Plate Stress to Partial Penetration Fillet Weld Stress



Calculate weld throat stress from plate bending, direct and shear stresses. It is useful for detailed stress analysis of welded connection using stresses extracted from finite element models with plate elements

Schaum's Outine Series Machine Design

Design of welded structures Blodgett

To calculate the weld throat stress from plate bending, direct, and shear stresses, you can follow these steps:

  1. Determine the stress components: Identify the stress components acting on the parent plate. These components typically include bending stress (σb), direct or axial stress (σd), and shear stress (τ).

  2. Determine the throat thickness: Measure or determine the throat thickness (t) of the partial penetration fillet weld. This is the distance from the root of the weld to the theoretical intersection of the weld with the base metal.

  3. Calculate the weld throat stress: The weld throat stress (σw) can be calculated using the following equation:

    σw = √((σb + σd)^2 + 3τ^2) / (2√2 * t)

    Where σb is the bending stress, σd is the direct or axial stress, and τ is the shear stress acting on the parent plate.

  4. Interpret the results: The calculated weld throat stress represents the equivalent stress on the weld throat due to the combination of bending, direct, and shear stresses in the parent plate.

By following these steps, you can calculate the weld throat stress from the plate bending, direct, and shear stresses, considering the throat thickness of the partial penetration fillet weld. It is important to ensure that the calculated stress is within acceptable limits to ensure the integrity and strength of the weld joint.

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03 Jun 2011
Last Modified
19 Jul 2023
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Comments: 4
JohnDoyle[Admin] 9 years ago
I have just manually updated the database to remove the IE double counted downloads. You have downloaded 15 file this leaves you another 5 downloads today.
JohnDoyle[Admin] 9 years ago
Thank you for pointing out the omission in the plan comparison table. However in the plan description the download limit is stated clearly. To prevent confusion to future users I have updated the plan comparison table. I can see that you have just signed up for our XLC Ed (12M) plan earlier today and no doubt you are keen to grab all the calculations as soon as possible. Despite the download limit users can still download up to 7300 files per year - that's a lot of calculations to work through.Most users dip in and out of the repository as they need calculations and I have not had any complaints about the 20 file download limit. The calculation preview is to reveal exactly what the file looks like so there is only really a need to download if you intend using the calculation. We track all your downloads and show you if any of your downloads have been recently updated (see 'My Downloads' link in the member area on the right hand margin). This list could become very long and difficult to manage if you have too many downloads.
JohnDoyle[Admin] 9 years ago
All download pages have a calculation preview so you have a very good idea of what you are going to download. The limit is 20 downloads a day only IE users who do not add ExcelCalcs as a trusted site will be limited to 10 (I don't know why IE works like this, we suggest you use Chrome). The site operates under https.
JohnDoyle[Admin] 13 years ago
I have updated the calculation using the ExcelCalcs Calculation template so that it is easier to change systems of units.