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首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.2; 20051026-28; Nanjing(CN) >Models of Damage Mechanisms and Process for Ceramics/Brittle Materials
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Models of Damage Mechanisms and Process for Ceramics/Brittle Materials

机译：陶瓷/脆性材料的损伤机理与过程模型

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摘要

The utilization of ceramics materials for structural components has been widespread because of their excellent properties such as high strength, rigidity and heat resistance etc. The grinding is the main productive technique for finishing the ceramic components in the manufacturing industry, but it is prone to surface and sub-surface damage. Consequently the induced damage will reduce the life of the component, even leads to failure. The features of grinding damage depend mainly on the mechanical properties and microstructure of ceramics, and grinding parameters. So, to improve grinding quality and reduce grinding damage, it is important to understand the damage mechanisms and process for ceramic materials. This paper intends to provide an overview of some models and to analyze damage mechanisms. Most researches on damage mechanisms or damage process for ceramics/brittle materials are based on continuum damage mechanics (CDM) theory. All the models of CDM are based on stress or on strain. This paper introduces mainly some researches about grinding damage of surface/subsurface for ceramics materials at home and abroad, and proposes some models and then gives comparative analysis of damage. In what follows, attempts are made to analyze ceramic grinding with damage model of CDM for grinding process. The research effort made may be the foundation of the ceramic components design and the optimization and control of ceramic grinding processes.
机译：陶瓷材料因其优异的性能（例如高强度，刚度和耐热性等）而广泛用于结构部件。在制造行业中，磨削是陶瓷部件精加工的主要生产技术，但它易于表面处理和表面下的损坏。因此，诱发的损坏将缩短组件的寿命，甚至导致故障。磨削损伤的特征主要取决于陶瓷的机械性能和微观结构以及磨削参数。因此，为了提高研磨质量并减少研磨损伤，了解陶瓷材料的损伤机理和过程非常重要。本文旨在概述一些模型并分析损坏机理。陶瓷/脆性材料的损伤机理或损伤过程的大多数研究都是基于连续损伤力学（CDM）理论。 CDM的所有模型都基于应力或应变。本文主要介绍了国内外有关陶瓷材料表面/亚表面磨削损伤的研究，提出了一些模型，并对损伤进行了比较分析。在下文中，尝试使用用于研磨过程的CDM损伤模型来分析陶瓷研磨。所做的研究工作可能是陶瓷组件设计以及陶瓷磨削过程的优化和控制的基础。

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