Chassis Dynamics Analysis Assistant
Translate chassis requirements into suspension specs and diagnose dynamics issues
What You Can Do
This skill helps you systematically analyze suspension systems, structural loads, and dynamic behavior before running expensive simulations. You can translate performance requirements into actionable suspension geometry targets, predict stress concentration points and load paths, diagnose NVH failures using structured failure mode analysis, and validate damping strategies against durability constraints. It accelerates the planning phase, interprets simulation results, and builds defensible engineering rationale for design decisions.
Features
Convert ride/handling requirements (body roll stiffness, natural frequency, anti-dive angles) into specific suspension geometry targets (roll center height, instant center location, compliance values)
Identify primary and secondary load paths through the chassis structure and predict stress concentration points before FEA analysis
Use structured failure mode analysis to diagnose noise, vibration, and harshness issues and recommend targeted fixes (damping, isolation, geometry adjustments)
Evaluate conflicts between comfort, handling performance, and durability constraints with quantified rationale
Compare your platform's suspension parameters against competitor data and historical records to identify performance gaps
Generate design rationale summaries and engineering justifications for review boards, audits, and warranty claims
Assess spring rate, damper tuning, and bush stiffness selections against vehicle targets and manufacturing constraints
Example Output
Example 1: Geometry Translation
Input: "Our vehicle needs a body roll stiffness of 1.8 kN/deg and a natural frequency ≥1.3 Hz for smooth highway ride."
Output:
- Front suspension: Roll center height = 80 mm (reduces load transfer), anti-roll bar stiffness = 24 kN/deg
- Rear suspension: Roll center height = 120 mm, anti-roll bar stiffness = 20 kN/deg
- Bush compliance targets: 12° deflection at 2 kN lateral load
- Rationale: This geometry balances body control with compliance isolation.
Example 2: NVH Failure Diagnosis
Input: "Customers report a low-frequency booming noise at 12–18 Hz during acceleration on rough roads."
Output: ✓ Likely failure mode: Engine bay resonance coupling to suspension via transmission mount ✓ Secondary modes: Exhaust resonance, fuel tank slosh ✓ Recommended fixes: Increase transmission mount stiffness by 15%, add 50 mm sound absorber to wheel arch, retune damper compression by +10% ✓ Expected improvement: Shift resonance above 22 Hz (outside dominant road input range)
Example 3: Trade-off Summary
| Parameter | Comfort (Target) | Handling (Target) | Durability (Constraint) | Recommended |
|---|---|---|---|---|
| Spring Rate | 18 kN/m (low) | 22 kN/m (high) | <25 kN/m (fatigue life) | 20 kN/m ✓ |
| Damper C₀ | 1.2 kN·s/m | 1.8 kN·s/m | <2.0 kN·s/m | 1.5 kN·s/m (compromise) |
What's Included
- SKILL.md: Full skill instruction file with usage guidelines and success criteria
- Suspension Geometry Specification Template: Structured worksheet for translating performance targets into roll center, camber, toe, and bush compliance values
- Load Path Analysis Checklist: Step-by-step guide for identifying primary/secondary load paths and stress hot spots
- NVH Troubleshooting Flowchart: Decision tree for diagnosing noise/vibration modes and selecting remediation strategies
- Design Trade-off Matrix: Framework for evaluating conflicts between comfort, handling, cost, and durability with quantified scoring
- Compliance Documentation Template: Ready-to-use engineering summary format for reviews, audits, and change justifications
Who It's For
- Suspension engineers designing or tuning chassis systems for passenger vehicles, performance cars, or commercial vehicles
- Chassis engineering leads validating design decisions and building cross-functional alignment before CAD lock
- NVH specialists investigating vibration and acoustic issues in development or field failure analysis
- Engineering managers documenting design rationale for compliance audits, warranty reviews, and engineering change requests
- Automotive suppliers (suspension OEMs, elastomer manufacturers) benchmarking platform performance and justifying specification changes
Best For
- Translating vehicle performance targets (ride, handling, durability) into suspension geometry and spring/damper specifications
- Predicting load paths and stress concentration points before FEA or hardware testing
- Diagnosing and troubleshooting NVH failures, vibration issues, and compliance problems
- Analyzing trade-offs between comfort, performance, cost, and durability in suspension tuning
- Building engineering justification and compliance documentation for design reviews and manufacturing handoff
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