Integration of SysML models in a 3D environment for Virtual Testing and Validation

Abstract

Model–Driven Systems Engineering has been presented as a promising approach for developing complex systems. To address the complexity of systems, it is necessary to ensure that knowledge is transferred properly between projects, teams, and engineers. To avoid specification omissions and misinterpretations to surface in projects, clear communication is needed during the system’s development. The introduction of SysML and systems modeling was intended to improve the communication of design intent among stakeholders and engineers. System models have multiple diagrams that are all interconnected and interrelated, such that they represent a consistent view of a system. To comprehend the structure and the behavior of a complex system, proper visualization of the SysML models is needed. There are mature commercial tools that offers support to SysML modeling, and forming the major platforms for developing the SysML models. However, the current SysML modeling tools use 2-dimensional views to visualize the models, which limits the comprehension of a complex system. To overcome this limitation, the SysML models have to integrate into a 3D virtual environment. In this paper, we present the first step towards this solution by introducing the architecture and the implementation of a conversion layer, that converts a SysML model to a 3D representation. To validate the conversion layer a prototype is presented, which converts a SysML model developed with IBM Rhapsody into a 3D representation in the Unity Game Engine. The performed test showed that the complexity of the models can be comprehended more efficiently in 3D than in a 2D environment. Moreover, visualizing the SysML models in 3D offers a better understanding and insight into the structure and the behavior of a system. Coupling the 3D representation of the SysML models with the 3D CAD representation of the modeled system, as in the Digital Twin case, offers new ways of capturing the design of a complex system.