Global Variables & Equations (SOLIDWORKS)
Named parameters and formulas that drive multiple dimensions or feature states from a single value source.
🔗 Related Concepts
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Definition
Global variables are user-defined names with values, accessible from the Equations dialog. Equations express relationships: D2@Sketch1 = D1@Sketch1 * 2 + 5, or D3@Sketch2 = "Length" - 10, where "Length" is a global variable.
Global variables and equations link multiple dimensions logically: change one input, and every downstream dimension updates consistently.
Why it matters
Equation-driven design replaces error-prone manual dimensioning with reliable relationships. For parametric families (where 50 parts share a design intent), equations are essential.
Common pitfalls
- Using equations where a single dimension and a pattern would be cleaner.
- Circular equation references — solver fails to converge.
- Hardcoding equation expressions instead of using named global variables — refactoring is painful.
SOLIDWORKS Ecosystem Context
This concept is a core structural element of the SOLIDWORKS drafting and engineering environment developed by Dassault Systèmes. Dassault Systèmes' mainstream parametric MCAD — feature-based modelling, assembly mates, and 2D drawings tightly coupled to the 3D model.
Relevant SOLIDWORKS FAQs
❓ Is SOLIDWORKS available on macOS?
Not natively. SOLIDWORKS is Windows-only. Mac users run it via Parallels, VMware Fusion, or Boot Camp (Intel Macs). On Apple Silicon, virtualisation is limited. The official cross-platform alternative from Dassault is the browser-based xDesign on 3DEXPERIENCE.
❓ What's the difference between SOLIDWORKS Standard, Professional, and Premium?
Standard is the core modelling + drawings package. Professional adds CAD Library, PhotoView 360 rendering, eDrawings Professional, Toolbox, advanced sheet metal. Premium adds Simulation, Routing (electrical/piping), ScanTo3D, Motion. Most production shops use Premium; education usually uses Premium-equivalent.
❓ What is 3DEXPERIENCE SOLIDWORKS vs. traditional SOLIDWORKS?
Traditional SOLIDWORKS is a desktop product, files saved to disk/network/PDM. 3DEXPERIENCE SOLIDWORKS is the same desktop product but cloud-connected: files saved to the 3DEXPERIENCE platform, license tied to a Platform identity, and access to companion cloud apps (3D Sculptor / xDesign, simulation, PLM).
⚡ Concept Self-Test
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🎓 Recommended Practice Lessons
Step-by-step practical exercises and certification-aligned paths chosen by our editors to master this concept:
SOLIDWORKS - Tutorial for Beginners in 13 MINUTES!
SOLIDWORKS 3D CAD Specialization (Coursera)
🌳 Semantic Crossroads & Navigation Pathways
Trunk-Branch-Leaf ModelExplore cross-referenced learning lanes. Connect this specific method back to macro CAD coordinate foundations, parent software environments, and sibling parameters in our shared taxonomy map.
Global Foundations
Core glossary, interactive graph, and domain-wide concept index.
Ecosystem Integration
Parent design environments and platforms implementing this method natively.
Active Context & Neighbors
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