Advice: Each time you see Strain in a book, result, manual,…… ask your self ¿Which strain are you talking about? . Finite Element Analysis has many (more than 10) different Strain measures.
¿What does “displacement” of 25% means?.
¿What does “strain” shown in your graph means?.
¿What kind of strain are you providing below the *PLASTIC card?
¿What kind of strain are you reading in your results file?