SpaceX is designing (fictional scenario) a new generation of the spacecraft in which they want to...

 

Transcribed Image Text:

• SpaceX® is designing (fictional scenario) a new generation of the spacecraft in which they want to reduce the weight of the skin by using more composite material. In order to do this, the direction of the carbon fiber strands are going to be placed in the layered composite so that they are oriented in the direction of the maximum principal stress. Data from strain gages placed on the skin of similarly shaped structure as shown results in the maximum stresses during flight given below. Draw Mohr's Circle for stresses in the plane of the skin determined from the strain gage data: ox 45 ksi, oy 10 ksi, Txy = 20 ksi = Identify/calculate principle stresses Identify/calculate the angle and direction of rotation to achieve maximum normal stress orientation. Demonstrate by drawing 2D stress element at new orientation wrt original orientation. Identify/calculate the angle and direction of rotation to achieve. maximum in-plane shear stress orientation. Demonstrate by drawing 2D stress element at new orientation wrt original orientation Properly label and annotate your drawings. Strain gage size: enlarged for clarity. • SpaceX® is designing (fictional scenario) a new generation of the spacecraft in which they want to reduce the weight of the skin by using more composite material. In order to do this, the direction of the carbon fiber strands are going to be placed in the layered composite so that they are oriented in the direction of the maximum principal stress. Data from strain gages placed on the skin of similarly shaped structure as shown results in the maximum stresses during flight given below. Draw Mohr's Circle for stresses in the plane of the skin determined from the strain gage data: ox 45 ksi, oy 10 ksi, Txy = 20 ksi = Identify/calculate principle stresses Identify/calculate the angle and direction of rotation to achieve maximum normal stress orientation. Demonstrate by drawing 2D stress element at new orientation wrt original orientation. Identify/calculate the angle and direction of rotation to achieve. maximum in-plane shear stress orientation. Demonstrate by drawing 2D stress element at new orientation wrt original orientation Properly label and annotate your drawings. Strain gage size: enlarged for clarity.