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1)  Initial stress stiffness
初应力刚度
2)  initial stress stiffness matrix
初应力刚度矩阵
1.
To take into account the P-Δ effects of planar beam-column members subjected to varying axial forces,a two-node planar beamcolumn element was proposed,and the elemental initial stress stiffness matrix was derived according to Minimum Potential Principle.
为了考虑平面梁柱构件在变化轴向荷载作用下的P-Δ效应,本文采用二节点平面梁柱单元,根据最小势能原理推导了单元的初应力刚度矩阵,并分别阐述了应用该单元求解结构临界荷载因子及迭代计算荷载-位移反应的方法。
2.
To take into account theP-Δeffects of beam-column members in a planar frame structure subjected to varying axial forces,a three-node planar beam-column element is formulated by adopting three-point interpolation Hermite polynomials as its shape functions,and the elemental linear stiffness matrix and initial stress stiffness matrix are derived according to the minimum potential principle.
为了考虑平面框架结构中梁柱构件在变化轴向荷载作用下的P—Δ效应,采用三节点平面梁柱单元,选用三点插值的Hermite多项式作为其形函数,根据最小势能原理推导了单元线性刚度矩阵和初应力刚度矩阵,并分别阐述了应用该单元求解结构屈曲荷载因子及迭代计算荷载—位移反应的方法。
3)  dynamic stiffness/belated initial stress method
动刚度/差时初应力法
4)  degree of initial stress
初应力度
5)  initial stiffness
初始刚度
1.
Analysis of the initial stiffness of connections with top-seat and web angles;
带双腹板顶底角钢连接初始刚度研究
2.
Calculation of initial stiffness and ultimate bearing capacity of top-and-seat angle connections
顶底角钢连接的初始刚度和极限承载力计算
3.
Calculation method of initial stiffness for reinforced panel zones in beam-to-column connections
加强式梁柱连接节点域初始刚度的计算方法研究
更多例句>>
6)  initial stress strength ratio
初始应力强度比
补充资料：ANSYS工字梁焊缝初应力例子

建立好模型
…..
/SOLU
!*
ANTYPE,0
/INPUT,'input','txt',
/INPUT,'output1','txt',
!*
ISFILE,READ,1,txt, ,0
SOLVE
=====================
!定义残余应力矩阵
I=1
fy=310e6
!定义单元中心坐标数组，初应力数组
*DIM,EleCenter,ARRAY,NumNode,3,1, , ,
*DIM,EleIS,ARRAY,NumNode,1,1, , ,
*DO,I, 1, NumNode,1
!得到单元中心坐标
*GET,EleCenter(I,1,1),ELEM,I,CENT,X
*GET,EleCenter(I,2,1),ELEM,I,CENT,Y
*GET,EleCenter(I,3,1),ELEM,I,CENT,Z
!焊缝位置在X=1.0 到1.05 之间
*IF,EleCenter(I,1,1),GT,1,THEN
*IF,EleCenter(I,1,1),LT,1.05,THEN
*IF,EleCenter(I,2,1),GT,0.5,THEN
!上翼缘初始应力
EleIS(I,1,1)=-20*fy*EleCenter(I,3,1)**2+0.3*fy
*endif
*IF,EleCenter(I,2,1),LT,0.0,THEN
!下翼缘初始应力
EleIS(I,1,1)=-20*fy*EleCenter(I,3,1)**2+0.3*fy
*endif
!腹板初始应力
*if,EleCenter(I,2,1),GE,0.0,THEN
*IF,ELECENTER(I,2,1),LE,0.5,THEN
EleIS(I,1,1)=4.076*fy*(EleCenter(I,2,1)-0.5)**2
EleIS(I,1,1)=EleIS(I,1,1)-0.719*fy
*IF,EleIS(I,1,1),LT,-0.3*fy,THEN
ELeIS(I,1,1)=-0.3*fy
*ENDIF


*ENDIF
*ENDIF
*ENDIF
*ENDIF
*ENDDO
===============
!输出应力数值
*CFOPEN,'1','txt',' '
*DO,I,1,3840
!*IF,EleIS(I,1,1),ne,0.,then
*VWRITE,'!'
(A)
*VWRITE,'! Stress for element',
(A,F)
*VWRITE,'!'
(A)
*VWRITE,'eis,',I
(A,F)
P=EleIS(I,1,1)
*VWRITE,P,0.,0.,0.,0.,0.
(E,E,E,E,E,E)
!*ENDIF
*ENDDO
*CFCLOS

说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条