On the basis of similar reports that have appeared within this Apple Support Community, unless the “bend” was detected at the time of purchase, Apple will not entertain that the bend will have spontaneously occurred- and will therefore classify the issue as damage.
If you have an active AppleCare+ plan, you might be able to claim one of your permitted “accidental damage” events; in this situation, you will pay a flat-rate “excess” to exchange your iPad for a same-model refurbished model. Outside of AppleCare, Apple might offer a chargeable exchange for a refurb device; if your damage qualities, costs are typically reported to be about 60% of the “as new” price.
You would be ill-advised to attempt self-repair of the physical damage. You may make matters worse - and potentially loose any goodwill from Apple.