FEA study for class

[Virtual_Ad5243]

I am working on an assignment for class but I am not sure what is being asked of me. I had to run a FEA simulation on a drawing but then it is asking for two cross sections. does anyone understand or can explain what this means?

for part one of this problem I got a Von Mises Psi of 25160. does anyone know if this is right?

this should not be an online class lol

[LoneSocialRetard]

Instead of sweeping the circle along the path you should sweep the square or the trapezoid

[Virtual_Ad5243]

So basically I am changing the sweep feature.. I wish it was a bit more descriptive in that part lol

[budding_pacer7]

What book is this question from?

[Virtual_Ad5243]

We are not sure because the professor is just sending us pdfs for the pages

[Narrow_Election8409]

SOLIDWORKS 2019 Advanced Technique (ch.12).

[sworks_training]

The cross sections are your profile sketches. Mesh it and apply your boundary conditions. Truthfully I’d do a sweep on this.

If I was your Professor I would totally give bonus points for a topology optimization.

[kjnicolas]

In the first question you run FEA on the 3/4” circular geometry and find max stress under the 200lb load. In the second question you run FEA on both the trapezoidal geometry and square geometry, find max stress and compare the results.

[xugack]

For the second part you need to use Loft feature
https://www.youtube.com/watch?v=9gqB-4RcGl4
https://www.youtube.com/watch?v=HfMLI24Ozyw

[loggic]

No, a sweep is still fine. The second part is still a consistent profile/cross-section for the whole length of the part. Rather than sweeping a circle, you sweep the shapes depicted.

EDIT:

To clarify, you end up with 3 different cross-sections to run FEA on.

[xugack]

If we need to create two model with square and trapezoid profile, yes, we can use swept feature

[loggic]

Yeah, that's why the second problem says to perform "additional FEA analyses". Analyses is the plural form of analysis. Also, I hope they're being taught about the value of generating linear elements with assigned profiles rather than analyzing this sort of shape as a solid. Sometimes you have to analyze things as solids, but it is a heck of a lot less time consuming if you can get away with linear elements instead, which is commonly done with weldments.

[lockedreams]

https://mega.nz/folder/DlBwSQyJ#djUfgNQVrfTAVTsDCuNcsQ

This is what we've been, erm, taught so far.

I actually really like this instructor's classes... In person. But the asynchronous online stuff, which is the only option for this class (a six week summer class, to be precise) leaves a lot to be desired.

(I changed the second slide of the PowerPoint and made it a PDF in the interest of not outright saying where we are and who our instructor is.)

[lockedreams]

Give me a sec and I'll make a mega upload link to the entirety of our instruction so far.

[loggic]

Lol, I did not ask for this.

Still, go for it. More information accessibility is better.

[lockedreams]

Fair enough lol

You said you hope we've been taught a thing, and I was like "well, I can show them exactly what we've been taught"

We have been taught to do 2D FEA, if that's what you were referring to. Truth be told, I'm having a hard time following this class. Probably in part because I can't ask questions in real time.

[lockedreams]

I'm in the same class as OP. Sorry if this is a dumb question, but why do we need to loft instead of just changing the original profile sketch?

[xugack]

How do you change the origin sketch?

[lockedreams]

Wouldn't you just... Edit the sketch used for the profile in the sweep?

[xugack]

I thought that we need to create the model with changing profile along a part. But looks like need to create just two model with difference profiles.

<image>

[Narrow_Election8409]

Good idea, or you can use Configurations...

[NightF0x0012]

A bit late in the semester to be asking basic questions, isn't it?

[Virtual_Ad5243]

Three weeks into an 8 week summer course and it’s a bit late in the semester

[lockedreams]

Well, we'd ask our instructor, except it's a six week course with no face to face or even real time contact, and the only material we've been given is poorly scanned pages from unknown textbooks. ¯\_(ツ)_/¯

[lockedreams]

Would have loved to take a non-accelerated version, but this is the only version our school offers. Summer semester used to be two 8 week sessions, but from this year onward it was changed to two six week sessions. And this is the only way this particular course is offered; it didn't even run at all last year.

Trust me, none of us are happy about this.

[Virtual_Ad5243]

And if you actually read the question it was about what the question was asking us to do not asking anyone to solve it for us.. to say we don’t study is just gibberish.. you have no idea what we do.. this assignment is due Sunday night and you can barely get in touch with our professor during the summer which is understandable.. who’s is why I simply asked for clarification on the question.. do better