ◽  
Yan Zhen He ◽  
...  
Keyword(s):  
Knowledge Acquisition ◽  
Product Design ◽  
Customer Segmentation ◽  
Decision Table ◽  
Design Knowledge ◽  
Knowledge Mining ◽  
Knowledge Reduction ◽  
Design Information ◽  
Customer Group ◽  
Decision Variables

This paper makes the historical data which customers bought the products as the foundation, and suggests a method of personalized product design knowledge acquisition based on knowledge reduction and knowledge mining. Firstly, the core matrices of each specific customer group were taken as the decision variables of the decision table based on the key customer segmentation. Secondly, the knowledge reduction algorithm of Skowron discernibility matrix was use to acquire the product design information by reducing the decision table, and deleting the redundant and even product matrices that are not necessary. Thirdly, the product design information was taken as the initial data of knowledge mining, and the product design knowledge of specific customer group was obtained by a classification consistency algorithm. Finally, the stroller experimental design was taken as a case study by online interaction based on Web technology, and the conclusion of the study showed that the method was feasible.

3D Model Annotation as a Tool for Improving Design Intent Communication: A Case Study on its Impact in the Engineering Change Process

2012 ◽  
Author(s):  
Gerardo Alducin-Quintero ◽  
Alejandro Rojo ◽  
Francisco Plata ◽  
Arturo Hernández ◽  
Manuel Contero
Keyword(s):  
New Product Development ◽  
Change Process ◽  
3D Model ◽  
Product Development Process ◽  
Cad Model ◽  
Design Intent ◽  
Engineering Change ◽  
Engineering Changes ◽  
Modeling Strategy ◽  
The Impact

This paper analyzes the impact of 3D model annotations on CAD user productivity in the context of the New Product Development Process. These annotations can provide valuable information to support an improved design intent communication. Comparably, they can play the same role as source code comments to support code maintainability in software engineering. A 3D CAD model is a geometry representation and it also stores the modeling strategy used to build it. Alteration of a complex CAD model usually represents a time consuming task due to the lack of an explicit explanation of the design rationale followed to build that 3D model. An experimental study conducted with Spanish and Mexican CAD students indicates that it is possible to reduce the time needed to perform engineering changes in existing models by between 13–26% by using annotations. Also some factors that affect the impact of annotations on the engineering change process such as part and alteration complexity were identified.

scholarly journals Product family design knowledge representation, aggregation, reuse, and analysis

2007 ◽  
Vol 21 (2) ◽  
pp. 173-192 ◽  
Author(s):  
JYOTIRMAYA NANDA ◽  
HENRI J. THEVENOT ◽  
TIMOTHY W. SIMPSON ◽  
ROBERT B. STONE ◽  
MATT BOHM ◽  
...  
Keyword(s):  
Knowledge Management ◽  
Product Design ◽  
Product Family ◽  
Database Schema ◽  
Design Knowledge ◽  
Formal Concept ◽  
Product Family Design ◽  
Product Families ◽  
Management Framework ◽  
Design Information

A flexible information model for systematic development and deployment of product families during all phases of the product realization process is crucial for product-oriented organizations. In current practice, information captured while designing products in a family is often incomplete, unstructured, and is mostly proprietary in nature, making it difficult to index, search, refine, reuse, distribute, browse, aggregate, and analyze knowledge across heterogeneous organizational information systems. To this end, we propose a flexible knowledge management framework to capture, reorganize, and convert both linguistic and parametric product family design information into a unified network, which is called a networked bill of material (NBOM) using formal concept analysis (FCA); encode the NBOM as a cyclic, labeled graph using the Web Ontology Language (OWL) that designers can use to explore, search, and aggregate design information across different phases of product design as well as across multiple products in a product family; and analyze the set of products in a product family based on both linguistic and parametric information. As part of the knowledge management framework, a PostgreSQL database schema has been formulated to serve as a central design repository of product design knowledge, capable of housing the instances of the NBOM. Ontologies encoding the NBOM are utilized as a metalayer in the database schema to connect the design artifacts as part of a graph structure. Representing product families by preconceived common ontologies shows promise in promoting component sharing, and assisting designers search, explore, and analyze linguistic and parametric product family design information. An example involving a family of seven one-time-use cameras with different functions that satisfy a variety of customer needs is presented to demonstrate the implementation of the proposed framework.

