FRACTURE PARAMETERS EVALUATION FOR THE CRACKED NONHOMOGENEOUS ENAMEL BASED ON THE FINITE ELEMENT METHOD AND VIRTUAL CRACK CLOSURE TECHNIQUE

IF 10.1 2区工程技术 Q1 ENGINEERING, MECHANICAL

Facta Universitatis-Series Mechanical Engineering Pub Date : 2023-08-10 DOI:10.22190/fume210619072c

Y. Cai, Liming Zhou, Ming Li

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引用次数: 1

Abstract

To accurately solve the fracture parameters of enamel, we have established computational nonhomogeneous enamel models and constructed the fracture element of enamel dumb nodes, based on the enamel mineral concentration, nonhomogeneous mechanical properties, and virtual crack closure technique. Through the commercial finite element software ABAQUS and the fracture element of the enamel dumb nodes, we have established the user subroutines UMAT and UEL, which enabled solving of the energy release rates of the nonhomogeneous enamel structure with cracks. The stress intensity factors of central cracks, three-point bend and compact stretched enamels, and double-edge notched stretched enamels are determined. By comparing them with analytical solutions, we have proved that the fracture element of the enamel dumb nodes is highly accurate, simple, and convenient. In addition, the cracks can be other elements rather than singular or special elements; they show versatility and other advantages. The stress intensity factor of the dental enamel can be solved more realistically. Thus, a new numerical method for prevention and treatment of dental diseases is provided.

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基于有限元法和虚拟裂纹闭合技术的非均匀牙釉质裂纹断裂参数评估

为了准确求解牙釉质的断裂参数，基于牙釉质矿物浓度、非均质力学性能和虚拟裂纹闭合技术，建立了计算非均质牙釉质模型，构建了牙釉质哑节点断裂单元。通过商用有限元软件ABAQUS和釉质哑节点断裂单元，建立了用户子程序UMAT和UEL，实现了含裂纹的非均质釉质结构能量释放率的求解。确定了中心裂纹、三点弯曲紧致拉伸瓷釉和双面缺口拉伸瓷釉的应力强度因子。通过与解析解的比较，证明了牙釉质哑结的断裂单元具有较高的准确性、简单性和方便性。此外，裂缝可以是其他元素而不是单一或特殊元素;它们表现出多功能性和其他优点。牙釉质的应力强度因子可以更真实地求解。从而为预防和治疗牙病提供了一种新的数值方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Facta Universitatis-Series Mechanical Engineering ENGINEERING, MECHANICAL-

CiteScore

14.40

自引率

2.50%

发文量

审稿时长

6 weeks

期刊介绍： Facta Universitatis, Series: Mechanical Engineering (FU Mech Eng) is an open-access, peer-reviewed international journal published by the University of Niš in the Republic of Serbia. It publishes high-quality, refereed papers three times a year, encompassing original theoretical and/or practice-oriented research as well as extended versions of previously published conference papers. The journal's scope covers the entire spectrum of Mechanical Engineering. Papers undergo rigorous peer review to ensure originality, relevance, and readability, maintaining high publication standards while offering a timely, comprehensive, and balanced review process.

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