This method is for less experienced users.ġ. The recommended minimum value of the safety factor for the method of comparative stresses is within the n S = interval. You can work with only one value of the safety factor, regardless of the type, design, and loading of the selected weld joint. While using empirical conversion factors, effects of different stress types to weld joint safety are included in the calculated comparative stress. Strength check can be described by the s S ≤ s Al formula, in which allowable loading of the weld joint is s Al = S Y / n s. This method is for experienced users who can estimate correctly (according to type, design, and weld loading) the required minimum size of safety factor of the weld joint.Īllowable stress is compared with auxiliary comparative stress, which is determined from the calculated partial stresses by using conversion factors of the weld joint when the strength check is carried out with this method. For example, the type, design, and loading of the weld joint. The size of allowable stress, and after the required minimum joint safety, depends on the type of acting stress. Where the formulas for allowable loading of the weld joint are (with respect to the required safety): With a view to the type of the weld joint, design and loading (that is, with respect to acting stress), strength check can be defined with the following formulas. Checks joint strength by direct comparison of calculated normal, shear, or resulting reduced stress with the allowable stress by using a standard calculation procedure.
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