MBSE (Model-Based Systems Engineering)
Model-Based Systems Engineering (MBSE) is the formalized application of modeling to support system requirements, design, analysis, verification, and validation throughout the development lifecycle. Where traditional systems engineering relies on documents, MBSE replaces documents with executable, interconnected models — typically authored in SysML or similar languages and managed in tools like Cameo, Rhapsody, or Codebeamer. MBSE is the engineering discipline; PLM provides the governance and configuration management that keeps the models authoritative across their lifecycle.
In context
Lockheed Martin applies MBSE on F-35 derivative programs using SysML in Cameo Systems Modeler — requirements, architecture blocks, interface definitions, and verification events are all connected in one model rather than scattered across Word documents and spreadsheets. When a structural requirement changes, the MBSE model immediately identifies which SysML blocks and linked simulation analyses are affected, driving a targeted re-verification campaign rather than a full program rescan.
Why it matters
Regulatory pressure in aerospace (DO-178C), defense (MIL-STD-882E), and automotive (ISO 26262) is pushing model-based approaches as evidence for certification. MBSE also shortens requirements-to-design traceability from weeks (document review) to hours (model query). PTC Codebeamer and Siemens Polarion are the dominant PLM-adjacent MBSE platforms; both are being extended to manage AI-generated design artifacts as well.
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External References
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Cite this definition
Finocchiaro, Michael. “MBSE (Model-Based Systems Engineering).” DemystifyingPLM PLM Glossary, 2026, https://www.demystifyingplm.com/glossary/mbse-model-based-systems-engineering