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30 20 10 Stress N/mm² 0 -10 -20 -30 Time Question 1 A Grade S355 steel member, which forms part of the structural framework supporting a storage tank in a warehouse, is subjected to various loads, as shown in Figure 1. The yield and tensile strength of the steel member are 355 N/mm² and 510 N/mm², respectively. The steel member is subjected to axial tension due to its self-weight and appurtenances of 40.0kN. The 10.0kN storage tank is positioned 1.0 m from the centreline of the steel member, and it experiences a fatigue load range of 5.0kN. The steel member is a fillet welded built-up section that comprises two flange plates (100mm x 20mm) and a web plate (250mm x 10mm) as depicted in Section A-A. The leg size of the weld is 8 mm. Use an appropriate consequence class. Based on the damage tolerant method and the modified Goodman equation. Determine an equivalent completely reversed stress. Ignore the vibration and dynamic amplification. Use Euro-code 1993-1-9. (a) Calculate the maximum and minimum stresses at steel member section A-A. (b) Check the fatigue resistance of the steel member at Section A-A using the fatigue limit. (c) Discuss the possible failure mode of the steel member due to fatigue loading. State your design assumptions, if any. Steel plate (Flange) 100mm x 20mm 10.0 m Fillet weld (manual) (Typical) Steel plate (Web) 250mm x 10mm Steel plate (Flange) 100mm x 20mm Section A-A 5.0 m Fixed end Welded built-up steel section 2.5m 3.0 m Fatigue load range 5 kN Total weight of storage tank 10.0 kN 1.0 m Figure 1 Total weight of steel section and its appurtenances 40.0 KN

30 20 10 Stress N/mm² 0 -10 -20 -30 Time Question 1 A Grade S355 steel member, which forms part of the structural framework supporting a storage tank in a warehouse, is subjected to various loads, as shown in Figure 1. The yield and tensile strength of the steel member are 355 N/mm² and 510 N/mm², respectively. The steel member is subjected to axial tension due to its self-weight and appurtenances of 40.0kN. The 10.0kN storage tank is positioned 1.0 m from the centreline of the steel member, and it experiences a fatigue load range of 5.0kN. The steel member is a fillet welded built-up section that comprises two flange plates (100mm x 20mm) and a web plate (250mm x 10mm) as depicted in Section A-A. The leg size of the weld is 8 mm. Use an appropriate consequence class. Based on the damage tolerant method and the modified Goodman equation. Determine an equivalent completely reversed stress. Ignore the vibration and dynamic amplification. Use Euro-code 1993-1-9. (a) Calculate the maximum and minimum stresses at steel member section A-A. (b) Check the fatigue resistance of the steel member at Section A-A using the fatigue limit. (c) Discuss the possible failure mode of the steel member due to fatigue loading. State your design assumptions, if any. Steel plate (Flange) 100mm x 20mm 10.0 m Fillet weld (manual) (Typical) Steel plate (Web) 250mm x 10mm Steel plate (Flange) 100mm x 20mm Section A-A 5.0 m Fixed end Welded built-up steel section 2.5m 3.0 m Fatigue load range 5 kN Total weight of storage tank 10.0 kN 1.0 m Figure 1 Total weight of steel section and its appurtenances 40.0 KN

Materials Science And Engineering Properties
Materials Science And Engineering Properties
1st Edition
ISBN:9781111988609
Author:Charles Gilmore
Publisher:Charles Gilmore
Chapter14: Material Selection
Section: Chapter Questions
Problem 3ETSQ
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30 20 10 Stress N/mm² 0 -10 -20 -30 Time Question 1 A Grade S355 steel member, which forms part of the structural framework supporting a storage tank in a warehouse, is subjected to various loads, as shown in Figure 1. The yield and tensile strength of the steel member are 355 N/mm² and 510 N/mm², respectively. The steel member is subjected to axial tension due to its self-weight and appurtenances of 40.0kN. The 10.0kN storage tank is positioned 1.0 m from the centreline of the steel member, and it experiences a fatigue load range of 5.0kN. The steel member is a fillet welded built-up section that comprises two flange plates (100mm x 20mm) and a web plate (250mm x 10mm) as depicted in Section A-A. The leg size of the weld is 8 mm. Use an appropriate consequence class. Based on the damage tolerant method and the modified Goodman equation. Determine an equivalent completely reversed stress. Ignore the vibration and dynamic amplification. Use Euro-code 1993-1-9. (a) Calculate the maximum and minimum stresses at steel member section A-A. (b) Check the fatigue resistance of the steel member at Section A-A using the fatigue limit. (c) Discuss the possible failure mode of the steel member due to fatigue loading. State your design assumptions, if any. Steel plate (Flange) 100mm x 20mm 10.0 m Fillet weld (manual) (Typical) Steel plate (Web) 250mm x 10mm Steel plate (Flange) 100mm x 20mm Section A-A 5.0 m Fixed end Welded built-up steel section 2.5m 3.0 m Fatigue load range 5 kN Total weight of storage tank 10.0 kN 1.0 m Figure 1 Total weight of steel section and its appurtenances 40.0 KN
Transcribed Image Text:30 20 10 Stress N/mm² 0 -10 -20 -30 Time Question 1 A Grade S355 steel member, which forms part of the structural framework supporting a storage tank in a warehouse, is subjected to various loads, as shown in Figure 1. The yield and tensile strength of the steel member are 355 N/mm² and 510 N/mm², respectively. The steel member is subjected to axial tension due to its self-weight and appurtenances of 40.0kN. The 10.0kN storage tank is positioned 1.0 m from the centreline of the steel member, and it experiences a fatigue load range of 5.0kN. The steel member is a fillet welded built-up section that comprises two flange plates (100mm x 20mm) and a web plate (250mm x 10mm) as depicted in Section A-A. The leg size of the weld is 8 mm. Use an appropriate consequence class. Based on the damage tolerant method and the modified Goodman equation. Determine an equivalent completely reversed stress. Ignore the vibration and dynamic amplification. Use Euro-code 1993-1-9. (a) Calculate the maximum and minimum stresses at steel member section A-A. (b) Check the fatigue resistance of the steel member at Section A-A using the fatigue limit. (c) Discuss the possible failure mode of the steel member due to fatigue loading. State your design assumptions, if any. Steel plate (Flange) 100mm x 20mm 10.0 m Fillet weld (manual) (Typical) Steel plate (Web) 250mm x 10mm Steel plate (Flange) 100mm x 20mm Section A-A 5.0 m Fixed end Welded built-up steel section 2.5m 3.0 m Fatigue load range 5 kN Total weight of storage tank 10.0 kN 1.0 m Figure 1 Total weight of steel section and its appurtenances 40.0 KN
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