功能梯度压电材料涂层在球形压头作用下的接触问题研究

来源 :2014年全国固体力学学术大会 | 被引量 : 0次 | 上传用户:abc37562735
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  功能梯度压电材料(Functionally Graded piezoelectric materials,FGPMs)是一种材料弹性参数和电学参数沿某一方向连续变化的复合压电材料。其具有传统压电材料特性,能够实现机械能和电能间的相互转化的特性。由于传统压电材料为为了获得更大的位移和驱动力而采用的多层结构,往往会在不同层间界面处存在材料的失配,从而导致界面处开裂,蠕变和脱落,进而大大影响了器件的稳定性,缩短器件的寿命,难以应用在要求高可靠性的结构和系统中。功能梯度压电材料所具有材料参数连续变化的特点,能够消除由于界面参数不匹配而导致的界面破坏。
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