Need help, people who know metals and resources
#12
Senior Member
True Car Nut
Thread Starter
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 95naSTA
Its strange it says data points with AA are not for design.
The type of text I got that out of is Machine Theroy and Design.
The type of text I got that out of is Machine Theroy and Design.
#13
Senior Member
True Car Nut
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by willwren
The book written by a guy named Leroy?
The actual name of the book is Mechanical Engineering Design.
corevettecrazy,
What value did you get when you calculated it?
#14
Senior Member
True Car Nut
Thread Starter
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Likes: 0
Received 0 Likes
on
0 Posts
the calculated value is 18.95424837 (copied right from excel)
also does this make sense.
We need to find the work deforming and rupturing the specimen. Since the machine does not measure the length per time or load, creating an integral is sort of a pita. But I have the Toughness modulus, which is equal to the area under the stress strain curve.
The area is equal to the strain engery density (u). The strain energy (U) is another name for the work done. So if I were to multiple u by the volume of our piece then I would get approximately the amount of strain engery(work done)
does that sound right?
also does this make sense.
We need to find the work deforming and rupturing the specimen. Since the machine does not measure the length per time or load, creating an integral is sort of a pita. But I have the Toughness modulus, which is equal to the area under the stress strain curve.
The area is equal to the strain engery density (u). The strain energy (U) is another name for the work done. So if I were to multiple u by the volume of our piece then I would get approximately the amount of strain engery(work done)
does that sound right?
#16
Senior Member
True Car Nut
Join Date: Feb 2003
Location: Philly
Posts: 4,508
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by corvettecrazy
the calculated value is 18.95424837 (copied right from excel)
So 18%?
I'm not positive but it seems to beclose to your calculated value.
I'm not sure about your second question. I'd have to go diggin for that and I'm just getting over food poisoning.
#17
Senior Member
True Car Nut
Thread Starter
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by vital49
Originally Posted by My Father In Law
% Elongation in 2" of length is 19% for 1/2" Diameter 2020 T4 Aluminum.
because our origional length was 1.989" with a diameter of .503inches any chance you know where he got it from. Book name or website. I dont need exact info, just more than "bonneville club member'* father inlaw" lol
#18
Senior Member
True Car Nut
Thread Starter
Join Date: Jun 2004
Location: Rochester, NY (college)
Posts: 6,182
Likes: 0
Received 0 Likes
on
0 Posts
Originally Posted by 95naSTA
Originally Posted by corvettecrazy
the calculated value is 18.95424837 (copied right from excel)
So 18%?
I'm not positive but it seems to beclose to your calculated value.
I'm not sure about your second question. I'd have to go diggin for that and I'm just getting over food poisoning.
#19
Originally Posted by corvettecrazy
Originally Posted by vital49
Originally Posted by My Father In Law
% Elongation in 2" of length is 19% for 1/2" Diameter 2020 T4 Aluminum.
because our origional length was 1.989" with a diameter of .503inches any chance you know where he got it from. Book name or website. I dont need exact info, just more than "bonneville club member'* father inlaw" lol
Originally Posted by My Father In Law
"ASM Metals Reference Book", 2nd Edition, 8th Printing, American Society for Metals, 1983, page 299.