aluminium in commercial vehicles - European Aluminium Association

More documents

Recommendations

Info

76 EUROPEAN ALUMINIUM ASSOCIATION ALUMINIUM IN COMMERCIAL VEHICLES CHAPTER VI 8. Fatigue 8.1. Theory Structures with repeating loads may be susceptible to fatigue when the number of load cycles is high, even when the loads give low stresses in the structure. Fatigue failure starts with development of a crack at a point with stress concentrations. With continuous repeating loads the crack will grow, this will be shown as one striation in the failure surface for each load cycles. The distance between the striations is depending on the stress range and that is giving the growing speed. The stress range is defined as the algebraic difference between the stress peak and the stress valley in a stress cycle. At low stress ranges the crack grows slowly and with high stress range it grows fast. (Figure VI.13) Trailer fatigue testing in laboratory (Benalu)
EUROPEAN ALUMINIUM ASSOCIATION ALUMINIUM IN COMMERCIAL VEHICLES CHAPTER VI 77 σ 0 1. Stress peak 2. Stress valley 3. Stress cycle Rules for fatigue design are given in EN 1999-1-3. The rules are based on quality levels given in EN 1999-1-3 and EN 1090-3. • The fatigue strength depends on: • type of detail (design) • stress range • number of cycles • stress ratio • quality of manufacturing ‰ ‰ 1 ‰ FIGURE VI.13 3 ‰ 2 Δσ Stress range σ 3 Stress amplitude ‰ ‰ T Δσ ‰ σ 3 σ 3 ‰ ‰ ‰ ‰ ‰ σ max σ m σ min The picture is showing the striations in a fatigue failure surface of an aluminium tube.
Page 1 and 2:
ALUMINIUM IN COMMERCIAL VEHICLES
Page 3 and 4:
Aluminium in Commercial Vehicles ha
Page 5 and 6:
VII. FABRICATION . . . . . . . . .
Page 7 and 8:
CHAPTER II ALUMINIUM IN TRANSPORT 1
Page 9 and 10:
EUROPEAN ALUMINIUM ASSOCIATION ALUM
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
CHAPTER III WHY USING ALUMINIUM 1.
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26: EUROPEAN ALUMINIUM ASSOCIATION ALUM
Page 29 and 30: CHAPTER IV FREQUENTLY ASKED QUESTIO
Page 39 and 40: CHAPTER V ALUMINIUM ALLOYS FOR COMM
Page 57 and 58: CHAPTER VI DESIGN AND CALCULATION 1
Page 75: EUROPEAN ALUMINIUM ASSOCIATION ALUM
Page 91 and 92: CHAPTER VII FABRICATION 1. INTRODUC
Page 107 and 108: CHAPTER VIII WELDING 1. FOREWORD .
Page 127 and 128:
Page 129 and 130:
CHAPTER IX OTHER JOINING TECHNIQUES
Page 131 and 132:
Page 133 and 134:
Page 135 and 136:
Page 137 and 138:
CHAPTER X DECORATION AND FINISHING
Page 139 and 140:
Page 141 and 142:
Cell wall EUROPEAN ALUMINIUM ASSOCI
Page 143 and 144:
Page 145 and 146:
CHAPTER XI CORROSION RESISTANCE 1.
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
CHAPTER XII CLEANING OF ALUMINIUM C
Page 155 and 156:
Page 157 and 158:
CHAPTER XIII REPAIR OF ALUMINIUM CO
Page 159 and 160:
Page 161 and 162:
show all

aluminium in commercial vehicles - European Aluminium Association

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?