Download Rail Track Analysis User Manual with Worked Example

Revisit of UIC774-3 Test E1-3 Using the Separate and LUSAS Methods of
Analysis
Figure 102: Axial Force In Rails Due To Combined Temperature And Rail Loading
Comparison of these results with the UIC774-3 code of practice test results shows that
the result compares directly with the 190.07 N/mm2 compressive rail stress from the
simplified analysis in the test case (which is based on evaluating the effect of each part
of the loading separately) and are close to the rigorous answer of 182.4 N/mm 2.
LUSAS Nonlinear Analysis
The UIC774-3 E1-3 test case has been reanalysed using the LUSAS rail option and
gives the following peak compressive rail stress for the thermal loading alone and the
combined thermal and rail loading:
Thermal:
150.21 N/mm2
Thermal & Rail: 187.56 N/mm2
Comparison of the results shows that the rail stresses are in excellent agreement for
both parts of the analysis with the compressive rail stress having a percentage error of
2.83% when compared against the target rigorous solution of 182.4 N/mm 2.
123