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An isotropic elasto-damage-plastic micromechanical framework of innovative pothole patching materials featuring high-toughness, low-viscosity nanomolecular resin
International Journal of Damage Mechanics ( IF 4.2 ) Pub Date : 2021-07-04 , DOI: 10.1177/10567895211028649
H Zhang 1 , J Woody Ju 1 , WL Zhu 1 , KY Yuan 2
Affiliation  

In a recent companion paper, a three-dimensional isotropic elastic micromechanical framework was developed to predict the mechanical behaviors of the innovative asphalt patching materials reinforced with a high-toughness, low-viscosity nanomolecular resin, dicyclopentadiene (DCPD), under the splitting tension test (ASTM D6931). By taking advantage of the previously proposed isotropic elastic-damage framework and considering the plastic behaviors of asphalt mastic, a class of elasto-damage-plastic model, based on a continuum thermodynamic framework, is proposed within an initial elastic strain energy-based formulation to predict the behaviors of the innovative materials more accurately. Specifically, the governing damage evolution is characterized through the effective stress concept in conjunction with the hypothesis of strain equivalence; the plastic flow is introduced by means of an additive split of the stress tensor. Corresponding computational algorithms are implemented into three-dimensional finite elements numerical simulations, and the outcomes are systemically compared with suitably designed experimental results.



中文翻译:

具有高韧性、低粘度纳米分子树脂的创新坑洼修补材料的各向同性弹塑性微机械框架

在最近的一篇配套论文中,开发了一种三维各向同性弹性微机械框架来预测用高韧性、低粘度纳米分子树脂双环戊二烯 (DCPD) 增强的创新沥青修补材料在劈裂张力试验下的力学行为(ASTM D6931)。通过利用先前提出的各向同性弹性损伤框架并考虑塑性沥青胶浆的行为是一种基于连续热力学框架的弹-损-塑性模型,在基于初始弹性应变能的公式中提出,以更准确地预测创新材料的行为。具体而言,通过有效应力概念结合应变等效假设来表征控制损伤演化;塑性流动是通过应力张量的附加分裂引入的。将相应的计算算法实现到三维有限元数值模拟中,并将结果与​​适当设计的实验结果进行系统比较。

更新日期:2021-07-05
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