Calculations of a welded joint consisting of a fillet and bevel groove
Calculations of a welded joint consisting of a fillet and bevel groove
(OP)
We manufacture towers posts with round base plates (made from T1) welded to the ends. The posts are 4" in diameter solid shaft at 55ksi and beveled at 45 degrees making a 1"X1" bevel. The posts are then welded filling the bevel followed by a 11/16" fillet. The posts are capable of taking a tensile load of 473kips. I'm tring to determine what weld wire to use such as E80 or E70. I'm having trouble determining what would be the correct shear area of this joint I should use to determine which weld wire to use. Using E70, the 11/16 fillet weld alone gives me a strength of approximately 150 kips. But I'm unsure as to how much additional strength I get from the chamfer. Any help would be greatly appreciated.
Thanks
Thanks





RE: Calculations of a welded joint consisting of a fillet and bevel groove
RE: Calculations of a welded joint consisting of a fillet and bevel groove
RE: Calculations of a welded joint consisting of a fillet and bevel groove
So if the fillet only is worth 172 kips at E70, and the chamfers leg is approximatly .9" which gives 184kips. Would my total load capability be 172+184=356kips? I was thinking the worst shear area is the hypotenuse of the chamfer which is appoximatly 1.375" would then give 280kips using E70 wire.
I've looked through blodgett, but did not see anything that looked like the example I have.
Thanks
Robert
RE: Calculations of a welded joint consisting of a fillet and bevel groove
Regarding your combined load carrying capacity, they are not directly additive. In this case you need to take the square root of the sum the squares of the forces at 90 degree angles - the shear load across the effective throat of the partial penetration weld and the shear load across the external fillet.