ANSYS后处理如何让查看两个面的夹角

zk070315

如题，非常感谢

si13

NORMNX(N1,N2,N3) X-direction cosine of the normal to the plane containing nodes N1, N2, and N3.
NORMNY(N1,N2,N3) Y-direction cosine of the normal to the plane containing nodes N1, N2, and N3.
NORMNZ(N1,N2,N3) Z-direction cosine of the normal to the plane containing nodes N1, N2, and N3.
NORMKX(K1,K2,K3) X-direction cosine of the normal to the plane containing keypoints K1, K2, and K3.
NORMKY(K1,K2,K3) Y-direction cosine of the normal to the plane containing keypoints K1, K2, and K3.
NORMKZ(K1,K2,K3) Z-direction cosine of the normal to the plane containing keypoints K1, K2, and K3.

可使用上述函数计算两面法线夹角

civilman狼人

si13 所言极是，我这里举个实例，然后计算出两平面间的夹角。
ansys建立的模型及对应的命令流如下：

finish
/clear
/PREP7
BLOCK,,1,,1,,1,
wprot,0,0,-45
VSBW,1   
vdele,2,,,1

!欲计算面2和面9的夹角。
*afun,deg
ax=NORMKX(1,2,6)  !关键点1,2,6属于平面9
ay=NORMKY(1,2,6)
az=NORMKZ(1,2,6)

bx=NORMKX(1,2,5)   !关键点1,2,5属于平面2
by=NORMKY(1,2,5)
bz=NORMKZ(1,2,5)
theta=acos((ax*bx+ay*by+az*bz)/(sqrt(ax*ax+ay*ay+az*az)*sqrt(bx*bx+by*by+bz*bz)))  !面2与9夹角即为theta=45度，该公式可从高数课本或高中数学查到。