Container spaces and functional features for top-down 3D layout design

Lyu

Advances in Mechanical Engineering

et al. 2016

Generally, there are two alternative design approaches available to engineers: bottom-up and top-down. Considering the sharp increase in the complexity of most mechanical products, the top-down design approach is more widely adopted in the development of complex products. However, in traditional top-down design process, design parameters are communicated through single-skeleton models, and design units are strongly coupled due to the multi-dimensional complexity of products. Toward this end, a new top-down design approach based on multi-skeleton model is proposed in this article. First, in accordance with different kinds of design parameters, three major skeleton models are defined, including location skeleton model, published skeleton model, and design skeleton model. And the characteristics of multi-skeleton models are also described. Then, the top-down design process based on the multi-skeleton model is explored, especially in the multi-skeleton modeling phase. It is also illustrated in detail that how to realize design parameter transmission and design unit reuse. Subsequently, it elaborates the communicating way and structure optimization of design parameters to support parameters controlled publishing and design units reuse. Finally, a meteorological satellite and a crawler crane design cases are implemented to expound the feasibility and effectiveness of the proposed framework.

Section: Published Skeleton Model (Ps)mentioning

confidence: 91%

Multi-skeleton model for top-down design of complex products

Lyu

Advances in Mechanical Engineering

et al. 2016

Int J Adv Manuf Technol

“…For Van Holland and Bronsvoort [51], the connection feature includes information on the involved form feature types, the final position of the connected components with respect to each other and the internal freedom of motion. Csabai et al [52] consider a connection feature as a form feature that is attached to an interface feature of a design space. Guangming et al [45] view a connector feature both as a functional element and a design feature during the conceptual design phase.…”

Section: Configuration Featuresmentioning

confidence: 99%

A grammar approach for combining product configuration modelling with behavioural aspects and simulations

Ostrosi

Haxhiaj

et al. 2011

The effective modelling of configurable products must handle the complex problem of representation of the configurable products, learning new configurable products and analysis of their behaviour. However, currently in advanced CAD systems, there exists no systematic and effective method for designing configurations and integrating behavioural aspects and simulations. This paper proposes and develops a grammar-based design approach to support both the computer-aided design for configuration and computing in CAD systems. Two interrelated questions are taken into account: (1) What are the hypothesis, properties and features for product configuration? (2) How can the product based on configuration features be represented and how can the configuration representation method integrate the numerical computing in design? This approach, under the guide of the proposed formal modelling, is implemented in computers. A design case study illustrates the proposed approach.

“…However, for top-down design processes, relations between parts may need to be specified while the detailed part geometry is still incomplete (Ma et al 2007). These relations can be defined as assembly features and used to assign responsibilities in collaborative design (Shyamsundar and Gadh 2001;Csabai et al 2002). The possibility of using assembly features to represent design intent is mentioned in Deneux (1999).…”

Section: Assembly Design Featuresmentioning

confidence: 99%

Paradigm shift: unified and associative feature-based concurrent and collaborative engineering

Chen

Thimm

2008

J Intell Manuf

With widely used concurrent and collaborative engineering technologies, the validity and consistency of product information become important. In order to establish the state of the art, this paper reviews emerging concurrent and collaborative engineering approaches and emphasizes on the integration of different application systems across product life cycle management (PLM) stages. It is revealed that checking product information validity is difficult for the current computer-aided systems because engineering intent is at best partially represented in product models. It is also not easy to maintain the consistency among related product models because information associations are not established. The purpose of this review is to identify and analyze research issues with respect to information integration and sharing for future concurrent and collaborative engineering. A new paradigm of research from the angle of feature unification and association for product modeling and manufacturing is subsequently proposed.Keywords Concurrent and collaborative engineering · Feature-based design and manufacturing · Product life cycle modeling · Information validity and consistency