SimScale puts an engineering AI agent inside Onshape CAD

SimScale launched an Engineering AI Agent that runs inside PTC’s Onshape cloud CAD, available through the Onshape App Store and announced at IMTS 2026 in Chicago. From a single prompt, the company says the agent can propose a simulation setup, prepare CAD geometry, run physics (CFD, thermal, electromagnetic, FEA), and explain results in plain engineering language — without handing the job to a specialist or leaving Onshape.

SOFTWARE desk — same-day company primary that moves validation-grade physics simulation into the CAD moment via an agent, shrinking the handoff between designers and simulation specialists.

Delivery, company: the agent is an integrated app through the Onshape App Store. Onshape users need to enable it before it appears in their workspace, the same way any other Onshape app is accessed.

Workflow, still company: from a single prompt the agent reasons through the full simulation workflow — proposing a setup, preparing CAD geometry that has not yet been cleaned up for simulation, meshing the geometry, running the physics, and interpreting the results in plain engineering language — without the engineer leaving Onshape or handing the job to a specialist. The engineer can step in at any point to adjust a setup, override a boundary condition, or review assumptions before handing control back.

Physics covered, company: the same CFD, thermal, electromagnetic (Emag), and FEA capability used for validation-grade simulation elsewhere on SimScale. CFD means computational fluid dynamics — how air and liquids flow. FEA means finite element analysis — stress and structure. Emag means electromagnetic. Simulation here means testing a design with physics math before building a physical prototype. “Validation-grade” is SimScale’s wording for the physics it already sells, not an independent certification this desk ran.

Agent API, still company: the agent runs on the SimScale Agent API, which the company says keeps every run auditable, keeps data under the customer’s existing governance, and provisions compute automatically.

Scale claim and customer anecdote — company-attributed, not independent Bad Signal audits: the reasoning layer sits on a platform already used by more than 900,000 engineers. Withings is cited as cutting its design-to-prototype cycle 7x by moving simulation earlier.

Named voices on the company page: Jon Wilde, VP Product, SimScale; and Greg Brown, VP of Product at Onshape by PTC. Their quotes are color only and stay in Sources. Brown’s line is Onshape / PTC via the SimScale release — not a separate PTC newsroom primary.

About-box context, optional and company-attributed: SimScale calls itself the AI-native cloud platform for engineering simulation and says it is trusted by more than 900,000 users. PTC is named as a global software company headquartered in Boston that employs over 7,000 people and supports more than 30,000 customers. None was printed.

Plain English for the rest of the card: CAD = computer-aided design, the 3D model. CFD = computational fluid dynamics, how air and liquids flow. FEA = finite element analysis, stress and structure. simulation = testing a design with physics math before building a physical prototype. agent = AI that can run multi-step tool workflows, not just chat. App Store here = Onshape’s in-product app catalog, not Apple’s.