triangle stress (welding)

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Old Oct 29, 2004 | 05:48 PM
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Default triangle stress (welding)


say you were making a triangle out of flat metal bars (1/8th inch thick, 1.5 inchs wide) would you rather weld the corners together butt to butt or weld the bars overlapping each other?

which triangle would be stronger or is a moot point?


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Old Oct 29, 2004 | 05:55 PM
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Default Re: triangle stress (McDade)

butt to butt, like an old skoo 70s dance
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Old Oct 29, 2004 | 06:03 PM
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Default Re: triangle stress (b16hybridsol)

is it because the metal would be pushing against other pieces of metal instead of pushing against the welds?
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Old Oct 29, 2004 | 06:06 PM
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Default Re: triangle stress (McDade)

that and it'll make the structure more rigid because there won;t be an offset at the joining points
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Old Oct 29, 2004 | 06:07 PM
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Default Re: triangle stress (b16hybridsol)

thanks
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Old Oct 29, 2004 | 06:14 PM
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Default Re: triangle stress (McDade)


<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by McDade &raquo;</TD></TR><TR><TD CLASS="quote">
say you were making a triangle out of flat metal bars (1/8th inch thick, 1.5 inchs wide) would you rather weld the corners together butt to butt or weld the bars overlapping each other?

which triangle would be stronger or is a moot point?


</TD></TR></TABLE>i would say overlapping and boxing the weld would be stronger because you don't have to worry about weakness from the HAZ as much. the draw back would be it would be thicker and heavier. this question is best answered depending on what the triangles will be used for.
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Old Oct 29, 2004 | 06:16 PM
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Default Re: triangle stress (stock steve)

mdm (mcdade domestic market) bling fender braces
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Old Oct 29, 2004 | 06:24 PM
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Default Re: triangle stress (McDade)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by McDade &raquo;</TD></TR><TR><TD CLASS="quote">mdm (mcdade domestic market) bling fender braces</TD></TR></TABLE>
if it's for fender braces, it probably doesn't matter, i would go butt to butt for weight savings. import fenders are usually light and is not that heavy of a load.
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Old Oct 29, 2004 | 06:35 PM
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Default Re: triangle stress (stock steve)

I'm pretty sure he means structural braces on the front, under the fender. Supposed to stiffen up the front rails a little.
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Old Oct 29, 2004 | 07:00 PM
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Default Re: triangle stress (Bailhatch)

bingo

j's racing fender brace


stock 2000 civic ex


cardboard mockup
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Old Oct 29, 2004 | 07:19 PM
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Default Re: triangle stress (McDade)

Mc just the way you have it in your picture with the
cardboard will be the strongest if you use lap welds.
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Old Oct 29, 2004 | 07:52 PM
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Default Re: triangle stress (mxnut)

i'll give it a try tomorrow
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Old Oct 29, 2004 | 09:09 PM
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Default Re: triangle stress (Bailhatch)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bailhatch &raquo;</TD></TR><TR><TD CLASS="quote">I'm pretty sure he means structural braces on the front, under the fender. Supposed to stiffen up the front rails a little. </TD></TR></TABLE>
sorry, wasn't clear on the application. thanks for the correction
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Old Oct 30, 2004 | 04:07 AM
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Default Re: triangle stress (McDade)

Whats the point?

Really, someone explain this to me... and not that "its stiffer y0!"
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Old Oct 30, 2004 | 04:52 AM
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Default Re: triangle stress (.RJ)

its stiffer y0!
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Old Oct 30, 2004 | 05:08 AM
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Default Re: triangle stress (Dan GSR)

:middlefinger:
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Old Oct 30, 2004 | 07:03 AM
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Default Re: triangle stress (.RJ)

you want to know what the point is?

i don't want to spend $200 to see if these things work of not.

i'd rather spend $10 in metal and a few hours of my time.

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Old Oct 30, 2004 | 07:08 AM
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Default Re: triangle stress (.RJ)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">Whats the point?

Really, someone explain this to me... and not that "its stiffer y0!"</TD></TR></TABLE>

supposed to tighten up the front end, something to the affect of a strut bar, but some people say its more noticeable
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Old Oct 30, 2004 | 09:14 PM
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Default Re: triangle stress (b16hybridsol)

Does anyone have this on their car? If so, what are your thoughts on it? I might just have to fab one of these up
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Old Oct 31, 2004 | 04:38 AM
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Default

it looks like it just prevents a small amount of flex that would come during a high-g turn. if you are going to do that, you would also want to make sure that the subframe is all connected as well or else it wouldn't make much sense to try to prevent body flex on the top half of your car, the less important part, and not be counter-acting it on the bottom half where it would make more of an effect.
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Old Oct 31, 2004 | 07:47 AM
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Default Re: triangle stress (mxnut)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mxnut &raquo;</TD></TR><TR><TD CLASS="quote">...cardboard will be the strongest if you use lap welds.</TD></TR></TABLE>


GAHAHAHAHAHA!!!

talk about modifying crumple zone properties...


Modified by Sobe_Death at 2:53 PM 10/31/2004
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Old Oct 31, 2004 | 10:16 AM
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Default Re: triangle stress (Sobe_Death)

to make it a little stronger you should take the angled part that goes from lower R to upper L in your cardboard mock up and make it a little longer and stretch more froward. I plan on just welding in these braces when I do my new fender/paint job this winter. I see no reson to make them bolt in on my $1000 dollar hatch. should cost about $10 as you said
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