Cœur physique et jumeaux numériques MechSim

MechSim définit l'architecture de référence pour high-throughput mechanical dynamics, gearbox mesh friction & thermal-structural coupled co-simulation. Modélisation multiphysique haute fidélité, réseaux neuronaux guidés par la physique (PINNs), Sim2Real et co-simulation temps réel.

MechSim System Architecture

Digital Twin Core: High-Throughput Mechanical Dynamics — Gear Train Elasto-Hydrodynamic Lubrication, Vibration Acoustics & Bearing Degradation

Subsystems & Simulation Modules

Elasto-Hydrodynamic Lubrication (EHL) Solver
Gear Tooth Contact Analysis (TCA) Engine
Rolling Element Bearing Defect Synthesizer
Acoustic Radiation & Noise-Vibration-Harshness (NVH)
High-Speed Torsional Vibration Resolver

Architectural Layers & Ingress Bus

Layer 1: Physical Sensing & Edge DAQ Ingress (OPC UA Pub/Sub / MQTT Sparkplug B / IEEE 802.1Qbv TSN / 100 kHz Sampling): High-frequency edge data acquisition, time-stamped telemetry ingestion, and microsecond clock synchronization with field sensors and PLCs.
Layer 2: Real-Time Physics & Co-Simulation Core (FMI 3.0 / Featherstone ABA / Symplectic Integrators / Non-Smooth Contact Solvers): Executes non-linear multi-body kinematics, rigid-body contact dynamics, and adaptive step-size co-simulation with guaranteed energy conservation.
Layer 3: Neural Surrogate & PINN Acceleration (Fourier Neural Operators (FNO) / Physics-Informed Neural Networks / DeepONet / TensorRT): Deploys deep operator network surrogates to solve continuous field PDEs (thermal, fluid, structural stress) at over 10,000 evaluations per second.
Layer 4: Semantic Twin & AAS Digital Thread (Asset Administration Shell (IEC 63278) / OpenUSD / WebGL / Gaussian Splatting (3DGS)): Provides standardized semantic model interoperability, bidirectional closed-loop control, and photorealistic spatial visualization.

Performance Benchmarks & Simulation Telemetry: < 1.2 ms (Physics Step Time) | < 1.8% (Sim2Real Error Margin) | 1,400x (PINN Surrogate Speedup) | < 15 us (Telemetry Sync Jitter)

Real-Time Multiphysics and Cyber-Physical Synchronization in MechSim

MechSim formalizes the engineering specifications for high-throughput mechanical dynamics, gearbox mesh friction & thermal-structural coupled co-simulation, combining rigorous mathematical solvers, real-time physics engines, and semantic digital threads.

Core Engineering Areas

Gear Tooth Contact Analysis (TCA) and Micro-Geometry Profile Optimization — Simulating loaded transmission error, tip relief modifications, and contact stress distributions in high-speed EV reducers.
Elasto-Hydrodynamic Lubrication (EHL) and Film Thickness Tribology — Coupling Reynolds equation with elastic deformation to predict boundary lubrication breakdown, scuffing, and micropitting wear.
Noise, Vibration, and Harshness (NVH) Acoustic Radiation Modeling — Predicting radiated sound power and psychoacoustic annoyance generated by high-frequency inverter-induced electromagnetic torque ripple.