Based on non-local theory, the damage variable is non-local variable and is dependent on local damage variable and its second spatial gradient.

基于非局部理论，将损伤变量作为非局部变量，它与局部损伤变量及其二阶梯度有关。

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Based on non-local theory, the damage variable is non-local variable and is dependent on local damage variable and its second spatial gradient.

基于非局部理论，将损伤变量作为非局部变量，它与局部损伤变量及其二阶梯度有关。

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