Key assembly structure identification in complex mechanical assembly based on multi-source information

Han, Zhoupeng; Mo, Rong; Chang, Zhiyong; Li, Hao; Niu, Weilong

doi:10.1108/aa-09-2016-121

Cited by 11 publications

(15 citation statements)

References 19 publications

(18 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The common design structure appears frequently in many assembly models and is equipped with certain functions. Han et al (2017) identified key function part and key assembly structure in complex assembly model by considering assembly topology and multi-source attributes information, where complex network is used to evaluate importance of assembled parts. The common design structure and key assembly structure are very significant design structure information for assembly model in model repository, which should be labeled with some functional semantics.…”

Section: Literature Reviewmentioning

confidence: 99%

“…Where, P is a set of nodes representing assembled parts, L is a set of edges representing connection relationships between parts, A(P) is a set of attributes of the nodes containing mainly multiple attributes of parts, and A(L) is a set of attributes of the edges containing at least assembly features and assembly constraints information. To analyze conveniently structurefunction for CAD assembly model, assembled parts are classified into two categories: connector and function part (Han et al, 2017). An example of mechanical CAD assembly is shown in Figure 4.…”

Section: Structure-function Correlations Analysis and Functional Semantic Annotationmentioning

confidence: 99%

See 1 more Smart Citation

Structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model

Han

Yang

et al. 2019

Self Cite

View full text Add to dashboard Cite

PurposeThree-dimensional computer-aided design (CAD) assembly model has become important resource for design reuse in enterprises, which implicates plenty of design intent, assembly intent, design experience knowledge and functional structures. To acquire quickly CAD assembly models associated with specific functions by using product function requirement information in the product conceptual design phase for model reuse, this paper aims to find an approach for structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model before functional semantic-based assembly retrieval.Design/methodology/approachAn approach for structure-function correlations analysis and functional semantic annotation of CAD assembly model is proposed. First, the product knowledge model is constructed based on ontology including design knowledge and function knowledge. Then, CAD assembly model is represented by part attributed adjacency graph and partitioned into multiple functional regions. Assembly region and flow-activity region are defined for structure-function correlations analysis of CAD assembly model. Meanwhile, the extraction process of assembly region and flow-activity region is given in detail. Furthermore, structure-function correlations analysis and functional semantic annotation are achieved by considering comprehensively assembly structure and assembled part shape structure in CAD assembly model. After that, a structure-function relation model is established based on polychromatic sets for expressing explicitly and formally relationships between functional structures, assembled parts and functional semantics.FindingsThe correlation between structure and function is analyzed effectively, and functional semantics corresponding to structures in CAD assembly model are labeled. Additionally, the relationships between functional structures, assembled parts and functional semantics can be described explicitly and formally.Practical implicationsThe approach can be used to help designers accomplish functional semantic annotation of CAD assembly models in model repository, which provides support for functional semantic-based CAD assembly retrieval in the product conceptual design phase. These assembly models can be reused for product structure design and assembly process design.Originality/valueThe paper proposes a novel approach for structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model. Functional structures in assembly model are extracted and analyzed from the point of view of assembly structure and function part structure. Furthermore, the correlation relation between structures, assembled parts and functional semantics is expressed explicitly and formally based on polychromatic sets.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Section: Structure-function Correlations Analysis and Functional Semantic Annotationmentioning

confidence: 99%

Structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model

Han

Yang

et al. 2019

Self Cite

View full text Add to dashboard Cite

show abstract

“…Taking the geared oil pump shown in Fig.1 as an example. According to the method proposed by Han et al (2017Han et al ( ,2018, the key functional parts are selected according to the comprehensive importance of the parts topological information and the multi-source attribute information. The former includes degree, density, and number of parts.…”

Section: Recognition Of Key Functional Partsmentioning

confidence: 99%

“…According to the identification method proposed by Han et al(2017), assembly model is represented based on complex network, which is map to an attributed adjacency graph. Extracting and computing the topological information (degree centrality, closeness centrality and betweenness centrality) and multi-source attributes of parts, taking use of a two-level evaluation model to evaluate importance of parts assembled, and the key function parts in assembly can be obtained by sorting result.…”

Section: The Descriptor Of Assembly Modelmentioning

confidence: 99%

See 1 more Smart Citation

Functional semantics annotation of assembly model using the fusion of bag of relationships model and spectral technology

Han

et al. 2019

JAMDSM

Self Cite

View full text Add to dashboard Cite

1In the product design stage, a large number of 3D CAD models are accumulated. This has led enterprises to pay increasing attention to the effective management and reuse of model resources in order to improve design efficiency and shorten the product life cycle. However, in the process of resource reuse, low efficiency is caused by the complexity of the assembly model structure, the designer's personal knowledge or inexperience, or unclear model function annotation. In addition, the high cost, the strong subjective nature, and the incompleteness of manual annotation affect the accuracy of model labeling, which decreases retrieval efficiency. To solve this problem, the automatic labeling of the model function has been a concern.The automated annotation process uses the labeled models in a library to obtain the semantic information of an unknown model through a similarity comparison. Zhang et al(2001) have proposed the active learning mechanism, which generates the semantic annotation of the model according to the geometric similarity with other models. Similar methods include the support vector machine (Ip and Regli,2005;Wang et al.,2011) and the Bayesian recursive learning mechanism (Barutcuoglu and DeCoro,2006). Leifman et al (2005) used relevant feedback technology to record user intention during the model retrieval process, which alleviates the gap between geometry and semantics of the model to a certain extent. Zhang et al (2010) and Li et al (2013) presented the automatic labeling method, which uses the multiscale feature extraction method based on an attributed adjacency graph (AAG) and the local shape distribution histogram to obtain the shape information of the CAD model and calculate the shape similarity between different models. According to the known semantic classification information of the model in a sample database, a probabilistic annotation framework is constructed to make semantic annotation of the CAD model in order to establish a relationship AbstractIncreasing attention has been paid to the effective management and reuse of CAD model resources. Aiming at the problems of low efficiency of model reuse and poor accuracy in the function labeling process of assembly models, this paper presents an effective probability-based model labeling strategy for complex assemblies. It is a proper method to realize automatic labeling of assembly functional semantics through active learning. Different from part model retrieval, an assembly model is described through graph theory and a bag-of-relationships model. The assembly relationships of assembly model and the information of key functional parts are considered synthetically. Then a two-tiered model retrieval mechanism is constructed to reduce the computation time cost and improve retrieval efficiency. Further, the concept of functional ontology is introduced to establish the normalized expression of the key functional semantics of the assembly model. The functional semantic annotation of the key parts of the CAD assembly model is carried out through a prob...

show abstract

CAD assembly model retrieval based on multi-source semantics information and weighted bipartite graph

Han

Yang

et al. 2018

Computers in Industry

View full text Add to dashboard Cite

Key assembly structure identification in complex mechanical assembly based on multi-source information

Cited by 11 publications

References 19 publications

Structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model

Structure-function correlations analysis and functional semantic annotation of mechanical CAD assembly model

Functional semantics annotation of assembly model using the fusion of bag of relationships model and spectral technology

CAD assembly model retrieval based on multi-source semantics information and weighted bipartite graph

Contact Info

Product

Resources

About