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Figure 42. The internal energy calculated to break the wood post is less than the kinetic energy reduction of the bogie. Graph.

This graph shows four distinct lines. The first line is solid black and is labeled Bogie Kinetic Energy Reduction while the second is black dotted and is labeled Post Cross-Sectional Force. The remaining two lines are both solid pink and are labeled Performance Envelopes. The vertical axis of this graph ranges from o to 10,000 and represents energy (kilonewton-millimeters) while the horizontal axis of this graph ranges from 0 to 200 and represents Deflection (millimeters). All four lines begin at the points of zero on both the vertical and horizontal axes. The solid black line runs in a continuous slope across the length of the graph where it leaves the graph at the points of 4,800 on the vertical axis and 200 on the horizontal axis. The black dotted line slopes upward to the points of 3,200 on the vertical axis and 195 on the horizontal axis where it ends. The first pink line slopes upward to the points of 5,000 on the vertical axis and 165 on the horizontal axis where it finds its end while the second pink line slopes up to the points of 3,800 on the vertical axis and 165 on the horizontal axis where it ends.

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