[領域]塑性力學                             (題目相關領域)

[來源]課本習題                             (課本習題、考古題、參考書...)

[題目]For plane-strain deformation(dε2 and σ3=0),sketch the von Mises yield
      locus for the first quadrant in σ1-σ2 stress space.
      (a)Indicate how dε1 and dε2 would appear according to normality.
      (b)Determine the plastic work per unit volume as a function of principal
         stresses and strain increments.
      (c)Explain your answer in (b) with reference to the plot in (a).

我的解答:

(a)Indicate how dε1 and dε2 would appear according to normality.
   解: dε2 and σ3=0
   瓶頸: 要如何繪圖表示?
(b)Determine the plastic work per unit volume as a function of principal
   stresses and strain increments.
   解: dω=σ1dε1+σ2dε2+σ3dε3
        ∵dε2 and σ3 =0
        ∴dω = σ1dε1
(c)Explain your answer in (b) with reference to the plot in (a).
   解: dω = Fx dx
   瓶頸: 要如何繪圖表示呢?                   (寫寫自己的想法，方便大家為你解答)

以上瓶頸部份，麻煩版友們幫忙作解，謝謝!!

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