Subject
Welding is the joining of any two materials by melting the interfaces either under pressure or with a filler material. There are so many variables and special applications that it can be bewildering to select the best or even the only suitable option for your project requirements.
However, there are two interchangeable options for general purpose applications with benefits that can be equally exploited; fillet weld vs butt weld.
One of these is cheaper, easier and quicker to perform and the other is neater, has greater structural integrity and uses less weld metal. In both cases, a filler material is required.
The fillet weld requires no preparation, and needs less arduous welder and weld qualification procedures. Its problem is that all the stress in a fillet weld is in shear, so a greater volume of filler material is required to achieve the same strength as an equivalent butt weld (which indicates the number of weld runs and hence welding time).
The weld strength calculator has been designed to compare the strength and volume of filler material required for both options and thereby help you chose the best option for your purposes.
Welding may be applied to a section of any shape or size that is welded to a solid body, i.e. the end of a beam, column, spar, brace, etc. the other end of which is calculated separately. You enter the dimensions (or properties) of the section and its weld and apply the forces and moments at the joint.
The section properties may be calculated using CalQlata’s Area Moments or Area Moments+ calculators or read directly from the CalQlata’s Steel Sections database.
The moments and forces at each end of a beam can be calculated using CalQlata's Beams, Beam+ or Bending Moments calculators.
The weld strength calculator provides input options for four of the most common beam sections or the sectional properties of a universal beam and that of its weld pattern and calculates the combined stress of the fillet weld, the equivalent stress of the butt welded joint and the volume of filler material required to complete both options..
For help using this calculator see Technical Help
Welding Calculator - Options
Plate/Bar, RHS, THS & I/H Beam
These calculation options provide for the dimensional input of four common sections along with the associated fillet weld(s) and calculate the combined stress in the fillet weld and the volume of filler material, along with the equivalent stress and filler material volume in the butt-welded alternative.
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You enter: |
and the weld strength calculator will provide: |
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Outer weld throat thickness
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Inner weld throat thickness
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Fillet combined stress {butt equivalent stress}
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Fillet volume of weld metal {butt volume of weld metal}
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Irregular Shape
This calculation option provides for the input of the sectional properties of irregular shaped beams, spars, columns, braces, etc. and that of its fillet weld and calculates the combined stress in the fillet weld and the volume of filler material and the equivalent stress in the butt-welded alternative.
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You enter: |
and the weld strength calculator will provide: |
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|
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Outer weld throat thickness
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Inner weld throat thickness
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Fillet combined stress {butt equivalent stress}
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Fillet volume of weld metal {butt volume of weld metal}
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