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Electrical Simulation Design Engineer
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LTTS US Branch
Dublin, Ohio
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Job Description
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Job Description & Skill Requirement:
1.EM simulation model development (Jun-2026):
Details: Develop models of vehicle components (e.g., lights, ECUs, actuators, motors, switches) for application to electromagnetics simulation performed by the lead simulation engineer. Models shall be in FMI/FMU format preferably or in tool-native formats where necessary. Use industry tools such as Ansys EMC Plus, HFSS, and CST for modelling in support of simulation for EMI/EMC compliance, antenna design, and signal transmission.
1. Understand and develop requirements and planning deliverables
Simulation Model Requirements Document
- Objectives (e.g., EMI compliance, antenna performance, signal integrity)
- Frequency ranges, operating modes, and standards (CISPR, FCC, ISO, etc.)
- Accuracy targets and acceptable error margins
- Boundary condition and environmental assumptions
Modeling Strategy / Solver Selection Rationale
- Chosen solver(s) and justification (FEM, FDTD, MoM, Hybrid)
- Trade-offs considering accuracy vs. runtime
- Simplifications and exclusions
2. Develop geometry and model Definition
3D Geometry Models
- CAD-based or abstracted geometry used for simulation
- Clear definition of reference planes, ports, and coordinate systems
Parameterization Setup
- Key geometric and material parameters
- Functional characterization for operating modes
- Tunable variables for optimization or sensitivity studies
Model Versions / Configurations
- Baseline model
- Variants for what-if analysis (different layouts, shielding, materials)
3. Assign physically representative material and excitation definitions
Material Property Definitions
- Conductivity, permittivity, permeability, loss tangents
- Frequency-dependent material models where applicable
Excitation & Source Definitions
- Ports, sources, waveforms, and power levels
- Coupling mechanisms (near-field, far-field, crosstalk paths)
Boundary & Initial Conditions
- Radiation boundaries, PMLs, symmetry planes
- Grounding and reference assumptions
4. Assess mesh and numerical configuration to guarantee model accuracy and convergence
Meshing Strategy Description
- Mesh type, refinement criteria, and convergence approach
- Justification for manual vs. adaptive meshing
Convergence Studies
- Mesh or timestep convergence plots
- Evidence that numerical error is controlled
Solver Settings Documentation
- Solver type, tolerance levels, iteration limits
- Parallelization or HPC usage (if applicable)
5. Support simulation results and outputs in collaboration with lead simulation engineer
Primary Simulation Results
- Field plots (E-field, H-field, current density)
- S-parameters, impedance, radiation patterns
- EMI/EMC metrics (emissions, susceptibility, coupling levels)
Post-Processed Data
- Derived quantities (efficiency, shielding effectiveness, margins)
- Compliance pass/fail indicators
Raw Data Files
- Solver output files
- Exported data for downstream analysis
6. Confirm validity and verification of deliverables
Model Verification
- Analytical checks or benchmark comparisons
- Numerical stability and consistency checks
Correlation with Measurement (if available)
- Comparison against lab or field test data
- Explanation of discrepancies and corrections
Assumptions & Limitations Log
- Known model limitations
- Valid use cases and boundaries
7. Support optimization as required by top-level simulation
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Job Requirement
Siemens Capital, Electrical harness, Schematics, Catia V5/6, 3D routing
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