Two vertical bars are supported by a rigid bar, which is pinned-supported on one end. Find stresses in vertical bars due to a load at the free end of the rigid bar.
Reference
Higdon, Ohlsen, Stiles, Weese and Riley, Mechanics of Materials, 3rd Edition, John Wiley & Sons, Page 135, Problem 3-37.
Problem
TBars A and B are connected by rigid links to a fixed support at the top and to a rigid bar at the bottom. Determine the axial stresses in bars A and B when the load P is 177.92888 kN applied as shown.
Assume the moment of inertia of member CD to be very large.
Rigid bar hanging from a pair of rods
Comparison
Table 1. Comparison of results
Result Type |
Theory |
STAAD.Pro
|
Difference |
Stress in A (GPa) |
0.17237 |
0.1723889 |
negligible |
Stress in B (GPa) |
0.20684 |
0.2068032 |
negligible |
STAAD Output
MEMBER STRESSES
---------------
ALL UNITS ARE KN /SQ METE
MEMB LD SECT AXIAL BEND-Y BEND-Z COMBINED SHEAR-Y SHEAR-Z
4 1 .0 172388.9 T 0.0 0.0 172388.9 0.0 0.0
1.0 172388.9 T 0.0 0.0 172388.9 0.0 0.0
5 1 .0 206803.2 T 0.0 0.0 206803.2 0.0 0.0
1.0 206803.2 T 0.0 0.0 206803.2 0.0 0.0