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· Most applications of engineering
materials require them to stay in their elastic range.
· When a material is used in tensile loading,
the component dimension, (L, A), the maximum load, F, and the allowed maximum
strain, δL, are specified design quantities
which control the material choice for a Light-Strong structure.
· The configuration of a tensile strut
is shown opposite. In the elastic range the system response to an applied
tensile force can be described by Hooke's law: σ = E ε.
· For the strut: σ= F/A, ε = δL/L, and the strut mass,
m = ρAL.
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