Fatigue and Fracture in Aluminium Structures. Proposal for a National Application Document (Updated from the TAS project). Contains tables and figures.
TALAT Lecture 2406 – Annex 2
An Updating of TALAT Chapter 2400
Fatigue and Fracture in Aluminium Structures
Proposal for a National Application Document
(Updated from the TAS project)
TAS alu
Leonardo da Vinci program
Training in Aluminium Alloy Structural Design
6 pages
Prepared by Prof. Dimitris Kosteas
Technische Universität München, Germany
Contents
♦ Fig. 5.2.1* Design Curves Ds - N for plain material detail categories in Table 5.1.1* ......2
♦ Table 5.2.1* Numerical values of Ds (N/mm²) for plain material ......................................2
♦ Fig. 5.2.2* Design Curves Ds - N for members with welded attachments / transverse weld
toe detail categories in Table 5.1.2* ................................................................................... 3
♦ Table 5.2.2* Numerical values of Ds (N/mm²) for members with welded attachments /
transverse weld toe ............................................................................................................. 3
♦ Fig. 5.2.3* Design Curves Ds-N for members with welded attachments / longitudinal
welds................................................................................................................................... 4
♦ Table 5.2.3* Numerical values of Ds (N/mm²) for members with welded attachments /
longitudinal welds............................................................................................................... 4
♦ Fig. 5.2.4* Design Curves Ds-N for welded joints between members ..............................5
♦ Table 5.2.4* Numerical values of Ds (N/mm²) for welded joints between members.......5
♦ Fig. 5.2.5* Design Curves Ds-N for crossing welds and built-up beams ......................6
♦ Table 5.2.5* Numerical values of Ds-N for crossing welds and built-up beams ............6
Date of Issue: 1999
EAA - European Aluminium Association
TALAT 2406 – Annex 2 1
EC 9 - Design Curves Plain Material
Details Table 5.1.1
Stress Range [N/mm²] NC ND N L
300
130-7
95-7
100 85-7
70-7
50
10
5
1E+04 1E+05 1E+06 1E+07 1E+08 1E+09
No. of Cycles N
compare to Table 5.1.1 of
daten/praes/ec9revision eaa-ko-10-98 ENV 1999-2 May 1998
Fig. 5.2.1* Design Curves Ds - N for plain material detail categories in Table 5.1.1*
Table 5.2.1* Numerical values of Ds (N/mm²) for plain material
Detail Category slope Cycles N
2E+06 m1 m2 1E+04 1E+05 1E+06 5E+06 1E+07 1E+08 1E+09
130,0 7,0 7,0 277,1 199,4 143,5 114,0 103,3 74,3 74,3
95,0 7,0 7,0 202,5 145,7 104,9 83,3 75,5 54,3 54,3
85,0 7,0 7,0 181,2 130,4 93,8 74,6 67,5 48,6 48,6
70,0 7,0 7,0 149,2 107,4 77,3 61,4 55,6 40,0 40,0
TALAT 2406 – Annex 2 2
Welded Attachment
EC 9 - Design Curves
Transverse Weld Toe
Stress Range [N/mm²] NC ND N L Details Table 5.1.2
300
100
50 35-3,4
31-3,4
25-3,4
23-3.4
22-3,4
20-3,4
10 18-3,4
5
1E+04 1E+05 1E+06 1E+07 1E+08 1E+09
No. of Cycles N
compare to Table 5.1.2(a) of
daten/praes/ec9design eaa-ko-10-98 ENV 1999-2 May 1998
Fig. 5.2.2* Design Curves Ds - N for members with welded attachments / transverse
weld toe detail categories in Table 5.1.2*
Table 5.2.2* Numerical values of Ds (N/mm²) for members with welded attachments
/ transverse weld toe
Detail Category slope Cycles N
2E+06 m1 m2 1E+04 1E+05 1E+06 5E+06 1E+07 1E+08 1E+09
35,0 3,4 5,4 166,3 84,5 42,9 26,7 23,5 15,3 15,3
31,0 3,4 5,4 147,3 74,8 38,0 23,7 20,8 13,6 13,6
25,0 3,4 5,4 118,8 60,3 30,7 19,1 16,8 11,0 11,0
23,0 3,4 5,4 109,3 55,5 28,2 17,6 15,5 10,1 10,1
22,0 3,4 5,4 104,5 53,1 27,0 16,8 14,8 9,6 9,6
20,0 3,4 5,4 95,0 48,3 24,5 15,3 13,4 8,8 8,8
18,0 3,4 5,4 85,5 43,4 22,1 13,7 12,1 7,9 7,9
TALAT 2406 – Annex 2 3