The work of developing a new jacking Vasa is in full swing. A full scale model of a part of the hull is now being tested at KTH.
A full scale model of a portion of the hull is used for load testing at KTH. The model, which is four meters by four meters and a half feet thick, is a key part of efforts to develop a new jacking the Vasa.
Ivon Hassel from Uppsala University leads the test work to develop a new jacking to Vaasa.
Vasa should be left to posterity a thousand years to. It is the goal of everyone who works with the ship. But the cradle of steel as national treasure rests in not providing the necessary support. This leads to the Vasa changes its shape.
– In the long run you risk rupture. Creep estimates of the wood must be curbed now. Therefore, we must find out how the wood and all joints behave, says Anders Ahlgren, an engineer at the Vasa Museum.
In a research project has a 3D model of the ship created where simulations using the finite element method can be run.
In order to verify that it reflects reality built carpenters on museum in the spring by a 10 ton heavy full-scale model of a portion of the hull on the lower gun deck. Two weeks ago the model was transported to the lab at the School of Electrical Engineering at KTH.
Here now the wood twisted, bent and pried the big load – all to mimic the forces of the ship’s own weight puts national treasure for.
When new technology comes to visit, the tests with horizontally acting loads just started. Ivon Hassel, researchers at Uppsala University, the test manager. Slowly she increased the load from 0 to 15 kN. The LCD will show graphs showing how the wood is moving in different parts of the model.
– I do not want to add on additional load. We want the model to be used for many different tests to come, she says.
In two years, the project will be completed and the mechanical properties of the Vasa’s wood and timber structure to be mapped. The aim is that before then get going with the work to design and construct the new rudder.
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