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Question: a plastic specimen of rectangular cross a load history as...

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A plastic specimen of rectangular cross a load history as shown in Figure I (b) assumed to be described by the Maxwell model. Using the Boltz Superposition Principle, calculate the strain in the specimen: (c) -section, 5 mm x 2 mm, is subject ed to . The behaviour of the material may be mann (i) after 10 seconds; (ii) after 70 seconds; (iii) after 100 seconds. Data: spring constant () 20 GPa viscosity of the dashpot (n) 1000 GPa.s. (14)

8 8. 102030 40 50 60 70 80 90 100 Time (s) Figure 1 (b): Force history plot.

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