8-69 The bolted connection shown in the figure is subjected to a tensile shear load of 90 kN. The bolts are ISO class 5.8 and the material is cold- drawn AISI 1015 steel. Find the factor of safety of the connection for all possible modes of failure. 35 M30×25
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- The figure shows a connection that employs three SAE grade 4 bolts. The tensile shear load on the joint is 4000 lbf. The members are bars of AISI 1020 HR steel. Assume the bolt threads do not extend into the joint. Find the factor of safety for each possible mode of failure. (Refer example problem 8.6 on pg. 445). in ∞ in 100 in 1 in in Đ 1in -2 in in-20 UNC 5 5 in inRequired information The bolted connection shown in the figure is subjected to a tensile shear load of 90 kN. The bolts are ISO class 5.8, and the material is cold-drawn AISI 1015 steel. Assume the bolt threads do not extend into the joint. Find the factor of safety of the connection for all possible modes of failure. Give the overall joint factor of safety. Given: t = 15 mm and t2 = 25 mm. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. 35 60 60 - 35 t1 M20 x 2.5 35 35 + t2 Find the overall joint factor of safety. The overall joint factor of safety noverall is(8) The bolted connection shown in the figure uses SAE grade 5 bolts. The members are hot-rolled AISI 1018 steel. A tensile shear load F = 4000 lbf is applied to the connection. Find the factor of safety for all possible modes of failure. (Ans/2.93, 4.32, 1.5, 3.25) in in-16 UNC ț in in
- Required information The cold-drawn AISI 1040 steel bar shown in the figure is subjected to an axial load that fluctuates from 8 kN to 30 kN. Use the Modified Goodman criterion and estimate the fatigue factor of safety based on achieving infinite life and the yielding factor of safety. 25 mm 10mm -6-mm D. What is the number of cycles to failure for this part? The number of cycles is 120000A NON- permanent bolted joints carrying tension load and has a stiffness constant of C= 0.2 the joint is using an MI4 X ISO 9.8 bolt . the bolt is subject to a repeated load of Pmax= 30KN. Find the factor of safety based on goodman theory, and also check the possibility of yielding .8-68 Engineering Design + 40 1 plem 8-68 70 millimeters. 40 A bolted lap joint using ISO class 5.8 bolts and members made of cold-drawn SAE 1040 steel is shown in the figure. Assume the bolt threads do not extend into the joint. Find the tensile shear load F that can be applied to this connection to provide a minimum factor of safety of 2.5 for the fol- lowing failure modes: shear of bolts, bearing on bolts, bearing on members, and tension of members. 20 M20x2.5 20
- Example 8-4 in SI Units. • Q-2 Figure gives the cross section of a grade 25 cast-iron pressure vessel. A total of N bolts are to be used to resist a M16 x 2 x 60 mm class 5.8 separating force of 36 kip (160.2 kN). • (a) Determine k,, Kmy and C. • (b) Find the number of bolts required for a load factor of 2 where the bolts may be reused when the joint is taken apart. hexagonal head bolt No: 25 CI 20 mm 20 mm • (c) With the number of bolts obtained in part (b), determine the realized load factor for overload, the yielding factor of safety, and the load factor for joint separation. H = 14.8 mmData: r=0.25 inch, d=0.4 pig and h=0.5 inch, wi=2.5 inch and w= 1.5 inch.The forces fluctuate between a tension of 14 Kips and a compression of 5 Kips. It is made of AISI 1018 CD. steel.The connecting element in the figure is failing. What is the most critical point and give recommendations to improve the situation.(15) A 3/8 - x 2-in AISI 1018 cold-drawn steel bar is cantilevered to support a static load of 300 lbf as illustrated. The bar is secured to the support using two 1/2 in-13 UNC SAE 5 bolts. Find the factor of safety for the following modes of failure: shear of bolt, bearing on bolt, bearing on member, and strength of member. (Ans/ 5.79, 9.58, 5.63, 295) in 3 in l in 14 in 300 Ibf
- (11) The figure shows a connection that employs three SAE grade 5 bolts. The tensile shear load on the joint is 5400 lbf. The members are cold-drawn bars of AISI 1020 steel. Find the factor of safety for each possible mode of failure. (Ans./ 3.26, 5.99, 3.71, 5.36) in- 글im 16 UNC in I in -24 in-Two plates are clamped by a 3/4-10 UNC SAE Grade 5 bolt and regular nut with a 3/4-W plain washer as shown in figure. Top plate is made of grey cast iron and bottom plate is steel. An axial force of 12kN is acted upon the joint. Round off the length of the bolt to nearest 1/4in. Assume bolts are preloaded to 75% of proof load. 1. Determine the bolt stiffness kb. 2. Determine the member stiffness km. 3. Determine the yielding factor of safety of the bolt. 4. Determine the load factor for the bolt. 5. Determine the load factor guarding against joint separation. 1.25 in 1.00 inThe static load P= 5000 lbf is applied at I= 10 inch. The value for r=5 inch. The material for bolt is SAE grade 8. Find the size of the bolts. Assume the factor of safety for shear is 2.