Abstract—To increase the lifting capacity and minimize the
cost and time for building a ship and offshore structure, block
lifting with multi-cranes becomes more and more danger. In
this paper, therefore, dynamic response analysis of the
multi-cranes is performed for block lifting operation. By this
simulation, one can confirm the dynamic effects, such as
dynamic motion and load, to prevent fatal accidents during the
multi-crane operation. The crane system consists of several
bodies. These bodies are connected with various types of joints
and wire rope. To carry out the dynamic simulation, therefore,
the crane system is modeled as a multi-body system. There are
several types of crane, such as a goliath crane, jib crane, and
floating crane, etc. Among them, the floating crane is operated
on the sea water. Therefore the hydrostatic force and linearized
hydrodynamic force are considered as the external forces acting
on the floating crane. Using the dynamics simulation program
developed in this paper, a dynamic response simulation of
several cases of block lifting with multi-cranes are carried out,
and the simulation results are validated by comparing them
with the measured data from the shipyard. Moreover, the
simulation results can be applied to the structural analysis for
evaluate the dynamic effects on the block.
Index Terms—Dynamic simulation, modeling and
simulation, multi-body system, large scale manufacturing,
structural analysis.
The authors are with the Education and Research Center for Creative
Offshore Plant Engineers, Engineering Research Institute, and Department
of naval architecture and ocean engineering in Seoul National University,
South Korea (e-mail: knk80@snu.ac.kr).
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Cite:Namkug Ku, Sol Ha, and Myoung-Il Roh, "Crane Modeling and Simulation in Offshore Structure Building Industry," International Journal of Computer Theory and Engineering vol. 6, no. 3, pp. 278-284, 2014.
