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U DC 621.791 .O56 Ref. No,: IS0 / R 617 - 1967 (E)
IS0
FOR STAND AR D I Z AT I O N
I N T E R N AT I O N A L ORGAN I ZAT I O N
IS O R E CO M M EN DATI O N
R 617
CALCULATION OF RECTANGULAR SYMMETRICAL FILLET WELDS
STATICALLY LOADED IN SUCH A WAY
THAT THE TRANSVERSE SECTION
IS NOT UNDER ANY NORMAL STRESS (o,,=O)
1st EDITION
September 1967
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The copyright of IS0 Recommendations and IS0 Standards
belongs to IS0 Member Bodies. Reproduction of these
documents, in any country, may be authorized &herefore only
by the national standards organization of that country, being
a member of ISO.
For each individual country the only valid standard is the national standard of that country.
Priited in Switzerland
Also issued in French and Russian. Copies to be obtained through the national standards organizations.
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BRIEF HISTORY
The IS0 Recommendation R 61 7, Calculation of’ Rectangular Symmetrical Fillet Welds
Statically Loaded in such a Way that the Transverse Section is not under any Normal Stress
(b,, = O), was drawn up by Technical Committee ISO/TC 44, Welding, the Secretariat of
which is held by the Association Française de Normalisation (AFNOR).
Work on this question by the Technical Committee began in 1957 and led, in 1961,
to the adoption of a Draft IS0 Recommendation.
In October 1965, this Draft IS0 Recommendation (No. 848) was circulated to all
the IS0 Member Bodies for enquiry. It was approved, subject to a few modifications of an
editorial nature, by the following Member Bodies :
Australia Israel Spain
Austria
Italy Switzerland
Belgium
Japan U.A.R.
Brazil
Netherlands United Kingdom
Chile New Zealand U.S.S.R.
Denmark Portugal Yugoslavia
France Republic
Germany
of South Africa
India Romania
Four Member Bodies opposed the approval of the Draft:
Canada
Ireland
Sweden
U.S.A.
The Draft IS0 Recommendation was then submitted by correspondence to the IS0
Council, which decided, in September 1967, to accept it as an IS0 RECOMMENDATION.
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IS0 / R 617 - 1967 (E)
IS0 Recommendation R 617 September 1967
CALCULATION OF RECTANGULAR SYMMETRICAL FILLET WELDS
STATICALLY LOADED IN SUCH A WAY
THAT THE TRANSVERSE SECTION
IS NOT UNDER ANY NORMAL STRESS
(U// = O)
1. The state of stress should be determined by the average stress afecting the throat section,
the normal component of which is al and the shear component T, which may be in any
direction. T is then defined by its components T~ and T,,, which are respectively normal
and parallel to the longitudinal axis of the weld.
2. In the case of mild steel and when the stress is perpendicular to the longitudinal axis of the
weld, the great ellipse of Figure 1 should be accepted as the locus of the ends of the vectors
representing the failing stress for the rupture of the weld (average stress calculated for the
weld throat section).
3.
In the case of mild
...