The safety risk posed by the swing structure of the
propulsion beam of the tunnel boring machinecarried bolt drill because of
complex stress during the construction of tunnels should be resolved. As a
result, to improve the swing structure′s mechanical
properties and stability, statics analysis is conducted to determine the weak
positions with stress concentration and extremely uneven stress distribution.
Furthermore, using the submodel method, the swing structure′s weak points are removed to increase its design space. The
structure is then optimized using the topology optimization method, thereby
obtaining a new topology form of the part. Finally, the stress, deformation,
and vibration frequency of the swing structure before and after optimization
are compared. The results show that the stress concentration of the swing
structure under dangerous working conditions has been reduced, stiffness and
strength of the structure have been improved to a certain extent, and vibration
characteristics and structural stability of the structure have also been improved.
LIU Xiaochun
. Topological Optimization of Swing Structure of Tunnel
Boring Machine Carried Bolt Drill[J]. Tunnel Construction, 2022
, 42(1)
: 137
-144
.
DOI: 10.3973/j.issn.2096-4498.2022.01.017
