diff options
Diffstat (limited to '3886/CH9/EX9.9')
| -rw-r--r-- | 3886/CH9/EX9.9/9_9.sce | 13 | ||||
| -rw-r--r-- | 3886/CH9/EX9.9/9_9.txt | 7 |
2 files changed, 20 insertions, 0 deletions
diff --git a/3886/CH9/EX9.9/9_9.sce b/3886/CH9/EX9.9/9_9.sce new file mode 100644 index 000000000..b50f36305 --- /dev/null +++ b/3886/CH9/EX9.9/9_9.sce @@ -0,0 +1,13 @@ +//Determine moment of inertia
+//refer fig.9.34
+//composite section can be divided into simple ones
+A1=150*10 //mm^2
+A2=140*10 //mm^2
+A=A1+A2 //mm^2
+//due to symmetry centroid lies on y-axis
+ybar=(1500*5+1400*(10+70))/(2900) //mm
+Ixx=((150/12)*10^3)+(1500*36.21^2)+((10/12)*140^3)+(1400*38.79^2) //mm^4
+Iyy=((10*150^3)/(12))+((140*10^3)/(12)) //mm^4
+kxx=sqrt(Ixx/A) //mm
+kyy=sqrt(Iyy/A) //mm
+printf("\nIxx=%.2f mm^4\nIyy=%.2f mm^4\nkxx=%.2f mm\nkyy=%.2f mm",Ixx,Iyy,kxx,kyy)
diff --git a/3886/CH9/EX9.9/9_9.txt b/3886/CH9/EX9.9/9_9.txt new file mode 100644 index 000000000..fbb8c2e0d --- /dev/null +++ b/3886/CH9/EX9.9/9_9.txt @@ -0,0 +1,7 @@ +
+--> exec('E:\My program EM\9. Centroid and moment of inertia\9.9.sce', -1)
+
+Ixx=6372442.56 mm^4
+Iyy=2824166.67 mm^4
+kxx=46.88 mm
+kyy=31.21 mm
\ No newline at end of file |