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本文提出了一个根据载荷-载荷点位移曲线上的柔度变化测定铝合金J_(IC)的单试样法和计算J积分公式: 实验结果表明:使用这种方法测得的J_(IC)值与用多试样法测得结果符合。使用上述公式计算的J_(IC)值和用J=(1+α)/(1+α~2)-2A/B(w-α)计算的结果相一致。
In this paper, a single sample method and J integral formula for determining the J_ (IC) of aluminum alloy according to the variation of the load-displacement curve are presented. The experimental results show that the J_ (IC) With the multi-sample method measured results in line. The J_ (IC) value calculated using the above formula agrees with the result calculated using J = (1 + α) / (1 + α ~ 2) -2A / B (w-α).