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Combined Loading Test

Combined Loading Test. Perform Bending Only Test to obtain Elastic Modulus and Poisson’s Ratio Compare the materials properties Perform Combined Loading Test Do Stress Analysis, and compute Principal Stresses and Orientation Do Strain Analysis, and compare strains calculated from stresses.

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Combined Loading Test

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  1. Combined Loading Test • Perform Bending Only Test to obtain Elastic Modulus and Poisson’s Ratio • Compare the materials properties • Perform Combined Loading Test • Do Stress Analysis, and compute Principal Stresses and Orientation • Do Strain Analysis, and compare strains calculated from stresses

  2. Combined Loading

  3. Both Bending & Torsion

  4. Stresses and Strains

  5. Conduct the Combined Loading Test Please initialize the Strain Meter a couple of times to ensure that it indicates zero strains at zero load, and that there is NO DRIFT with time

  6. Bending Only (Equations) M = F * Lbend x = FLbendc/I c = D/2 I = D4/64

  7. Bending Only (Spreadsheet)

  8. Elastic Modulus

  9. Poisson’s Ratio

  10. Properties (Bending Only)

  11. Combined Loading(Stress Analysis) x = F * Lbend * c/I z = 0 xz = F * Larm * c/J

  12. Stress Analysis (Spreadsheet)

  13. Strain Analysis (Equations) x = x / E z = -  * x xz = xz / G

  14. Strain Analysis (Spreadsheet)

  15. Longitudinal Strain (Plot)

  16. Transverse Strain (Plot)

  17. Shear Strain (Plot)

  18. Lab #6 Spreadsheet (1 page)

  19. Lab #6 Report due Next Week • Cover Page + Abstract • Data Sheet • Spreadsheet including Material Properties • Plot #1: Elastic Modulus • Plot #2: Poisson’s Ratio • Plot #3: Axial Strains • Plot #4: Transverse Strains • Plot #5: Shear Strains • Comments and Conclusions

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