1. MEE …. WAVE PROPAGATION IN SOLIDS
Week 2-Strings
Assoc. Prof. Dr. Abdullah Seçgin

2. MATERIALS ARE EXTRACTED FROM THE BOOK OF

5. Phase and group velocity

6. NON-
Wave form does not change during propagation

7. Wave form changes during propagation

8. Workshop:
-Find the coefficients A1 and B1
-Determine the dispersion relation
-What is phase velocity
-What is group velocity

12. Example:
T (tension)
A string
Spring R I
Boundary

13. Workshop:
For this case
-Determine the dispersion relation
-What is phase velocity
-What is group velocity

15. Workshop:
-Find the reflection and transmission coefficient of the string having discontinuities at one point
1) Velocity is continous at boundary
2) Vertical force is continous
Reflection
coefficient (r=g2/f1)
Transmission coefficient (t=f2/f1)

16. Homework:
-Find the reflection and transmission coefficients of the following system m

17. Learning Outcomes:
-Writing string wave equation
-Solution of the string wave equation
-Dispersion relation of the taut string
-Phase and group velocities of the taut string
-Boundary condition implementation
-Reflection and transmission of a taut spring