Lifting lug calcs.xls
Description
Check lug shear stress.
Check Bending and tension stress.
Check bearing stress.
Check weld size.
Calculation Reference
Machine Design
Strength of Welds
Design of Lifting Equipment
Calculation Preview
Submitted By:
Submitted On:
21 Mar 2011
File Size:
39.50 Kb
Downloads:
472
File Version:
1.0
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The equation seems appropriate. My concern is the coding in the excell spreadsheet in which leaving out the parenthesis makes a significant difference.
Without the parenthesis in the denominator the numerator is only divided by "W" and not "(W*(t^2/6)).
The author may have multiplied t instead of squared t as well.
In the denominator of the last equation it has "(W*(t2/6)"...
Is that t^2 or t*2?
Also in the excell equation is leaves out a set of parenthesis.
These two possible errors results in dramatic changes in the equation.
barangeravindra emailed saying:
We try to help as best we can but we simply do not have enough time to answer such detailed questions from free subscribers. However our calculations previews in this folder show the equations you are looking for. Please feel free to copy the formulas into your own spreadsheet.