Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here


Verifying Simulated Results

Verifying Simulated Results

Verifying Simulated Results

Hey all. I work for a company that produces aircraft avionics. The job requires thermal and mechanical analysis on circuit boards. We use Proe Creo Simulate for our simulated loads. I guess my question would be: What resources are out there to verify results? I'm usually given a Random Vibration profile. Id like to be able to know if the data I’m plugging into my simulation is accurate, and if the model is as true to real life as I can make.

RE: Verifying Simulated Results

Google "vibration test lab" and sift through the results to find one local to you. Call them and discuss what you are looking for. Contract them to do some testing on a couple of your boards/assemblies and pay extra if you need to to spend the day or so watching how they do the testing and gather results.

In the end, if your company is serious about what you do, you will end up purchasing a shaker table and control/data acquisition equipment.

RE: Verifying Simulated Results

Thanks btrueblood. My company does have a shaker table. I guess my next approach is to compare g loads on my model, to the accelerometer data from the actual unit.

RE: Verifying Simulated Results

You can also record strain gage readings, though it gets tricky (thermal compensation on a hot shaker head - take static readings before and after with temperature readings also). And strobes can help you define modes/nodes.

A crazy idea - why not source a small MEMS accelerometer and connector and have them mounted on a test board (if you have the real estate). Otherwise, you are always having to figure out the impact of the accelerometer and mounting means on your results.

RE: Verifying Simulated Results

Do not forget the stiffening effect and added masses of the components soldered to the PCB. They will give significant property changes from the original PCB.
Steinberg's book "Vibration analysis for electronic equipment" is a must if you are into vibration of electronics

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


White Paper - The State of Product Development and Hardware Design 2019
The most successful companies are usually the ones that never rest. They are always striving to get better, to deliver more innovative products and get them to market faster. Onshape surveyed 850 product design and manufacturing pros to learn what techniques and strategies they’ve employed to keep ahead of their competition and in this white paper their answers are distilled. Download Now
Research Report - Mass Customization Placing Design in the Customers Hands
Products come in all shapes and sizes, and customers demand solutions tailored to their needs. With mass customization software, these two facts can be reconciled in an automated, customer-facing experience called a product configurator. In this engineering.com research report, we examine the different levels of mass customization with the pyramid of product configurators. Taking a look at real-world case studies, we discover how the highest level of the pyramid can enable true engineering automation, saving time and increasing customer satisfaction. Download Now
Research Report - Test and Simulation Survey
We at engineering.com continually hear how engineers and designers will be doing simulation, such as FEA and CFD, and that they will be doing it early in the design cycle. Is this wishful thinking? We found out what it is really like in industry. Read more now. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close