Ferroelectric ceramics: experiments, constitutive modeling and finite element simulation
In this paper, we will first discuss the typical hysteresis properties observed with ferroelectric materials in relation to the underlying domain switching processes. Then, we will present an experimental investigation determining the critical states of combined coaxial electrical and mechanical loading needed to initiate domain switching processes (switching criterion). Next, we will present a micromechanical finite element simulation of a ferroelectric volume element, where each grain exhibits the single crystal behavior for the switching of its domains. Finally, we will introduce a micromechanically based constitutive model, which relies on internal variables representing an approximate distribution orientation function of the micro-dipoles. This constitutive model allows for the finite element analysis of the poling process of piezoceramic devices.
Marc Kamlah Da-yu Zhou Bernd Laskewitz
Forschungszentrum Karlsruhe, Institute for Materials Research Ⅱ, 76021 Karlsruhe, Germany
国际会议
The 5th International Conference on Nonlinear Mechanics(第五届国际非线性力学会议)
上海
英文
1572-1576
2007-06-11（万方平台首次上网日期，不代表论文的发表时间）