I'm going to make a shape that looks like speed bumps. Make sure that the edges of the object are rounded as shown in the following picture:

However, in order to bend an object using Simple deform, the object must be subdivided, which does not apply to the internal side, as shown in the following picture:

Is there a good way to bend these objects without loss of volume and corner vertex roundness?
blender 2.80, Used Solidify Modifier.




