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2015-09-15T21:55:32+05:30

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Plastic Section Modulus = Zp = 5 * 10⁻⁴ m³
     Shape factor k = Zp / S  = 1.2
     So    S  = elastic section modulus = Zp / k = 4.17 * 10⁻⁴ m³

Plastic Moment Capacity = Mp = 120 kN-m
Fy = Yield strength of the material or Yield stress of the material

                 Mp = Fy * Zp

Fy = yield stress = 120 * 10³ /5 * 10⁻⁴ = 240 * 10⁶ N/m²
     = 240 N / mm²           as  mm = 10⁻³ m 
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