Personalized knowledge push system based on design intent and user interest

2015 ◽  
Vol 230 (11) ◽  
pp. 1757-1772 ◽  
Author(s):  
Zhan-Song Wang ◽  
Ling Tian ◽  
Yuan-Hao Wu ◽  
Bei-Bei Liu
Keyword(s):  
Knowledge Acquisition ◽  
Conceptual Design ◽  
Current Knowledge ◽  
Target Function ◽  
Design Knowledge ◽  
Prototype System ◽  
Sorting Algorithm ◽  
Illustrative Case ◽  
User Interest ◽  
Design Intent

Existing knowledge provides important reference for designers in mechanical design activities. However, current knowledge acquisition methods based on information retrieval have the problem of inefficiency and low precision, which mainly meet the requirement for knowledge coverage. To improve the efficiency of knowledge acquisition and ensure the availability of design knowledge, this paper proposes a knowledge push service method based on design intent and user interest. First, the design intent model, which is mainly the formal expression of the target function of conceptual design, is built. Second, the user interest model that consists of domain themes and operation logs is built, and an automatic updating method of user interest is proposed. Third, a matching method of design knowledge based on design intent, and a sorting algorithm of knowledge candidates based on user interest are proposed to realize personalized knowledge active push service. Finally, a prototype system called Personalized Knowledge Push System for Mechanical Conceptual Design (MCD-PKPS) is implemented. An illustrative case demonstrates that the proposed method can successfully improve the efficiency and availability of knowledge acquisition.

Environmental Analysis of Consumer Products During the Conceptual Phase of Product Design

2010 ◽  
Author(s):  
Matt R. Bohm ◽  
Karl R. Haapala ◽  
Kerry Poppa ◽  
Robert B. Stone ◽  
Irem Y. Tumer
Keyword(s):  
Life Cycle ◽  
Product Design ◽  
Environmental Impacts ◽  
Life Cycle Analysis ◽  
Real Life ◽  
Consumer Products ◽  
Design Knowledge ◽  
Concept Generation ◽  
Analysis Techniques ◽  
Research Show

This paper describes efforts taken to further transition life cycle analysis techniques from the latter, more detailed phases of design, to the early-on conceptual phase of product development. By using modern design methodologies such as automated concept generation and an archive of product design knowledge, known as the Design Repository, virtual concepts are created and specified. Streamlined life cycle analysis techniques are then used to determine the environmental impacts of the virtual concepts. As a means to benchmark the virtual results, analogous real-life products that have functional and component similarities are identified. The identified products are then scrutinized to determine their material composition and manufacturing attributes in order to perform an additional round of life cycle analysis for the actual products. The results of this research show that enough information exists within the conceptual phase of design (utilizing the Design Repository) to reasonably predict the relative environmental impacts of actual products based on virtual concepts.

The structure of the modules of the search system by geometric shape based on the repeated use of design knowledge

2021 ◽  
pp. 8-11
Author(s):  
Keyword(s):  
3D Model ◽  
Geometric Shape ◽  
Design Knowledge ◽  
Class Diagram ◽  
Geometric Form ◽  
Search System ◽  
Knowledge Component ◽  
Hu Moments ◽  
Repeated Use

The development of a diagram of the components of a search system by geometric form and a class diagram of obtaining design knowledge using Hu-moments is considered. Keywords: 3D model, PLM, Hu-moments, design knowledge, component diagram. [email protected]

A Novel Application of Gamification for Collecting High-Level Design Information

2015 ◽  
Author(s):  
Hyunmin Cheong ◽  
Wei Li ◽  
Francesco Iorio
Keyword(s):  
User Study ◽  
Design Knowledge ◽  
Cad Systems ◽  
Design Information ◽  
Knowledge Based ◽  
Game Mechanics ◽  
Abstract Level ◽  
Level Problem ◽  
Level Design ◽  
High Level

This paper presents a novel application of gamification for collecting high-level design descriptions of objects. High-level design descriptions entail not only superficial characteristics of an object, but also function, behavior, and requirement information of the object. Such information is difficult to obtain with traditional data mining techniques. For acquisition of high-level design information, we investigated a multiplayer game, “Who is the Pretender?” in an offline context. Through a user study, we demonstrate that the game offers a more fun, enjoyable, and engaging experience for providing descriptions of objects than simply asking people to list them. We also show that the game elicits more high-level, problem-oriented requirement descriptions and less low-level, solution-oriented structure descriptions due to the unique game mechanics that encourage players to describe objects at an abstract level. Finally, we present how crowdsourcing can be used to generate game content that facilitates the gameplay. Our work contributes towards acquiring high-level design knowledge that is essential for developing knowledge-based CAD systems.

Sign in / Sign up

Export Citation Format

Share Document