Explore BrainMass
Share

Explore BrainMass

    Stress relaxation time

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    An applied strain of 0.5 produces an immediate stress of 2 MPa in a piece of rubber, but after 10 days, the stress is only 1 MPa. For the following, assume the material obeys a single-exponential relaxation process.
    a) What is the relaxation time?
    b) What is the stress after 100 days?

    © BrainMass Inc. brainmass.com October 10, 2019, 7:55 am ad1c9bdddf
    https://brainmass.com/engineering/materials-engineering/stress-relaxation-time-600252

    Solution Preview

    Initial stress, 0 = 2 MPa
    At t = 10 days, stress, (10) = 1 MPa ...

    Solution Summary

    For single exponential process, relaxation time and stress at a given time are estimated.

    $2.19