Untersuchung des mehrachsigen elektro-mechanischen Materialverhalten von ferroelektrischen Keramiken

铁电陶瓷多轴机电材料行为的研究

• 批准号: 5397369
• 负责人: Professor Dr.-Ing. Marc Kamlah
• 金额: --
• 依托单位: The State Key Laboratory of Mechanical Structural Strength and Vibration
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2009-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5397369?language=en
• 关键词: Untersuchung; des; mehrachsigen; elektro; mechanischen

Multi-axial electromechanical constitutive behavior of ferroelectric ceramic solids will be investigated by the method of experiment. Tension-torsion and bi-axial tension tests will be performed on tubular and planar specimens, respectively. Effect of the multi-axial mechanical loading upon the electric behavior will be quantified, in terms of the stress-strain curves, the electric field-electric displacement curves and, most importantly, the electromechanical "yield surface". These multi-axial results, once available, are the basis for future development of phenomenological constitutive laws and for further study of the sensitivity of ferroelectric solids to flaws.

采用实验方法研究了铁电陶瓷固体材料的多轴机电本构行为。将分别对管状和平面样本进行拉伸-扭转和双轴拉伸试验。多轴机械载荷对电行为的影响将被量化，在应力-应变曲线，电场-电位移曲线，最重要的是，机电“屈服面”。这些多轴的结果，一旦可用，是唯象本构关系的未来发展和进一步研究的铁电固体的缺陷的敏感性的基础。