Error: Cut extrude feature failed -- for 2d part

[apal21]

Hello,

I am trying to make an array of narrow, straight cuts (as the two in the image below) in a rectangular 2d part made of shell elements.

However, I keep getting the error 'Cut extrude feature failed', or if I try using the Linear Pattern (see image below) or Translate features, I get 'Section must be closed for this type of feature'.

I don't understand what is going on. Can someone please help?

 

[FEA way]

Extruded cut can't be used for 2D parts but you can sketch the part already with cutouts or use Partition Face: Sketch option and then delete the newly created face (Geometry Edit --> Face --> Remove).

 

[apal21]

I tried your partition: Sketch approach (with Linear Array), but I got the following error:

 

[apal21]

Could you tell me how to go about sketching the part directly with cutouts?

 

[FEA way]

First approach (partition and removal):

Second approach (part drawn with cutouts already):