Test-to-model correlation

Mechanical model validation with geometry-linked UFF data

Export XYZ geometry, tri-axial velocity waveforms and frequency response functions (FRFs) in one UFF file. Import the test model directly into your modal-analysis workflow and compare measured and predicted response.
Every waveform and FRF remains tied to its measurement point and direction, ready for mode-shape animation, FRF overlays, MAC, COMAC and model updating.
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One UFF handoff

One file carries the test geometry, response directions and dynamic data.

Geometry, waveforms and FRFs

XYZ coordinates, tri-axial velocity waveforms and FRFs remain associated with each measurement record.

Experimental modal analysis

A direct path from test to FE correlation

Experimental modal analysis compares natural frequencies, mode shapes, damping and FRF magnitude and phase on a geometry-aware test model. The UFF export removes the reconstruction step between measurement and correlation.

1. Define

Set the geometry, test points, response directions and excitation reference.

2. Measure

Capture dense non-contact velocity data and combine it with force, acceleration, displacement or strain references.

3. Correlate

Review modes, frequency and damping estimates, FRF overlays, MAC, COMAC and other correlation indicators.

4. Update

Focus the model on the joints, boundaries, material properties and local stiffness that drive the mismatch.

Geometry-aware data

Keep response location and direction intact

Separate geometry, channels and direction definitions force analysts to rebuild the test model before correlation begins. A coherent UFF handoff avoids that work.
Ommatidia exports XYZ geometry coordinates, tri-axial velocity waveforms and FRFs linked to the same measurement points.

Link point and response

Geometry and response records arrive together, so channels do not need to be reconstructed against coordinates.

Preserve direction

XYZ output identifies the response direction at each test degree of freedom.

Start analysis sooner

Import the test model and move into visualisation, parameter estimation and correlation.

Dense measurement coverage

See the regions that drive the mismatch

Model differences often sit at a joint, rib, bonded interface, mounting feature, cut-out or boundary. Dense measurement points reveal local response on complex structures and compact components without sensor mass or cabling shaping the test.

Complex structures

Cover panels, assemblies, frames and larger structures with the spatial detail needed to interpret the measured response.

Small components

Measure local mode shapes where conventional sensor placement is intrusive, impractical or too sparse.

Local response

Measure small features without a dense sensor array

Coils, power-electronic assemblies, fasteners, bonded regions and compact substructures can carry local behaviour that a sparse grid misses. Geometry-linked tri-axial velocity data shows that response without loading the test article with sensors.
Built for hybrid test setups

Use Laser RADAR for coverage and retain the complete test model

Laser RADAR supplies dense non-contact response measurements. Pair it with impact-hammer or shaker forces, accelerometers, displacement probes, strain sensors and operational references as the test requires. Ommatidia places the measured vibration field into that wider test model.

UFF export

Transport test geometry and structural-dynamics data into the modal and correlation environment your team uses.

Geometry-aware review

Open a test model with points, directions, waveforms and FRFs linked before animation or correlation begins.

Your analysis workflow

Keep your existing analysis package, naming conventions and validation criteria.

Continue the workflow

Resources for the next model-validation decision

Move from test planning into a proven workflow, a comparable application or the measurement platform that fits the structure.

Full-field modal-analysis workflow guide

Follow the end-to-end workflow from excitation and FRF acquisition through curve fitting, MAC review and UFF export.

Impact-test application note

See an impact-hammer test on a concrete slab using 65 simultaneous response measurements and geometry context.

PCB vibration application note

Explore high-density response measurement on populated electronics where local component behaviour drives qualification risk.

Choose the measurement system

Products and application context

Q2 Laser RADAR

For complex parts, dense dynamic coverage and integrated 3D geometry in one measurement workflow.

Q1 Laser RADAR

For large or difficult-to-access structures that need stand-off geometry capture and vibration insight.

Acoustics, noise and vibration applications

Browse vibration, modal-testing and NVH applications by engineering question, structure and measurement constraint.

Questions from model-validation teams

Practical answers before you plan the test

호환 가능한 후속 도구를 위해 측정 형상, 좌표와 Q-Series 진동 결과를 함께 유지할 수 있으며, 시험에 필요한 입력 기준이 있으면 응답과 FRF 데이터도 포함할 수 있습니다. 소프트웨어 버전과 워크플로에 맞춰 UFF 데이터셋, 단위, 좌표 규칙과 수신 도구 요구사항을 확인하십시오.

FRF는 주파수에 따라 측정된 구조 응답을 측정 입력과 연결합니다. 해머 또는 셰이커 모달 시험에서 공진을 식별하고 모달 파라미터를 추정하며 시험 응답을 유한요소 모델과 비교하는 데 사용합니다. 출력 전용 진동 스펙트럼은 자동으로 FRF가 아닙니다.

예. 해머 힘을 시간 정렬된 입력 기준으로 취득하고 Laser RADAR가 선택한 형상에서 진동 응답을 기록해야 합니다. FRF 계산 또는 내보내기 전에 트리거, 시간, 좌표 방향, 대역폭, 윈도잉과 힘 신호 품질을 관리해야 합니다.

좌표계, 측정 위치, 응답 방향, 단위, 경계 및 운용 조건, 주파수 범위와 비교 물리량을 맞추십시오. 명확한 대응은 고유진동수, 감쇠, 모드 형상과 FRF 차이를 설정이나 매핑의 인공물이 아닌 의미 있는 차이로 만듭니다.

예. 엔지니어가 측정 FRF 또는 식별한 모달 파라미터를 모델 예측과 비교하고 차이를 업데이트 방향에 활용할 수 있습니다. 소프트웨어가 모델을 자동 검증하거나 업데이트하지 않으며 파라미터 선택, 수용 기준과 해석은 분석에 포함됩니다.

아닙니다. UFF는 호환 가능한 형상과 측정 데이터의 전달을 단축할 수 있는 교환 형식입니다. 모달 식별, 상관, 모델 업데이트, 불확도 검토와 보고에는 적절한 후속 소프트웨어, 정의된 방법과 자격 있는 엔지니어링 판단이 필요합니다.

Plan the correlation test

Build the measurement plan around the model decision

Tell us the structure, expected modes, test environment and analysis workflow. We will help define the coverage and data handoff needed for your correlation work.
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