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In a metal forming operation when the material has just started yielding, the principal stresses are σ1 = +180 MPa, σ2 = -100 MPa, σ3 = 0. Following Von Mises criterion, the yield stress is ________ MPa.
    Correct answer is between '245,246'. Can you explain this answer?
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    Calculation of Yield Stress using Von Mises Criterion:
    - Given Principal Stresses:
    - σ1 = +180 MPa
    - σ2 = -100 MPa
    - σ3 = 0 MPa
    - Von Mises Criterion:
    - According to Von Mises criterion, the yield stress is given by:
    - σy = √(σ1^2 - σ1σ2 + σ2^2)
    - Calculation:
    - Substitute the given principal stresses into the formula:
    - σy = √((180)^2 - (180)(-100) + (-100)^2)
    - σy = √(32400 + 18000 + 10000)
    - σy = √60400
    - σy ≈ 245.88 MPa
    Therefore, the yield stress calculated using the Von Mises criterion is approximately 245.88 MPa.
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    In a metal forming operation when the material has just started yielding, the principal stresses are σ1 = +180 MPa, σ2 = -100 MPa, σ3 = 0. Following Von Mises criterion, the yield stress is ________ MPa.Correct answer is between '245,246'. Can you explain this answer?
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