Engineering, 14.12.2019 02:31 natnat55
Amechanical component is subjected to simultaneous axial, bending, and torsion loads so that the following stresses are predicted at its critical point:
β constant thrust (axial) stress 0 mpa
β bending stress in the range β35 to 175 mpa
β torsion with a mean stress 105 mpa and a superposed stress 12.6 mpa alternating in phase with the bending stress (their minimum and maximum values occur simultaneously).
the component has a notch with kfβaxial=1.1,kfβbending=1.4,kfβtors ion=2. the material is steel with sy=300,sut=400,se=200 mpa (including modifying factors).
calculate:
β the (static) yield safety factor Ξ·y.
β the fatigue safety factor Ξ·f for infinite life, using the modified goodman criterion.
Answers: 3
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Amechanical component is subjected to simultaneous axial, bending, and torsion loads so that the fol...
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