A SysML-driven co-design platform applying an MBSE-PDM integration framework and cross-stage change propagation method

The co-design of complex system products, such as aero-engines, requires an integrated design environment that supports diverse modeling and management capabilities. This includes formal system modeling functions and data management functions, and the ability to evaluate the impact of design modifications to facilitate collaborative changes. This paper presents a SysML-driven co-design platform that integrates Model-Based Systems Engineering (MBSE) and Product Data Management (PDM) within a unified framework, along with a change propagation method applicable across multiple design stages. This paper introduces the concept of Co-design Session (CS), which establishes a data management framework aligned with the SysML-based system model. It manages data storage and interaction based on MBSE results, facilitating MBSE-PDM integration. Additionally, an ontology-based SysML model change propagation method is developed to manage early-stage design modifications, followed by an ontology model for design variables and constraints to support later-stage changes. Finally, a co-design platform is implemented, supporting SysML-based modeling, simulation, CAD visualization, and the proposed methods. The effectiveness of the proposed approach and platform is validated through a case study on the design of a High-flow Dual Variable Cycle Engine (HDVCE), demonstrating its capability to enhance data consistency, traceability, and multi-team co-design.