Page 534 - Shigley's Mechanical Engineering Design

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508 Mechanical Engineering Design

Problem Reference
Number Problem Electrode

9–5 9–1 E7010
9–6 9–2 E6010
9–7 9–3 E7010
9–8 9–4 E6010

9–9 to The materials for the members being joined in Probs. 9–1 to 9–4 are specified below. What load
9–12 on the weldment is allowable because member metal is incorporated in the welds?

Problem Reference Vertical
Number Problem Bar Support

9–9 9–1 1018 CD 1018 HR
9–10 9–2 1020 CD 1020 CD
9–11 9–3 1035 HR 1035 CD
9–12 9–4 1035 HR 1020 CD

9–13 to A steel bar of thickness h is welded to a vertical support as shown in the figure. What is the shear
9–16 stress in the throat of the welds due to the force F?

Problem
Number b d h F

9–13 50 mm 50 mm 5 mm 100 kN
9–14 2 in 2 in 5 in 40 kip
16
9–15 50 mm 30 mm 5 mm 100 kN
9–16 4 in 2 in 5 in 40 kip
16

h
Problems 9–13 to 9–16 d
F
b

9–17 to A steel bar of thickness h, to be used as a beam, is welded to a vertical support by two fillet welds
9–20 as shown in the figure.
(a) Find the safe bending force F if the allowable shear stress in the welds is τ allow .
(b) In part a, you found a simple expression for F in terms of the allowable shear stress. Find the
allowable load if the electrode is E7010, the bar is hot-rolled 1020, and the support is hot-
rolled 1015.

Problem
Number b c d h allow
9–17 50 mm 150 mm 50 mm 5 mm 140 MPa
9–18 2 in 6 in 2 in 5 in 25 kpsi
16
9–19 50 mm 150 mm 30 mm 5 mm 140 MPa
9–20 4 in 6 in 2 in 5 in 25 kpsi
16