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Anonymous
Anonymous asked in 科學及數學其他 - 科學 · 7 years ago

Stress strain question

1 Answer

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  • 天同
    Lv 7
    7 years ago
    Favorite Answer

    (a) Toughness is the ability of a material to absorb energy and plastically deform without fracturing.

    Ductility of a solid material is its ability to deform under tensile stree.

    (b) Maximum strain = 6/250 = 0.024

    (c) Cross-sectional area of rod = pi x 0.003^2 m^2 = 2.827x10^-5 m^2

    Stress = 500 000/2.827x10^-5 N/m^2 = 1.768 x 10^10 N/m^2

    Strain = 2/500 = 4x10^-3

    Modulus of elasticity = 1.768x10^10/4x10^-3 N/m^2 = 4.42 x 10^12 N/m^2

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