english units system for FEA analysis

[engroma]

Hi

Actually I am using the following system of units for my FEA simulations.

length: in
force: lbf
Elastic Modulus: psi
mass: lbf
mass density: lbf/in^3
WTMASS Param: 0.00259 ( why do I have to set up this parameter?)
Acceleration (1G): 386.1 in/sec^2

OUTPUT

Disp: in
Force: lbf
Stress: psi

I am used to carry out my FEA simulation with the metric one, but my customer wants the output in imperial units, therefore I started use the above systems.
I heard that there are different english systems of units for structural analysis, is the above one consistent?
What is the most english systems of units for structural analysis?

thanks

Engroma

 

[ThomasH]

Hi

Personally I "always" work in SI units.

But since you ask, there is a site at NASA that gives some unit "systems:

http://femci.gsfc.nasa.gov/units/index.html

I'm not sure what you need but it might help.

Good Luck

/Thomas

 

[40818]

You should read up and understand the wtmass param before you progress too far.