FEM Development and Structural Integrity

Structural decisions grounded in representative models

LaFontaine Engineering develops finite element models and structural analyses from preliminary design through verification. We emphasize model fidelity, traceable assumptions, and correlation with measured hardware behavior.

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Inputs we work with

Geometry, materials, joints, interfaces, boundary conditions, load cases, and available modal, static, or dynamic test data. Models range from detailed components and subsystems to integrated vehicles.

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Model development and correlation

• Element selection, mesh refinement, material definitions, and boundary conditions matched to program objectives

• Representation of joints, interfaces, and load paths consistent with hardware and test configurations

• Frequency and mode-shape matching, stiffness and mass adjustments, damping calibration, and validation of interface assumptions

• Correlated models supporting downstream loads, vibration, and stress analysis

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Strength, stiffness, and fatigue

Static, dynamic, and combined-load assessments address launch, ascent, on-orbit, and test environments. Strength and margin-of-safety calculations account for load factors, uncertainties, and material allowables.

Fatigue assessments address cyclic loading, including vibration- and acoustics-driven fatigue. We identify fatigue-critical locations and quantify accumulated damage under representative operating conditions to inform design, qualification, reuse, and extended-life decisions.

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Deliverables and next step

Model and analysis documentation is structured for program reviews, test planning, and verification. Tell us about your structure, available models or data, and the decision you need to make: info@lafontaineengineering.com.