J. van Kasteren
Development of a large pipecutter. Preliminary inventigation.
Report 88.3.OS.2475, Transport Technology, Offshore Technology.
During the assignment "cutting" of steel tubes, which usually consists of
combined deformation and shearing, has been investigated. The tests have been
executed by parallel "shearing" with straight knives, in order to separate the
process of deformation and shearing for investigation and modelling.
Dimensionless presentation of each process is possible as follows (based on the
Adaptation and improvement of the computerprogram KNIPSIM1, based on the
testresults, has led to the simulationprogram KNIPSIM2, which gives an
estimation of the required amount of cutting energy.
- dividing the deformation force by the plastic moment MF of the
- dividing the cutting force by FK=σv*A.
It is recommended to execute further research using different shapes of knives
to minmise the maximum required force based on the assumption of equal amount of
required cutting energy (calculated by the computermodel KNIPSIM2) independent
of the shape of the knives.
Rapporten studenten Transporttechniek
, TU Delft
Reports on Transport Engineering (in Dutch)
, TU Delft