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Modal, harmonic, and random vibration solved before tooling, not in returns
Send your CAD and load data. Get a roadmap to a part that lasts.
Static models assume loads that hold still. Real equipment shakes, spins, and gets hit. Vibration analysis services find the natural frequencies of your design. They show where those frequencies line up with motors, roads, or flow, and predict the stress and fatigue that follow.
When vibration is left out, teams do one of two things. They add stiffeners, mass, and isolators until the noise goes away, and pay for them on every unit. Or they find the cracked bracket or loose fastener in the field. There, every fix costs downtime.
PPS offers modal, harmonic, and random vibration analysis consulting alongside our comprehensive FEA services, nonlinear analysis FEA, and FEA thermal analysis services. Our modal analysis vibration checks show which modes matter and how to move them. You get a design that runs quiet, lasts, and costs no more than it has to.
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Cracks at welds, brackets, or mounts
Parts fail in service at loads far below their static limit.
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An equipment resonance problem at certain speeds
A natural frequency lines up with the machine.
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Fasteners that loosen over time
Vibration works joints loose between inspections.
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Electronics that fail shake or transport tests
Boards, connectors, and solder joints see fatigue.
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A new motor, fan, or speed on old equipment
A changed input can hit a mode nobody checked.
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Stiffeners and isolators added just in case
Mass and parts you pay for on every unit.
Cost you carry
Decision it lets you make
Result
Unit cost
Material & weight
Decision
Find the natural frequencies, then move them away from the input with stiffness where it counts.
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Result
No added mass or isolators you don't need.
Development
Prototypes & testing
Decision
Predict modes, response, and fatigue life before the build, and go to shake test to confirm.
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Result
Fewer prototype loops and shorter test phases.
Tooling
Rework & redesign
Decision
Find the resonance or the fatigue hot spot in simulation and fix the geometry before steel is cut.
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Result
No redesign after first article; tooling is built once.
After launch
Field failures & warranty
Decision
Model real duty cycles, speeds, and road or transport inputs, and release with documented margins.
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Result
Fewer cracked parts and less downtime, and a design you can defend.
01
A design that meets your loads at the lowest total cost, delivered as production-ready CAD and drawings
02
FEA results and margins you review and approve at each gate, before anything moves to prototyping.
03
You own the IP by default, set in your contract.
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If we missed it in our QC, we fix it. If your supplier can't make the part within three years, or supply dries up, we fix that too.
You send
What we need to start
CAD, native or STEP
Loads and operating conditions, or how the part is used
Material specs or test data, if you have it
Targets: weight, cost, life, or code
Failure history, if a part already failed
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You get
What you hold at the end
The optimized design: CAD and drawings ready for production
Models and results you reviewed and approved
Documented margins or code compliance
Test correlation, when testing is in scope: a partner lab or yours
A roadmap for what comes next, and a team that stays with you
We price to the value we deliver, not the hours we log. If the value isn't there for you, we'll say so in the assessment.
We review your project scope and the data you have and screen which modes matter.
Scope, targets, and gates, from where you are to where you need to be.
Modal and response FEA with CAD changes, plus shake testing when the design needs it.
The design, drawings, and models, second-checked in our QMS.
We stand behind the design through production and supply issues.
PPS engineers run FEA, CFD, and DFMA as one loop. Modal analysis finds the frequencies, and response analysis sets the stress. CAD changes follow, and manufacturing cost is checked before tooling. The design you approve is the design that ships.
Loads that never move
Or add stiffeners until it does
Tooling and test article paid for
Resonance finds the weak weld
New geometry, new prototype, new test
Which modes and inputs matter
Frequencies, stress, fatigue
Geometry refined to real margins
Second engineer verifies the model
Build once, to confirm
Every prototype loop you fund is margin lost. Get a free roadmap.
Get Your Free RoadmapScreens, crushers, and conveyor frames checked for resonance and weld fatigue under constant shaking.
Stop costly downtime.
Applications
Screens
Crushers
Weld Fatigue
Frames
Brackets, mounts, and housings tuned for road and engine inputs before the first durability test run.
Pass durability once.
Applications
Road Loads
Mounts
Brackets
NVH
Fans, pumps, motors, and turbine supports screened for resonance across their full operating speed range.
Fewer forced outages.
Applications
Fans
Pumps
Supports
Speed Range
Racks, chillers, and fan arrays checked so vibration doesn't loosen hardware or shorten its service life.
Keep hardware running.
Applications
Racks
Chillers
Fan Arrays
Isolation
FEA, CFD, CAD, DFMA, and testing under one roof. Engineering is a team sport, and you get the whole team.
One team, every skill.
Under One Roof
FEA
CFD
CAD
DFMA
Testing
Veteran-owned SDVOSB status gives defense and federal buyers a set-aside path to proven engineering.
Verify our SDVOSB status.
Credentials
SDVOSB
VOSB
CAGE 8ZK73
NAICS 541330
Missed something in our QC? We fix it. Supplier can't make the part within three years? We fix that too.
Support for the long run.
We Fix
Our QC Misses
Supplier Gaps
Supply Chain
We price to the value we deliver, not hours logged. You buy a design that works, not more iterations.
