SOLIDWORKS Simulation

🔗 Related Concepts

Deepen your understanding with these related topics:

Definition

Simulation runs finite element analysis on SOLIDWORKS parts or assemblies. Standard / Professional / Premium tiers add solvers progressively: linear static is in Standard; modal, thermal, buckling, fatigue in Professional; nonlinear, dynamic, drop test, plastic in Premium. Loads and fixtures apply directly to the model geometry; mesh is generated automatically and refinable manually.

Why it matters

Sizing decisions (wall thickness, rib placement, fastener count) become defensible when backed by FEA. Without simulation, those decisions rely on hand calcs or rule-of-thumb.

Technical Deep Dive & Core Mechanics

The parametric kernel resolves SOLIDWORKS Simulation by replaying a sequential feature history—each feature in the tree is a recorded operation (extrude, revolve, fillet, pattern) with input references to sketch geometry, datum planes, or existing feature faces. When a parameter changes, the kernel re-evaluates the tree from the modified feature downward, regenerating each dependent feature in order. This replay-based approach means that the order of features in the tree is semantically significant: reordering features can produce different geometry even with identical parameters.

Reference stability is the central challenge in SOLIDWORKS Simulation. Sketch constraints and feature inputs bind to specific topological entities (faces, edges, vertices) using internal identifiers. When an upstream feature changes topology—for example, a fillet that previously produced one face now produces two after a radius change—downstream references to SOLIDWORKS Simulation may lose their binding, producing "dangling reference" or "rebuild error" warnings. Sound modeling practice for SOLIDWORKS Simulation requires referencing stable entities (origin planes, datum features, named selections) rather than transient topology.

Step-by-Step Professional Implementation

Deploying SOLIDWORKS Simulation in a mechanical or product-design production pipeline requires well-tested modeling discipline and data management:

1. Set Up the Part/Assembly Template: Start from a company-standard template that pre-configures units, material libraries, default tolerances, and drawing sheet formats. Ensure the design intent is captured through a clean feature tree from the first sketch.
2. Apply Parametric Constraints Methodically: When building SOLIDWORKS Simulation, constrain sketches fully before extruding. Reference stable datum planes and origin geometry rather than edge references that may shift during design changes (avoiding dangling references).
3. Enrich Metadata for Manufacturing: Populate custom properties (material, finish, heat treatment, part number) in the model's iProperties, custom attributes, or parameters. These feed directly into BOMs, PDM systems, and ERP integrations.
4. Validate and Release: Run interference detection on assemblies, verify mass properties, and check for rebuild errors or suppressed features. Pass the model through your PDM/PLM check-in workflow with appropriate revision and lifecycle state updates.

Advanced Troubleshooting & Error Diagnostics

Resolution guide for common SOLIDWORKS Simulation issues in parametric modeling environments:

• Rebuild errors after feature reorder: Moving a feature earlier in the tree causes SOLIDWORKS Simulation to fail with "dangling reference" errors. Resolution: Before reordering, inspect the feature's parent-child relationships (right-click > Parent/Child). Ensure that all referenced geometry (faces, edges, planes) exists at the new position in the tree. Use origin planes and datum features as references instead of model faces to reduce reorder sensitivity.
• Fillet or chamfer failure on complex geometry: Applying a fillet to edges created by SOLIDWORKS Simulation produces "failed to create fillet" errors. Resolution: Check for tangent edges, very short edges, or edges where the fillet radius exceeds the available face width. Try reducing the radius or splitting the fillet into multiple smaller operations. Some kernels handle variable-radius fillets more robustly than constant-radius fillets for complex edge chains.
• Assembly interference not detected: Components overlap but the interference check reports no conflicts. Resolution: Verify that all components are fully resolved (not lightweight or suppressed). Check that the interference check settings include the correct component pairs. Surface bodies and reference geometry are typically excluded from interference checks—ensure the overlapping bodies are solid bodies.

Cross-Discipline Collaboration & Handoff

In multi-discipline product development, SOLIDWORKS Simulation must integrate smoothly with downstream manufacturing, simulation, and documentation workflows:

• Neutral Format Exchange: Export to STEP AP214/AP242 for maximum fidelity when sharing with partners who use different CAD platforms. Validate that feature topology, PMI (tolerances, datums, surface finish), and assembly structure survive the translation. Avoid relying on native formats for external suppliers.
• PDM/PLM Integration: Check in models through the product data management system with complete metadata (revision, lifecycle state, effectivity). Ensure that the BOM structure visible in the PLM matches the CAD assembly hierarchy, and that released parts are locked from unauthorized edits.
• Simulation and Manufacturing Handoff: Provide defeatured geometry to FEA analysts (remove cosmetic rounds, simplify internal cavities) and manufacturing-ready geometry to CAM programmers (with GD&T annotations). Coordinate on material specifications and tolerance stack-ups across the design-to-production chain.

Common pitfalls

• Trusting first-cut results without checking mesh convergence.
• Applying boundary conditions that produce stress concentrations that don't exist physically.
• Mixing linear static results with intuition about nonlinear failure modes.

Relevant SOLIDWORKS FAQs

Direct answers from our technical editorial desk concerning related workflows.

🎓 Recommended Practice Lessons

Step-by-step practical exercises and certification-aligned paths chosen by our editors to master this concept:

Practical Workflow Tips

Principles refined through years of parametric modeling and SOLIDWORKS Simulation workflows:

• Sketch fully before constraining: Draw the complete sketch profile before adding dimensions and constraints. This prevents over-constrained situations that require deleting and re-adding constraints.
• Reference origin planes, not model faces: When positioning SOLIDWORKS Simulation features, reference origin planes or datum planes rather than model faces. Origin planes never change topology.
• Name features in the tree: Rename each feature from its default name to a descriptive name. In complex models with 200+ features, named features save minutes per search and make design intent readable.
• Use configurations for variants: Rather than creating separate files for SOLIDWORKS Simulation size variants, use configurations or design tables. This keeps all variants linked to a single master definition.

Sources & further reading

• Dassault Systèmes Support & Documentation portal · Dassault Systèmes