mm
464.46
17231.21
mm
464.46
17231.21
mm
2110541.67
986.67
mm
2110541.67
986.67
mm
944.78
167961.60
mm
2666.67
106.67
mm
2666.67
106.67
mm
2666.67
106.67
mm
2666.67
106.67
mm
128.00
4608.00
此计算程式要求铝框受拉边应位于
X轴或Y轴上.
矩形形心
Y
i
I
xi
=bh
3
/12
I
yi
=hb
3
/12
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4
mm
4