Question

Create stress mohr circle based on these values and determine principal stress and maximum shear stress. Also describe the loading condition that produced these data. Determine the strain is present if stressx= 100MPa, stressy= -50MPa, stressxy= 30MPa. Assume aluminum alloy

Hooke's Law The free-surface of a structure is in plane stress if gravity and other body forces are neglected. Because there are 3 unknowns (σ, oy, t»), 3 measurements are generally required in order to determine the stress or strain at a point. For that reason, strain gage rosettes have 3 elements and are used if the orientation of the principal stresses is unknown. Two basic rosette designs are used: each element is aligned at either 45 or 60 degrees from each other (depending upon which of the two designs). 7) The rosette shown below (elements at 45 degrees) was used to measure the strain on an aluminum bar resulting in: Gage 1 : 6215με Gage 2:-61 34με Gage 3 (the middle gage): 4241e where 1 HE 10 in/in Create stress Mohr's circle based on these values and determine principal stress and maximum shear stress. I suspect this is something you'll have to look up- be sure you use equations appropriate for this design and not for the 60 degree rosette design. Also describe the loading condition that produced these data. SGD-1/120-RYT21 Figure 2-3 Strain Gage Rosette Determine the strains present ifơ.-100MPa, ơ,--50 MPa, ty-30MPa. Assume aluminum alloy.

Answer 1