When planes get damaged like a wing gets hit from below it would bend upward from its connection points. Also parts are less likely to expload. They would be more likely to snap off because very few impacts would cause a wing to expload on the spot. A wing would be more likely to rip off if a cannon or another wing hit it instead of just exploding.
If a prop strikes the ground it would bend in or out depending on their location if the blades were wood they would snap leaving the center behind.