开洞核芯筒结构动力特性的数值计算与分析

用等效剪力膜代替核芯筒洞口之间的连梁 ,把开洞的核芯筒结构模拟成为一个闭口的薄壁杆 ,利用有限杆元法提出开洞核芯筒结构动力特性分析的数值方法 ,考虑了扭转、翘曲、特别是筒壁中面上的剪应变对动力特征分析的影响 ,和其它数值方法比较显示着本文方法的有效性和可行性

Numerical analysis and calculation for dynamic characteristics of perforated core wall structures

In this paper, a perforated core wall structure is modeled as an equivalent thin-walled member with closed cross section, while the connecting beams between openings are replacement by an equivalent shear diaphragm of thickness. Then, a numerical method for the dynamic analysis of the core walls structure is proposed y using finite member element method (FMEM) in which the effects of torsion, warping and, especially, the shearing strains in the middle surface of the walls are considered. The results presented in this paper are very promising compares with the ones obtained from another numerical method.