by determining the zero-energy modes of piezoelectric multilayer element, eight stress modes on piezoelectric sub-element are obtained . 4 . a finite element program for piezoelectric laminates is developed, examples of the piezoelectric laminates are presented to identify the accuracy and the continuity of transverse stress 利用等函數(shù)方法推導(dǎo)了正交異性情況下的三維8節(jié)點(diǎn)單元所具有的應(yīng)力模式,并依據(jù)多層層合單元的零能模式判據(jù),得到最終具有8個(gè)應(yīng)力模式的應(yīng)力矩陣。
based on the hybrid / mixed element method of piezoelectric laminated, a piezoelectric multilayer element is developed, in the piezoelectric multilayer element, the continuity of transverse stresses of at interfaces between layers is naturally ensured . 3 . by the use of iso-function method, stress modes of 8-node three-dimensional solid element made of on-axis orthotropic material are derived 依據(jù)一般層合板雜交元理論知識(shí),提出一個(gè)壓電層合板多層單元,利用壓電層合板子層間的表面參數(shù),使壓電層合板的層間應(yīng)力的連續(xù)性得到自然滿足,并對(duì)壓電層合板進(jìn)行雜交元列式。
based on the hybrid / mixed element method of piezoelectric laminated, a piezoelectric multilayer element is developed, in the piezoelectric multilayer element, the continuity of transverse stresses of at interfaces between layers is naturally ensured . 3 . by the use of iso-function method, stress modes of 8-node three-dimensional solid element made of on-axis orthotropic material are derived 依據(jù)一般層合板雜交元理論知識(shí),提出一個(gè)壓電層合板多層單元,利用壓電層合板子層間的表面參數(shù),使壓電層合板的層間應(yīng)力的連續(xù)性得到自然滿足,并對(duì)壓電層合板進(jìn)行雜交元列式。