Abstract :
Wind turbines are windmills that used to generate electricity. The basic
principle of the work of a wind turbine is to convert wind energy into mechanical
energy in the windmill, then the spinning wheel is used to rotate a generator that
will generate electricity. One of the things that must be considered in windmills is
the strength and durability of the wind turbine hub structure design. Because the
hub (of the wind turbine) is one of the important parts of the wind turbine, the
author analyzes the strength of the wind turbine hub structure to ensure that the
structure is able to handle the load that occurs during its operation.
The process of this analysis is to calculate the value of the centrifugal
force load where the load will be applied to the wind turbine hub structure that
has been modeled and then analyzed using the MSC Patran / Nastran Program.
The analysis process in the software uses finite element method. Finding the
strength value of a wind turbine hub structure can be done after obtaining the
results of the analysis by knowing the value of the Margin of Safety (MS ? 0) and
Failure Indices (FI ? 0) so the structure can be concluded to be safe.
The results of the analysis explain that the hub structure of the wind
turbine is able to hold the centrifugal force load of 6069.56976 N with a Margin
of Safety value of 2.603 on the core and the Failure Indices value on each skin
lamina smaller than 1. From the results of the analysis can be concluded that the
overall structure of the wind turbine hub can still withstand centrifugal force
loads.