How to write this in both Parameters and in iLogic

[chris]

I know the OD and the Angle, I just need to solve for "X".

I'd like to see how to write this in Parameters as well as in iLogic.

[chris]

Okay, I think I have the "parameters" part figured out, but for some reason, I have to multiply the finished equation by 0.6685 to get it to match the gap measurement...? weird but whatever, it working.

The reason for this is so that with this rolled plate reducer template the user can adjust the roll angle gap to match the desired weld gap. But I'd still like to know how to write this in iLogic.

[chris]

Can someone explain why this equation is working if I type the angle "number" but not the Angle Parameter name? (this is to solve for the Arc Length)

[J_Pfeifer_]

Did you ever try to implement the equation inside the dimension box itself? Or did you attempt to use LOD from within the FX parameters? 

 Strange behavior I just tested on a small part in house here. Typing the parameter name into the FX window seems to have no effect. Typing it into the dimension box specifically it has no problem. Make sure you have the checkbox "key" selected, then you can either type the value name or click the arrow -> list parameters -> LOD

[Frederick_Law]

IV default unit for angle is rad.

Spell out all units in the equation.

Don't cheat with ul.

[J-Camper]

@chris,

not sure why you think you need that weird multiplier.  your WG value is not the correct chord length for the parameters in the image.  see images below where the equation and sketch give the same value:
values from your messagewider angle for clarity

[J-Camper]

@chris,

I did not fully read this message about actually wanting arc length instead of chord length.  Your equation in the first image post was chord length [D * sin(θ/2)].  Arc length equation [radian θ: R * θ  | degrees θ: R * (θ * PI / 180 deg)] does need the parameter to be in radians:

both equations

if you set the parameter type of angle to be radians then you can simplify the arc length equation to "diameter / 2 rad * angle"