For most applications, the weld size is determined by the amount of shear it must resist; in other situations, the stress in the weld can be a combination of shear and bending.Daniel Turner said:Hi guys,
Quick question, How do you calculate the min. weld thickness needed for an allowable stress?
You calculate shear flow I assume?
Thanks in advance!
The purpose of calculating minimum weld thickness for allowable stress is to ensure that the welded joint is strong enough to withstand the expected loads and stresses. This calculation helps determine the minimum amount of weld material required to safely join two pieces of metal together.
The minimum weld thickness for allowable stress is calculated by considering factors such as the type of weld joint, the type and thickness of the base metal, the welding process and electrode used, and the expected loads and stresses on the welded joint. Various industry standards and codes provide formulas and tables to assist in this calculation.
Some common factors that can affect the minimum weld thickness for allowable stress include the type and thickness of the base metal, the type of welding process and electrode used, the welding position, and the expected loads and stresses on the welded joint. Other factors such as ambient temperature, joint design, and welding technique can also impact the calculation.
Using the correct minimum weld thickness for allowable stress is important to ensure the strength and integrity of the welded joint. If the weld is too thin, it may fail under the expected loads and stresses, leading to structural failure and potential safety hazards. On the other hand, if the weld is too thick, it can result in unnecessary use of materials and increased production costs.
Yes, there are some limitations to using the calculated minimum weld thickness for allowable stress. These calculations are based on assumptions and may not account for all variables and factors that can affect the strength of the welded joint. It is important for the engineer or welder to also consider their experience and judgment when determining the minimum weld thickness for allowable stress.