I am using STAAD for beam torsion analysis but I think STAAD does not draw the correct torsion diagram. My input is below:
Torsion diagram should be the same as a shear diagram (for this case) but what STAAD is coming up with does not make sense.
STAAD PLANE
START JOB INFORMATION
ENGINEER DATE 24-Feb-17
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; 2 6 0 0;
MEMBER INCIDENCES
1 1 2;
DEFINE MATERIAL START
ISOTROPIC STEEL
E 4.176e+006
POISSON 0.3
DENSITY 0.489024
ALPHA 6e-006
DAMP 0.03
TYPE STEEL
STRENGTH FY 5184 FU 8352 RY 1.5 RT 1.2
END DEFINE MATERIAL
MEMBER PROPERTY AMERICAN
1 TABLE ST HSST5X5X0.313
CONSTANTS
MATERIAL STEEL ALL
MEMBER RELEASE
1 START MY MZ
1 END MY MZ
SUPPORTS
1 2 FIXED
LOAD 1 LOADTYPE None TITLE LOAD CASE 1
MEMBER LOAD
1 CON GY -1.5 2
1 CON GY -1.5 3.33
1 CON GX 1.5 2
1 CON GX 1.5 3.33
1 CON GZ 2.5 3.33
1 CON GZ 2.5 2
1 CMOM GX 7.5 2
1 CMOM GX 7.5 3.3
1 CMOM GY 4.5 3.3
1 CMOM GY 4.5 2
PERFORM ANALYSIS PRINT ALL
PARAMETER 1
CODE AISC UNIFIED 2010
METHOD ASD
FU 8352 ALL
FYLD 6624 ALL
TORSION 1 ALL
TRACK 2 ALL
CHECK CODE ALL
FINISH