ABSTRACT In addition to strain, inelastic strain energy is often used for estimating damage due to inelastic deformation. In order to compare with the approach using inelastic strain, rupture strain energy density was modelled as a function of temperature and strain rate or energy density rate for four materials, using similar equations. It was found that these energy-based approaches provide an equally good performance in modelling the temperature- and strain rate-dependency of rupture energy density as in the strain-based approach. Using the equivalent stress vs. equivalent strain rate relations developed in the companion paper simultaneously, the rupture energy density under various conditions could be estimated with a reasonable accuracy. It was also found that the employment of a common value for the thermal activation energy for all materials does not deteriorate the quality of modelling significantly thus allowing a direct comparison of the characteristics of different materials on the same ground.

中文翻译：

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金属材料在较宽温度和载荷条件范围内的断裂延展性建模，第二部分：与基于应变能的方法的比较

摘要 除了应变，非弹性应变能通常用于估计非弹性变形造成的损伤。为了与使用非弹性应变的方法进行比较，使用类似的方程将破裂应变能量密度建模为四种材料的温度和应变率或能量密度率的函数。发现这些基于能量的方法在模拟破裂能量密度的温度和应变率依赖性方面提供了与基于应变的方法同样良好的性能。同时使用在配套论文中开发的等效应力与等效应变率关系，可以以合理的精度估计各种条件下的破裂能量密度。