The state of stress at point A of the wind turbine shaft is shown in the...

 

Transcribed Image Text:

The state of stress at point A of the wind turbine shaft is shown in the figure. The cross section of the shaft is circular and the radius is constant through the length and it is identified with Rhan in the table below. The state of stress value belong to the load case that only covers torsion and axial load (in other words, stress components are formed due to the effects of axial load and torsion). a. Determine the value of axial force NA and torque, T₁ (kNm) at point A. (8 Points) b. Determine the equivalent state of stress on the element at the same point A which represents the principal stresses. (6 Points) c. Determine the equivalent state of stress on the element at the same point A the max. in-plane shear stress and the associated average normal stress. (6 Points) Note: Point A is located on the centroid of the circular shaft. Consider the stress directions given in the figure below carefully. A Results table NA (KN)= TA (KNM)= 61 (MPa)= 6₂ (MPa)= Gang (MPa)= Tmax, in-plane (MPa)= A X Txy ox:60 Mpa TXy:40 Mpa Rshaft: 800mm The state of stress at point A of the wind turbine shaft is shown in the figure. The cross section of the shaft is circular and the radius is constant through the length and it is identified with Rhan in the table below. The state of stress value belong to the load case that only covers torsion and axial load (in other words, stress components are formed due to the effects of axial load and torsion). a. Determine the value of axial force NA and torque, T₁ (kNm) at point A. (8 Points) b. Determine the equivalent state of stress on the element at the same point A which represents the principal stresses. (6 Points) c. Determine the equivalent state of stress on the element at the same point A the max. in-plane shear stress and the associated average normal stress. (6 Points) Note: Point A is located on the centroid of the circular shaft. Consider the stress directions given in the figure below carefully. A Results table NA (KN)= TA (KNM)= 61 (MPa)= 6₂ (MPa)= Gang (MPa)= Tmax, in-plane (MPa)= A X Txy ox:60 Mpa TXy:40 Mpa Rshaft: 800mm