Classification of Simulation Models for the Model-based Design of Plastic-Metal Hybrid Joints

Laser-based hybrid joints (LBHJ) are promising due to low processing time and costs compared to conventional joining technologies. During the design of LBHJs, considering interactions between different domains (engineering, production, controlling) is required. This yields potential for a cross-domain design and optimization. However, considering the interactions is challenging and leads to iterations and inefficiency in product development. To map the interactions and exploit the potential of LBHJs, model-based systems engineering (MBSE) is a promising approach. With MBSE, domain models are integrated into a central system model and the model parameters are interconnected. To support a model-based design of LBHJs in the different phases of product development, usually several models are required. Therefore, multiple models in different fidelities for the same purpose exist (e.g. finite element and analytical models for joint strength estimation). Currently, this results in complex system models that are difficult to understand, reuse, extend, and maintain. The application of MBSE for the design of LBHJ is therefore inhibited. To overcome this deficit, the integration and linkage of domain models in the system model must be formally structured. Therefore, this paper presents a SysML metamodel, which classifies the domain models, defines their standardized structure and specifies their integration and linkage within the system model. The formal structuring is based on the classification criteria purpose. For each purpose, a superordinate model is built and connected to the domain models. To avoid complex system models that are vulnerable to changes, only superordinate domain models are linked with each other. Domain models can thus be easily replaced, without affecting the consistency of the system model. The results show that system models, built with this approach, can be easily created and used for the model-based design of LBHJs. Furthermore, interactions between the domains can be handled and efficiency in product development is increased.