Question

A stress is suddenly applied to a muscle and then held constant while strain and strain‐rate are measured (see right figure). The phenomenon explaining the measured strain is called __________________. As the stress is maintained and the strain reaches steady state __________________ stresses dominate the total stress.

   a. Stress‐relaxation, elastic

b. Stress‐relaxation,  viscous

c. Creep,   viscous

d. Creep, elastic

Answer 1

Stress relaxation is a time-dependent decrease in stress under a constant strain.Stress relaxation is a gradual decrease in stress under a continuous strain.

creep is a measure of increase in strain with time under a constant stress.

elastic stress is due to the amount of deformation (strain), while viscous stress is due to the rate of change of deformation over time (strain rate).

so,The answer is Creep , elastic