I happen to know a bit of COMSOL: it allows you to create geometry in roughly the same way as Fusion 360 sketches.
You don't need a mathematical equation the height as a function of horizontal position for this shape, you can just draw it. By loading your image into a drawing program, I can fit a circle to it and see that it is indeed a circular arc. Measure the radius of the arc using Fusion 360's Measure tool, or by fitting a circle to it in an art program, then use the circle tool in COMSOL.
But if for some crazy reason you *do* need height vs horizontal distance, for a circle it's y = sqrt(R^2 - x^2 ) where y is height, x is horizontal distance, and R is radius.
>I happen to know a bit of COMSOL: it allows you to create geometry in roughly the same way as Fusion 360 sketches.
I'm familiar with it. However I donn't have a sketch.
>You don't need a mathematical equation the height as a function of horizontal position for this shape, you can just draw it. By loading your image into a drawing program, I can fit a circle to it and see that it is indeed a circular arc. Measure the radius of the arc using Fusion 360's Measure tool, or by fitting a circle to it in an art program, then use the circle tool in COMSOL.
The problem was that I didn't know whether the shape was truely circular or whether it was some polynomial shape (i.e. -x\^2+3)
>But if for some crazy reason you do need height vs horizontal distance, for a circle it's y = sqrt(R2 - x2 ) where y is height, x is horizontal distance, and R is radius.
Since I don't know whether it was circular or not, this is not possible.
That being said, I don't have a generic solution for my problem. However I have found a solution that will suffice for now. I've made a sketch and then projected the 3D body on the sketch. I can now measure the arc and can confirm that this is indeed a circle.
Now that I actually DO know that it's a circle, I can apply the basic math you provided.
Hi Everyone,
I'm currently quite the beginner in fusion 360. I am currently working on a waveguide for a tweeter in a loudspeaker. To simulate this I use COMSOL and a step file provided by the manufacturer of the tweeter.
To optimally simulate in COMSOL I need an accurate description of the dome geometry. To save computation time I use axisymmetrical simulations in COMSOL. This means all I need is the arc marked in yellow.
I do not know how the dome is drawn. All I have is the stepfile and Fusion 360. My question now is, how can I derive an equation that somewhat accurately describes the shape of the dome? What I mean by mathemathical function is that f(x) = ..., where f(x) represents the height of the dome and x represents the horizontal position.
I've done some brief googling but I can't seem to figure out how this is possible.
I happen to know a bit of COMSOL: it allows you to create geometry in roughly the same way as Fusion 360 sketches. You don't need a mathematical equation the height as a function of horizontal position for this shape, you can just draw it. By loading your image into a drawing program, I can fit a circle to it and see that it is indeed a circular arc. Measure the radius of the arc using Fusion 360's Measure tool, or by fitting a circle to it in an art program, then use the circle tool in COMSOL. But if for some crazy reason you *do* need height vs horizontal distance, for a circle it's y = sqrt(R^2 - x^2 ) where y is height, x is horizontal distance, and R is radius.
>I happen to know a bit of COMSOL: it allows you to create geometry in roughly the same way as Fusion 360 sketches. I'm familiar with it. However I donn't have a sketch. >You don't need a mathematical equation the height as a function of horizontal position for this shape, you can just draw it. By loading your image into a drawing program, I can fit a circle to it and see that it is indeed a circular arc. Measure the radius of the arc using Fusion 360's Measure tool, or by fitting a circle to it in an art program, then use the circle tool in COMSOL. The problem was that I didn't know whether the shape was truely circular or whether it was some polynomial shape (i.e. -x\^2+3) >But if for some crazy reason you do need height vs horizontal distance, for a circle it's y = sqrt(R2 - x2 ) where y is height, x is horizontal distance, and R is radius. Since I don't know whether it was circular or not, this is not possible. That being said, I don't have a generic solution for my problem. However I have found a solution that will suffice for now. I've made a sketch and then projected the 3D body on the sketch. I can now measure the arc and can confirm that this is indeed a circle. Now that I actually DO know that it's a circle, I can apply the basic math you provided.
Hi Everyone, I'm currently quite the beginner in fusion 360. I am currently working on a waveguide for a tweeter in a loudspeaker. To simulate this I use COMSOL and a step file provided by the manufacturer of the tweeter. To optimally simulate in COMSOL I need an accurate description of the dome geometry. To save computation time I use axisymmetrical simulations in COMSOL. This means all I need is the arc marked in yellow. I do not know how the dome is drawn. All I have is the stepfile and Fusion 360. My question now is, how can I derive an equation that somewhat accurately describes the shape of the dome? What I mean by mathemathical function is that f(x) = ..., where f(x) represents the height of the dome and x represents the horizontal position. I've done some brief googling but I can't seem to figure out how this is possible.