Assembly modeling in an attribute-based design description system

Assembly modeling allows the end user to combine parts in the assembly using the relationships between the parts and features. Traditional computer-aided design (CAD) systems are not able to manage assembly information completely and require considerable and inconvenient end user interaction. These systems have many drawbacks such as lack of flexible design and lack of good user interface. These systems are not utilizing the concurrent or life-cycle engineering approach.;The attribute-based design description system (ADDS) is a feature-based system that has avoided traditional drawbacks. The objective of this research is to enhance the ADDS tool so that it also overcomes the drawbacks in traditional CAD assembly modeling systems and is able to export designs into standard CAD systems. The end result will be a modified ADDS that can support assembly definition and export the assembly into a standard CAD system for further assembly analysis and embodiment design.;This modified ADDS system is verified using the standard testing techniques and all the errors in this process are completely eliminated. ADDS is validated using the validation method developed in this research by describing three different design examples in power transmission systems in both ADDS and exported to AutoCAD.