🚀 go-pugleaf

Not exactly sure what you mean by 3D, but this will give you lines that curve progressively toward the edges. 

This might get a little complicated but here goes: 

1. first create a circle. 2. make a guideline at the exact center (vertical in this example) 3. Using your direct selection tool, click on one node of the circle, either east or west. Add another layer and lock off the first one. Press CNTRL - F to paste half the circle in front. 4. create a line that runs from pole to pole. the line should have three points: two endpoints and a mid point. Make the mid point with handles and use the shift key to constrain them to be parallel to the line. Have the handles extend at least over 75% of the line. 5. Set your blend options for whatever number of intermediate lines you want, say 8. 6. Select the line and the half circle and create the blend. 

From here it's just a matter of copying and pasting and rotating to get the other 3 quadrants. 

I just did this in AI 10 but it should work the same in 9. 

Regards, ~m