I have a mechanical assembly like such in the attached image. Here, the pink (frame) and the grey (bracket) are to be attached using bolts as in the image. Now to simplify the model I will be deleting the 3D bolts in place of which I will be using 1D rigid elements. Now, my doubt is after connecting the structures with 1D bolts should I define a contact between the touching surfaces of the bracket and frame? Or just connecting with rigids (1D bolts) is sufficient? Please do help with insights

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