The stress σ in a truss element is given by ____
a) σ=E
b) σ=ε
c) σ=Eeε
d) σ=α
Answer: c
Explanation: Stress is a physical quantity that expresses the internal forces that neighboring the particles of a continuous material exert on each other. Expression for element stresses can be obtained by noting that a truss element in local co-ordinates is simple two- force member.
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