dculp1
Mechanical
- May 16, 2006
- 75
I have a cylindrical cantilevered titanium rod whose cross section varies along its length. The rod vibrates axially at high frequency and so may fatigue. The free end of the rod has a static axial tensile force and also a static transverse force. These static forces may affect the fatigue life. If I want to use a Goodman diagram (mean stress on the horizontal axis, alternating stress on the vertical axis) to determine the possibility of failure:
Should I use the von Mises static stress as the stress for the horizontal axis? (The von Mises stress would give a composite value for the effect of both tensile and shear stresses.) If not the von Mises stress, then which stress?
Thanks.
Should I use the von Mises static stress as the stress for the horizontal axis? (The von Mises stress would give a composite value for the effect of both tensile and shear stresses.) If not the von Mises stress, then which stress?
Thanks.