I am attempting to run a basic column buckling problem and I encounter an instability no matter what I try. I am intentionally using the basic solver. There are no buckling results shown at all.
STAAD SPACE
START JOB INFORMATION
ENGINEER DATE 16-Oct-17
END JOB INFORMATION
INPUT WIDTH 79
UNIT FEET KIP
JOINT COORDINATES
1 0 0 0; 2 0 10 0; 3 0 2 0; 4 0 4 0; 5 0 6 0; 6 0 8 0;
MEMBER INCIDENCES
1 1 3; 2 3 4; 3 4 5; 4 5 6; 5 6 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 TO 5 TABLE ST W6X12
CONSTANTS
MATERIAL STEEL ALL
SUPPORTS
1 FIXED
LOAD 1 LOADTYPE None TITLE LOAD CASE 1
JOINT LOAD
2 FY -100
5 FX 1
PERFORM BUCKLING ANALYSIS MAXSTEP 20 PRINT ALL
FINISH