The behavior of a polymer is described by a Maxwell model consisting of a spring element of modulus 109 Pa connected in series with a dashpot of viscosity 1011 Pa.s. At time t = 0 s, there is a sudden application of a fixed strain of 1 %. a) Sketch the strain-vs-time and stress-vs-time plots of the Maxwell material b) b) Calculate the overall stress of the system at time t = 70 s using the Maxwell equation

7. The behavior of a polymer is described by a Maxwell model consisting of a spring element of modulus 109Pa connected in series with a dashpot of viscosity 1011Pa.s. At time t=0s, there is a sudden application of a fixed strain of 1%. a) Sketch the strain-vs-time and stress-vs-time plots of the Maxwell material. b) Calculate the overall stress of the system at time t=70s using the Maxwell equation