Analysis of a Welded Connection with Fillet Welds for a Bending Moment Acting in the Weld Plane

l₁=30 cm; l₂=20 cm

Objective: Check the mode for calculating welded connections

Task: Check the welded connection with fillet welds. The connection is loaded with a bending moment acting in the weld plane.

References: Manual to SNiP II-23-81. Welded Connections. 1984. p. 29 – 30.

Compliance with the codes: SNiP II-23-81*, SP 16.13330.2011, SP 16.13330.2017, DBN B.2.6-163:2010, DBN B.2.6-198:2014.

Initial data file:

1. when the weld leg is kf = 10 мм: 1.2-1.sav;	report — Kristall1.2-1.doc
2. when the weld leg is kf = 6 мм: 1.2-2.sav;	report — Kristall1.2-2.doc

Initial data:

М = 55 kNm	Bending moment
Run = 370 MPa	Steel VSt3
Rwf = 200 MPa, βf = 0,7	Welding with coated E46 electrodes
γwf = γc = 1	Service factors

KRISTALL initial data when the weld leg is 10 mm:
Steel: C255

Importance factor	1
Service factor	1
Group of structures according to the table 50* of SNiP II-23-81*	1

 

Properties of welding materials:
Characteristic resistance of the weld metal based on the ultimate strength, Rwun	45871,56 T/m2
Design resistance of the fillet welds for shear in the weld metal, Rwf	20387,36 T/m2
Type of welding	Manual
Position of weld	Flat
Climatic region	with temperature  t > -40°C

 

Type:	Parameters:
	Weld leg = 10 mm b = 300 mm h = 200 mm t = 10 mm tf = 10 mm

 

Internal forces and moments:

N = 0 kN
M_y = 55 kNm
Q_z = 0 kN

 

KRISTALL initial data when the weld leg is 6 mm:
Steel: C255

Importance factor	1
Service factor	1
Group of structures according to the table 50* of SNiP II-23-81*	1

 

Properties of welding materials:
Characteristic resistance of the weld metal based on the ultimate strength, Rwun	45871,56 T/m2
Design resistance of the fillet welds for shear in the weld metal, Rwf	20387,36 T/m2
Type of welding	Manual
Position of weld	Flat
Climatic region	with temperature  t > -40°C

 

Type:	Parameters:
	Weld leg = 6 mm b = 300 mm h = 200 mm t = 10 mm tf = 10 mm

 

Internal forces and moments:

N = 0 kN
M_y = 55 kNm
Q_z = 0 kN

Comparison of solutions:

Weld leg, mm	10	6
Check	of the weld metal	of the weld metal
Source	117/200 = 0,58	199/200 = 0,995
KRISTALL	0,555	0,937
Deviation, %	4,31	5,8