topic Re: Need help using Frame analysis in Inventor Forum

Need help using Frame analysis

martijn.schrager — Tue, 03 May 2022 09:09:37 GMT

Hello everyone,

I am currently testing Inventor's frame analysis to see the displacements in drawn portals for the Dutch railway.

The calculations are currently done with MatrixFrame and the company i work for wants to switch to Inventor if possible. I have run into a problem and an annoyance...

First the problem;

A portal carries the cables that supply the train with power and as a result need to withstand a lot of different types of forces/loads. Within Matrix all forces are put into categories, such as, for example; the loads at a temperature of -20 C. A different one would be all forces that belong to the wind.

When al these categories are done and calulated, Matrix will combine them with certain factors to create maximum displacements. (I have included a picture to show an idea of what this is like)

My question is if anything like this is possible? Ofcourse i could do this by hand and just add the total to see the results. But the workflow would be a lot faster and more organised with this.

Then the annoyance:

Any time I let Inventor make a report in either PDF or Word it ruins the image only displaying half of it (as shown in picture). I'm sure that I'm probably just an idiot but if somebody knows what to do to fix it I will be forever grateful!

Thanks in advance!

Martijn.

Re: Need help using Frame analysis

johnsonshiue — Tue, 03 May 2022 20:11:23 GMT

Hi Martijn,

Frame Analysis does not deal with temperature. It uses the classic static equations and beam profile to solve the stress. I suspect you need to use Inventor NASTRAN or Fusion Simulation.

Many thanks!

Re: Need help using Frame analysis

martijn.schrager — Wed, 04 May 2022 05:53:36 GMT

Hi Jason,

I'm not really dealing with temperatures directly nor using them. Calculations have been done as to what the weight and pressure of the cables would be in a temperature. These forces are then added to the portal normally. The problem sits with being able to combine simulations with each other and see the combinations in a report.

Re: Need help using Frame analysis

tobias — Wed, 04 May 2022 07:45:34 GMT

The calculation engine of Frame Analysis comes frome Autodesk Robot Structural Analysis.

You need this software to do what you want. It is part of the AEC collection from Autodesk.

If you press Export within Frame Analysis you get the following window:

Robot Structural Analysis Pro (RSA Pro):

https://www.autodesk.com/products/robot-structural-analysis/overview?term=1-YEAR&tab=subscription

Others:

Scia Engineer

Skyvic (Online)

Re: Need help using Frame analysis

martijn.schrager — Wed, 04 May 2022 07:56:56 GMT

Aha, thanks!
So I'm basically using a demo version of another package thats going to cost me a kidney?

Well, now i know... I'll just do it by hand then.
Thanks again!

Cheers,
Martijn

Re: Need help using Frame analysis

tobias — Wed, 04 May 2022 08:10:22 GMT

Helaas...

Nevertheless I think Frame analysis is usefull for engineers to have a first impression of the stability of their frame design. But if you want to confirm to codes, wind pressure, safety factors are whatever, and have it checked by third parties, then yes, "insufficient".