Posts by dr funda 



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Moment of Inertia of a Trapezoid   Efunda formula seems incorre... 
Hello Gordon,
It appears that your definition of Iy is different... 

How do I cancel my membership? 
Hello Jay,
Your membership had been cancelled since 6/13/20... 

C(r) in Loan Calculator 
Hello,
We are sorry for the confusion. The little 'r' is not a s... 

Error in distilled water properties at 4 C 
Good call. We have doublechecked the number and it is indeed mis... 

tapered beam deflection 
First and foremost, we need to verify that the beam is long enoug... 

Beam online calculations 
Dear Koanguy,
From your descrlption, it does not seem that your ... 

Steel column stress calculation 
Dear Simon,
Per your effective column length (1.5m) and radius o... 

Steel column stress calculation 
Dear Engracadinha,
It appeas that the following is the calculato... 

Flexural modulus?? 
Hello, For homogeneous and isotropic materials, please use this l... 

IZOD Units, kJ/m^2 to ftlb/in 
Ok, if you really want to be scientific about the clamp, you coul... 

IZOD Units, kJ/m^2 to ftlb/in 
Hello,To build a testing apparatus per ASTM D256 specs, you will ... 

IZOD Units, kJ/m^2 to ftlb/in 
Hello,Yes, mathematically, J/m gives you Newton. But IZOD impact ... 

RESIDUAL STRESS MEASURAMENT NDT 
Yes it is. Normally we would take down blatant ads but this one i... 

APR calculation in Perl 
Hello,The reason you have a slightly diffferent answer is that yo... 

The webbased orifice calculator seems to have an error 
Well, didn't get the email. Could you please send it again to ser... 

The webbased orifice calculator seems to have an error 
Dear Gymnast,Could you please post your complete input values? We... 

Can I put a picture in a post? 
Did you send the pictures to us? I don't seem to have received th... 

Can I put a picture in a post? 
Currently the image upload function is disabled in the forum for ... 

Shigley Columns with Eccentric Loading 
The diagrams have been updated.http://www.efunda.com/formulae/sol... 

Shigley Columns with Eccentric Loading 
Hello,The schematic on the eccentric axial load is wrong, and we ... 

look at those Nasa pictures: 
Hi Gerdb,We really appreciate your longtime support of this foru... 

to upgrade our forum 
Ok, we hear you. Let's see what we can do. 

Important Forum information 
Yes we are listening. We have not experienced any decline in gene... 

DERIVATIVE OF SINE FUNCTION 
Dear Dave,Unless this is a trick question, the answers are (assum... 

Axially loaded leaf spring 
I think this is the page you are looking for. It's under "cu... 

Thin plate deflection calculation 
Bobd,For small deflections you may use our online calculator in t... 

rigid body dynamics? 
sdoughty11,If my posts gave anyone the idea that that kinematics ... 

rigid body dynamics? 
>>> So would it be safe to say that the contents of this... 

rigid body dynamics? 
Hello,Unfortunately, the answer is a big YES. Solving dynamics pr... 

rigid body dynamics? 
Hello,If we understand you right, you are looking for a library o... 



Showing Messages 130 (of 1246)
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