topic stress analysis force question. in Inventor Forum

stress analysis force question.

slphantom — Mon, 01 Aug 2016 19:05:15 GMT

new to the Stress analysis environment and I am wondering, if you specify a force of say 1000 lbs and place the force arrows on 4 different rest surfaces, is that 4000 lbs or 1000 divided by 4?

thanks in advance

Re: stress analysis force question.

Binga — Mon, 01 Aug 2016 20:02:47 GMT

With 4 forces, 1000N each, included separately (select the face, then apply):

One force 1000N, in every faces.

One force, 4000N, in every face.

Although the different results, I think the forces are distributed in each face.

(I am really scared with these differences)

Re: stress analysis force question.

Binga — Tue, 02 Aug 2016 14:14:13 GMT

I found out the reason for the differences:
I have designed the 4 blocks asymmetric.

The results with the 4 blocks symmetric:

1000N applied in each face separately

4000N applied to all faces at the same time:

So, watch out with the asymmetric designs!

Re: stress analysis force question.

stenhofsteenge — Wed, 18 May 2022 07:25:03 GMT

hello,

im trying to recreate the same but get different results. the results are minor but where is this difference coming from??

1 force 2 arrows 50000N result: 12.58

2 forces 25000N result: 12.16

Where is this difference coming from??

Re: stress analysis force question.

admaiora — Wed, 18 May 2022 11:03:28 GMT

Can you attach the assembly?

Re: stress analysis force question.

stenhofsteenge — Thu, 19 May 2022 11:58:49 GMT

@admaiora

Please see attached.