An integrated DFMA–PDM model for the design and analysis of challenging similar and dissimilar welds

Abstract

To permit effective adoption of concurrent engineering (CE) in the design of welded structures, a new model is proposed that integrates the design for manufacturing and assembly (DFMA) strategy with a product data management (PDM) system. To enable effective integration, a traditional DFMA procedure was adapted to comply with the requirements of welding as an independent design module. The PDM system was integrated to the DFMA as a database of welding processes, materials, consumables, standards and guidelines, as well as for storing and tracking changes in the weldment design. An application-based selection method was also introduced to further facilitate selection of the base material, welding process and filler metals. An application was developed as a proof of principle and tested with Arctic conditions as the nominated service environment. The generic nature of the model makes it applicable to many welding operations if relevant databases and guidelines are prepared. The proposed approach can also be used in conjunction with CAD applications and manufacturers' PDM software to enhance the design of weldments and expedite decision-making as its use by designers requires only minimum welding and metallurgy knowledge.