Pay for the result only.
Collections
Gold
Platinum
Diamond
When does my design need vibration analysis services?
Your design needs vibration analysis services when moving loads, not only static ones, decide whether the part survives. Static checks assume loads that hold still. Real equipment spins, shakes, and gets hit in service. A structure responds most at its natural frequencies, where small inputs build large motion. Watch for five signs. Cracks appear at welds, brackets, or mounts. Noise or shaking peaks at certain speeds. Fasteners loosen between inspections. Electronics fail shake or transport tests. Or stiffeners and isolators were added just in case. Repeated loads, not one big load, often end a part's life, so each sign costs you downtime or extra parts.
PPS reviews your project scope and operating data in a free assessment and tells you which modes matter. If a simple check is enough, we say so. That is when vibration analysis earns its cost. NASA's structural standard, NASA-STD-5001, sets service life factors, not just strength factors, for this reason. When you need physical proof, our HALT testing services confirm the design on a shaker table at partner labs.
What is the difference between modal, harmonic, and random analysis?
Our vibration analysis services usually start with modal analysis. It finds the natural frequencies and mode shapes of your design. That tells you where the design will respond and where it is weak. Harmonic analysis then applies steady inputs, such as a motor or fan at a known speed. Random vibration covers inputs that are never the same twice, like road, rail, or transport loads. It predicts fatigue life from a spectrum. Pick the wrong analysis and you get a clean answer to the wrong question. A truck ride is not a sine sweep. NASA-STD-7001 shows how random vibration test levels are set for flight payloads.
Many designs need only one or two of these. A fan support may need modal and harmonic checks only. An electronics box shipped by truck needs random vibration and fatigue. Impact and drop events use transient analysis instead. We run the work in ANSYS Mechanical and Abaqus and can match your test spectra or standard profiles. The free assessment tells you which analyses your design needs and why.
What do you need from us to start?
To start a project with our vibration analysis services, send what you have, in any format. That usually means CAD, native or STEP, operating speeds, and measured vibration, if you have it. Add material specs or test data, your targets for life, noise, or cost, and any failure history. Missing data is a common reason engineering projects stall. A model built on guessed inputs gives a guessed answer, and a guessed answer can cost a prototype. That is why we don't start the work until every data set is in. For gaps in material data, NIST's Material Measurement Laboratory is a good first stop.
Once your data is in, the first step is a free assessment of your project scope and data. We confirm what the work can and can't answer, and tell you what is still missing. Then we send a roadmap proposal with scope, targets, and approval gates. Every project is scoped on its own, so the roadmap sets the schedule, not a stock promise. NDAs are available before you share files.
Who owns the design and the models?
You own the IP from your vibration analysis services project by default, as set in your contract. That covers the design, the drawings, and the models. Some firms keep the models or license them back to you, so every later change sends you back to them, at their price. That locks your product to one vendor. It also makes design reviews harder, because your team can't open the evidence behind the decisions. Your customers may ask for that evidence too. Export-controlled programs add another layer. The State Department's ITAR portal sets the rules for defense data, and a loose handoff can break them.
At PPS, nothing is held back to tie you to us. You receive the native CAD, the drawings, the model files, and the documented results. Your engineers can check the work, rerun a load case, or hand the package to a supplier. We sign mutual NDAs before any data is shared. Tell us about export rules at the start, and we set up data handling to match.
What happens if a prototype fails in test?
If a prototype fails in test, we find out why and fix the design. With vibration analysis services from PPS, you approve the data at each gate. So a test result is checked against predictions you have already seen, not against a black box you can't open. Hard engineering carries unknowns. Real inputs, material lots, and assembly effects never match a model perfectly. A failure in test is data, because it shows which assumption was wrong. That data improves the model and the design. NASA's standard for models and simulations sets out how to judge whether a model's results can be trusted.
When testing is in scope, we plan the shake test to confirm the frequencies and margins that matter most. Then we correlate the model to the results. If the miss was ours, because something slipped through our QC review, we fix it. If the test finds a condition nobody knew about, we scope the change with you and update the roadmap. Either way, you get a clear answer.
How are vibration analysis services priced?
We price vibration analysis services to the value they deliver, not the hours we log. Hourly billing rewards extra iterations. The meter keeps running whether or not the design improves. So the cheapest quote can become the most expensive project once tooling, rework, and field failures show up. Federal buyers know this risk well. The Federal Acquisition Regulation notes that a time-and-materials contract gives the contractor no positive profit incentive for cost control or labor efficiency. Our incentive runs the other way: get the design right the first time. We engage by fit, not as a ladder, so you start where your need is.
Gold (from $35K): you have one project and need help with it. Platinum (from $15K/mo): you have recurring work at a steady rhythm. Diamond (from $800K/yr): you have a long development program, often multi-year. Gold is never required, and these are starting points, not quotes. We price to the value we deliver, not the hours we log. If the value isn't there for you, we'll say so in the assessment.
Not sure what is shaking? Send the model. Get a free roadmap.
Send your model and speeds. We review your project scope in a free assessment and reply within one business day with next steps.
On-site assessments that require travel are quoted separately.
