1) This exerts forces or torques in mechanisms to absorb the energy from suddenl
ID: 1767493 • Letter: 1
Question
1) This exerts forces or torques in mechanisms to absorb the energy from suddenly applied loadsws 2) The diameter of the stock on which the screw thread is cut is called root Diameler 3. A YouJexscrew is used for raising weights or exerting forces in machines 4. The stress concentration factor for curvature of a spring is known as the 5. Unified Thread Classes 1A and 1B have the largest tolerances and the largest . However, Classes and-_ have the smallest tolerances and are used when of fit is essential. Because stress is larger on the inner edge of a spring coil and smaller on the outer edge, the appropriate 6. need to be applied to the equation for stress. . The mean value for the coefficient of friction for a screw is O.1S_ with a range of variation of +/- 33 percent.Explanation / Answer
4) Stress concentration factor for curvature of spring is known as wahl's correction factor. Wahl's correction factor accounts for shear on spring and stress concentraion due to change in curvature.
5) Classes 1A and 1B are highest tolerence and largest clearance threads. They are used for quick assembly and disassembly.
Classes 3A and 3B have smallest tolerence. They are used where closeness of fit is necessary.
6) To adjust the disparity of stress between inner and outer edge appropriate stress concentration factor is multiplied to the stress equation.
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