While parking your car, you accidentally back into a steel post. You pull forward until the car no longer touches the post and then get out to inspect the damage. What does your rear bumper look like if the strain in the impact was (a) less than at the proportional limit; (b) greater than at the proportional limit but less than at the yield point; (c) greater than at the yield point but less than at the fracture point; and (d) greater than at the fracture point?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
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While parking your car, you accidentally
back into a steel post. You pull forward until the car no longer touches the post and then get out to
inspect the damage. What does your rear bumper look like if the strain in the impact was (a) less
than at the proportional limit; (b) greater than at the proportional limit but less than at the yield
point; (c) greater than at the yield point but less than at the fracture point; and (d) greater than at the
fracture point?

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