Trade Studies in SysML v2 Projects

Trade Studies works as in LMLLifecycle Modeling Language An open modeling language with a small set of classes and relationships that covers a system's whole lifecycle. Holarch models are LML models. projects. The study, its decision and its criteria are Holarch items; the alternatives can be elements of the model, such as variant part definitions.

• Open Risk & Decisions → Trade Studies and click + New Trade Study.
• Under Alternatives, + Existing… lists the model's part definitions and usages (and Holarch items). + New creates a part definition and its part.
• Pull Values from Model fills each cell from the alternative's attribute with the criterion's name, evaluated by the model and converted to the criterion's units (Top Speed reads topSpeed). Without such an attribute it takes the roll-up of that quantity over the alternative's parts, as on the Budget tab.
• Weights, scoring methods, the Pugh matrix, sensitivity and Record Decision… work as in LML projects. The links to alternatives point to the elements themselves, so they stay when an element is renamed.