Model of welded locomotive boiler with a row of horizontal stays above firebox. These stays were added as a modification to the boiler prototype design which showed wrapper distortion and stay failure in adjacent areas.
Whilst their addition reduced wrapper stress so that it was not visible, it is still above the design stress of around 120N/mm2.
To see the model without the row of stays please click here. This will open in a new browser window
To see a comparison with a radial crown stay model click here. This will open in a new browser window
Please click on the main image to start animation. clicking on the moving image will stop the animation. Clicking on the smaller boiler image to the right swaps viewpoint.
Animation is of a repeated cycle of pressurisation up to 1.628 N/mm2 and back down to zero again.
Actual maximum distortion is around 4mm.
To zoom in press the "Ctrl" key and the "+" key.
To zoom out press the "Ctrl" key and the "+" key.