Development of a micromechanical continuum damage model of ferroelectric ceramics for the prediction of lifetime at cyclic loading

开发铁电陶瓷的微机械连续损伤模型，用于预测循环负载下的寿命

• 批准号: 194824543
• 负责人: Professor Dr.-Ing. Andreas Ricoeur
• 金额: --
• 依托单位: Fachgebiet Technische Mechanik/Kontinuumsmechanik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2011
• 资助国家: 德国
• 起止时间: 2010-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/194824543?language=en
• 关键词: Development; micromechanical; continuum; damage; model

Most ferroelectric multifunctional materials are brittle ceramics, which are predominantly applied in actuators and sensors. There, they are supposed to sustain many millions of load cycles without failure and fracture. Models are developed to understand the parameters influencing damage, and finally to optimize actuatoric devices with respect to their lifetime. They enable predictions of both damage processes and functional properties. Based on calculations and computer simulations, mechanisms of damage are investigated and measures are elaborated increasing life time without deteriorating the actuatoric properties.

铁电多功能材料多为脆性陶瓷，主要应用于执行器和传感器。在那里，它们应该能承受数百万次的载荷循环而不发生故障和断裂。模型的开发，以了解参数的影响损害，并最终优化致动器设备相对于其寿命。它们能够预测损伤过程和功能特性。在计算和计算机模拟的基础上，研究了损坏的机理，并提出了在不降低致动器性能的情况下提高寿命的措施。

项目成果

Influence of inclined electric fields on the effective fracture toughness of piezoelectric ceramics

• DOI: 10.1007/s00707-014-1190-5
• 发表时间: 2015-02
• 期刊: Acta Mechanica
• 影响因子: 2.7
• 作者: A. Ricoeur;R. Gellmann;Zhibin Wang

High cycle fatigue damage and life time prediction for tetragonal ferroelectrics under electromechanical loading

机电载荷下四方铁电体的高周疲劳损伤和寿命预测

• DOI: 10.1016/j.ijsolstr.2015.11.003
• 发表时间: 2016
• 期刊: International Journal of Solids and Structures
• 影响因子: 3.6
• 作者: S. Lange;A. Ricoeur
• 通讯作者: A. Ricoeur

Continuum damage model for ferroelectric materials and its application to multilayer actuators

• DOI: 10.1088/0964-1726/25/5/055045
• 发表时间: 2016-04
• 期刊: Smart Materials and Structures
• 影响因子: 4.1
• 作者: R. Gellmann;A. Ricoeur

Effective properties of cracked piezoelectrics with non-trivial crack face boundary conditions

具有非平凡裂纹面边界条件的裂纹压电体的有效特性

• DOI: 10.1007/s00419-016-1118-8
• 发表时间: 2016
• 期刊: Archive of Applied Mechanics
• 影响因子: 2.8
• 作者: E. Merkel;A. Ricoeur
• 通讯作者: A. Ricoeur