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现讨论原文提出的能量传递的概念和应变能的传递方式这两个问题。 (1) 第一个问题 原文作者说:“作者认为塑性区之所以能形成,就是因为此区域的应变能超过了材料的最大弹性应变能;而塑性区之所以能进一步扩大,是因为塑性区内不能储藏超过最大弹性应变能的能量(硬化体及非线性体例外),必然向周围的弹性区传递,使原来仍处于弹性工作的区域能量进一步增大,当总能量超过该区域材料的最大弹性应变能时,就变成了塑性区。”原作者的这种解释是错误的,这源于原作者所提出的应变能屈服准则不正确。 原作者提出的准则是(下列公式号码与原文同)
The two issues of the concept of energy transfer and the transfer of strain energy proposed in the original text are discussed. (1) The original author of the first question said: "The author believes that the plastic zone can be formed because the strain energy in this zone exceeds the maximum elastic strain energy of the material; and the plastic zone can be further expanded because of the plastic zone. It is not possible to store energy exceeding the maximum elastic strain energy (except for hardened bodies and non-linear bodies), and it is inevitably transmitted to the surrounding elastic region, which further increases the energy of the area that is still in elastic operation, when the total energy exceeds the maximum of the material in the region. When the strain energy is elastic, it becomes a plastic zone.” This explanation by the original author is wrong, which stems from the incorrectness of the strain energy yield criterion proposed by the original author. The original author’s criterion is (the following formula number is the same as the original)