Understand spaghetti dynamics
1.
1. Context Context
During many years, breaking a spaghetti in half by bending it evenly from both ends intrigued many scientists : they conjectured that it wasn’t possible.
Recently, two MIT students, Heisser and Patil, succeeded to break spaghetti in two.
3. … A twist must
3. … A twist must be be added added
Valentine SOTO & Emilie DRAPEAU
2.
2. Bending Bending isn’t isn’t the solution… the solution…
A. Our
A. Our experiment experiment
Usually, spaghetti break into at least three parts
0 5 10 15 20 25 30 35 40 45
2 3 4 5 6
Number of bent spaghetti
Number of parts of a bent spaghetti
B.
B. Their Their experiment experiment
MIT machine which :
-twists the spaghetti at almost 360 degrees -slowly bends it to its breaking point
One fracture : correction of the snap-back
effect
Eff. Stress (N/m²)
After the twist
B.
B. Their Their experiment experiment
Before the first fracture
Succession of fractures : snap-back effect
Eff. Stress (N/m²)
Eff. Stress (N/m²)
effect
Eff. Stress (N/m²)
44. Conclusion . Conclusion
-The bending experiment explains why scientists venture their hypothesis.
-MIT students approached this issue in a different way and consequently solved it.
-This research is useful to understand the mechanics of fractures of long, thin and cylindrical rods such as spaghetti.
http://news.mit.edu/2018/mit-mathematicians-solve-age-old-spaghetti-mystery-0813 https://www.today.com/food/how-break-spaghetti-two-pieces-according-mit-study-t135681
