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Which relations are used in one dimensional finite element modeling?

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in Finite Element Method by (110k points)
Which relations are used in one dimensional finite element modeling?

(a) Stress-strain relation

(b) Strain-displacement relation

(c) Total potential energy

(d) Total potential energy; Stress-strain relation; Strain-displacement relation.

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This intriguing question comes from One Dimensional Problems in chapter One Dimensional Problems of Finite Element Method

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Correct choice is (d) Total potential energy; Stress-strain relation; Strain-displacement relation.

To explain I would say: The basic procedure for a one dimensional problem depends upon total potential energy, stress-strain relation and strain-displacement relation are used in developing the finite element modeling.

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