Inventor General Discussion

## Inventor General Discussion

*Expert Elite*
Posts: 27,056
Registered: ‎04-20-2006
Message 1 of 12 (405 Views)

# Engineering Question - You know you are gettting old....

405 Views, 11 Replies
11-05-2013 10:31 AM

....I opened a book (on Statics) and found a scrap of paper where I had scribbled out the equation

E/2G=1+V

and then re-arranged to solve for E or V.

E=2G(1+V)

V=(E-2G)/2G

...the problem is I can't remember what the formula was for (remember a Statics book) and I went forwards and backwards through the book and can't find the reference.

Anyone have an idea?

H.W. Morrow, Statics and Strength of Materials, 7th Ed.

-----------------------------------------------------------------------------------------
Autodesk Inventor 2014 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2015 64-bit
http://www.autodesk.com/edcommunity
http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm

The first thing that came to mind was Stress/Strain relationships

E - Modulus of Elasticity

G - Shear Modulus of Elasticity / Modulus of Rigidity

V - Poisson's Ratio

Valued Mentor
Posts: 303
Registered: ‎10-06-2011
Message 2 of 12 (394 Views)

# Re: Engineering Question - You know you are gettting old....

11-05-2013 10:40 AM in reply to: JDMather

Looks like Stress and Strain equations...

GSE Consultants Inc.
*Expert Elite*
Posts: 6,985
Registered: ‎12-01-2004
Message 3 of 12 (393 Views)

# Re: Engineering Question - You know you are gettting old....

11-05-2013 10:41 AM in reply to: JDMather

Whats a book?

Did you find this reply helpful ? If so please use the Accept as Solution or Kudos button below.

-------------------------------------------------------------------------------------
2015 Product Design Suite Ultimate
Windows 7 64 bit
Core i7 4820k processor (OC'd to 4.4Ghz), Nvidia GTX 770, 16G RAM

Valued Contributor
Posts: 62
Registered: ‎02-23-2009
Message 4 of 12 (393 Views)

# Re: Engineering Question - You know you are gettting old....

11-05-2013 10:43 AM in reply to: JDMather

The first thing that came to mind was Stress/Strain relationships

E - Modulus of Elasticity

G - Shear Modulus of Elasticity / Modulus of Rigidity

V - Poisson's Ratio

Valued Mentor
Posts: 303
Registered: ‎10-06-2011
Message 5 of 12 (382 Views)

# Re: Engineering Question - You know you are gettting old....

11-05-2013 10:44 AM in reply to: mcgyvr

Mac Book?

GSE Consultants Inc.
*Expert Elite*
Posts: 27,056
Registered: ‎04-20-2006
Message 6 of 12 (382 Views)

# Re: Engineering Question - You know you are gettting old....

11-05-2013 10:45 AM in reply to: mcgyvr

mcgyvr wrote:

Whats a book?

An artifact found in a dusty old building referred to as "The Library".  Most of my students have never been in this building.

-----------------------------------------------------------------------------------------
Autodesk Inventor 2014 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2015 64-bit
http://www.autodesk.com/edcommunity
http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
*Expert Elite*
Posts: 27,056
Registered: ‎04-20-2006
Message 7 of 12 (378 Views)

# Re: Engineering Question - You know you are gettting old....

11-05-2013 10:51 AM in reply to: conklinjm

conklinjm wrote:

The first thing that came to mind was Stress/Strain relationships

E - Modulus of Elasticity

G - Shear Modulus of Elasticity / Modulus of Rigidity

V - Poisson's Ratio

Thanks, I found it with your tip

Hook's Law for Shear.

G=E/(2(1+v))

The relationship between elastic constants.

-----------------------------------------------------------------------------------------
Autodesk Inventor 2014 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2015 64-bit
http://www.autodesk.com/edcommunity
http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
*Expert Elite*
Posts: 3,291
Registered: ‎04-06-2010
Message 8 of 12 (358 Views)

# Re: Engineering Question - You know you are gettting old....

11-05-2013 11:06 AM in reply to: JDMather

You're all going to be banned with language like that!

ChrisB

Please use .Accept as Solution &Kudos to further enhance the value of these forums. Thank you!

http://cbennertipstricks.blogspot.com/

*Expert Elite*
Posts: 6,985
Registered: ‎12-01-2004
Message 9 of 12 (350 Views)

# Re: Engineering Question - You know you are gettting old....

11-05-2013 11:21 AM in reply to: JDMather

JDMather wrote:

mcgyvr wrote:

Whats a book?

An artifact found in a dusty old building referred to as "The Library".  Most of my students have never been in this building.

oooohhh. So its like real world "cloud" storage.. I get it now.. .     gee why would you ever need one of those places. Have old people never heard of google before?

Did you find this reply helpful ? If so please use the Accept as Solution or Kudos button below.

-------------------------------------------------------------------------------------
2015 Product Design Suite Ultimate
Windows 7 64 bit
Core i7 4820k processor (OC'd to 4.4Ghz), Nvidia GTX 770, 16G RAM

Valued Mentor
Posts: 303
Registered: ‎10-06-2011
Message 10 of 12 (325 Views)

# Re: Engineering Question - You know you are gettting old....

11-05-2013 12:12 PM in reply to: mcgyvr

Google or Wiki...because EVERYTHING on the internet is true or factual!

GSE Consultants Inc.