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In a machining operation chip thickness ratio is 0.3 and the back rake angle of the tool is 10°. What is the value of the shear strain?
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- 0.31
- 0.13
- 3.00
- 3.34
- 0.31
Correct Option: D
| r = 0.3 = | , α = 10° | |
| t2 |
| tanφ = | ||
| 1 - rsinα |
| tanφ = | ||
| 1 - 0.3sin10° |
φ = 17.3°
Shear strain = tan (φ – α) + cot φ
Shear strain = tan (17.3 – 10) + cot 17.3
Shear strain = 3.34
