MATERI PUNTIRAN ATAU TORSI MESIN.pptx

MATERI PUNTIRAN ATAU TORSI MESIN.pptx

1. Puntiran / Torsi

2. Torsi Dua buah torsi yang bekerja pada sebuah batang akan menghasilkan distribusi tegangan geser ( ) di sepanjang batang . (Gambar 1.19) Besar distribusi tegangan geser yang terjadi dapat diilustrasikan pada gambar 1.20

3. Tegangan Geser Dimana  = Tegangan geser T = Torsi r = Jari jari J = Momen Inersia Polar

4. Contoh

5. Contoh

6. Deformasi Dimana  = Deformasi T = Torsi L = Panjang batang G = Modulus Elastisitas Geser J = Momen Inersia polar

7. Contoh

8. Contoh

9. Thin walled tubes Am

10. Thin walled tubes

11. Torsi

12. Angle of Twist

13. Power Transmitted by The Shaft A shaft rotating with a constant angular velocity ( in radians per second) is being acted by a twisting moment T. The power transmitted by the shaft is Where T is the torque in N-m, f is the number of revolutions per second, and P is the power in watts

14. Solved Problems

15. Solved Problems

16. Solved Problems 1 HP = 6600 lb in/s

17. Solved Problems

18. Solved Problems

19. Solved Problems