000004690 001__ 4690
000004690 005__ 20141119144545.0
000004690 04107 $$aeng
000004690 046__ $$k2002-06-02
000004690 100__ $$aZeng, Wenjun
000004690 24500 $$aA NONLINEAR FULLY COUPLED ELECTRO-THERMO-MECHANICAL ANALYSIS OF PIEZOELECTRIC MATERIALS INVOLVING DOMAIN SWITCHING

000004690 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004690 260__ $$bColumbia University in the City of New York
000004690 506__ $$arestricted
000004690 520__ $$2eng$$aThis Coupling of electrical, mechanical and thermal effects is a natural outcome of the general formulation of the response of piezoelectric materials to mechanical loading, electrical fields, or thermal gradients. The presence of polarization vector in the equations for balance of linear momentum makes them inherently nonlinear. Moreover, domain switching is the cause of significant nonlinearity in the response of piezoelectric materials to mechanical and electrical effects. In this paper, the response of piezoelectric solid is formulated by coupling thermal, electrical, and mechanical effects. The constitutive equations are nonlinear. The resulting governing equations become highly nonlinear. The corresponding nonlinear finite element equations are derived and solved by using an incremental technique. The developed formulation is first verified against a number of benchmark problems for which a closed-form solution exists. Next, a cantilever beam made of PZT-4 is studied to evaluate the effect of domain switching on the overall force-displacement response of the beam. A number of interesting observations are made with respect to the extent of nonlinearity and its progressive spread as the load on the beam increases.

000004690 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004690 653__ $$aDomain switching, Piezoelectricity, Finite element, Nonlinear Analysis.

000004690 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004690 720__ $$aZeng, Wenjun$$iManzari, Majid T.$$iLee, James D.$$iShen, Yin-Lin
000004690 8560_ $$ffischerc@itam.cas.cz
000004690 8564_ $$s122619$$uhttp://invenio.itam.cas.cz/record/4690/files/179.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004690 962__ $$r4594
000004690 980__ $$aPAPER