ZL.m An M8x1 bolt joins to members of 40 mm total thickness. The bolt and members are made of the same material (o, = 300 MPa, E = 120 GPa), Fi=3KN, Pw=4KN. Check join failure.
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- Investigate the helical compression springs with squared and ground ends fabricated from A313 stainless steel to see if they are solid safe. If not, what is the largest free length to which they can be wound using ng = 1.2? Given: d= 0.0508 in, OD = 0.249 in, Nt = 11.2 coils, and Lo= 0.72 in. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the values of the solid height, Ls, the spring rate, k, and the shear stress. The solid height, Ls, is .569 in. The spring rate, k, is Ibf/in. The shear stress is kpsi.1. For a bolted assembly with six bolts, the stiffness of each bolt is k, = 3 Mlbf/in and the stiffness of the members is km = 12 Mlbf/in per bolt. An external load of 80 kips is applied to the entire joint. Assume the load is equally distributed to all the bolts. It has been determined to use 1/2 in-13 UNC grade 8 bolts with rolled threads. Assume a torque co-efficient of K = 0.2. a. Determine the maximum bolt preload that can be applied without exceeding the proof strength of the bolts. b. Determine the minimum bolt preload that can be applied while avoiding joint separation. c. Determine the value of torque in units of Ibf-ft that should be specified for preloading the bolts if it is desired to preload to 75% of the proof load. d. Determine the yielding factor of safety for part c). (based on proof strength)Problem 3: A Hexagonal bolt connects two members. The joint has a gap 1 = 2 in and the applied load is 2000 lb. Both of the clamped parts are steel. A preload of 90% the bolt's proof strength will be applied first. For this design, an SAE grade 1, 5/16"-18 UNC-2A bolt is chosen made from A307 with rolled threads. Washers are included between the head and the joint, and between the nut and the joint. Determine a suitable length for the bolt? Find its safety factor against yielding and against joint separation. Are these values acceptable?
- In the Bolted Connection shown, find the following by ASD.Specifications:M20 Bolts in standard holes. Nominal hole diameter = 22mmEffective Hole diameter = nominal hole diameter + 2 mmA325 steel boltAssume thread in shear planeFv = 372 MPaProperties of Angle Bar< 125 x 125 x 13 mmA = 3065 mm²x = 36.3 mmy = 36.3 mmFy = 248 MPa , Fu = 410 MPa 1. For angle bars used as bolted tension element connected to another element only on one leg, the effective area Ae = UAn. Where: An = Net area, U = Shear lag factor = 1 – x/L, L= center to center longitudinal distance of extremely located fasteners, X= distance from centroid of angle bar to surface of contact of joined elements. What is the shear lag factor of our angular bar? a. 0.454 b. 0.9 c. 0.838 d. 0.869 2. Considering RUPTURE of angle bar, what is the allowable force P that the connection can handle if allowable RUPTURE stress in net area of angle bar is Fu/2 a. 463.83 kN…Required information For a bolted assembly with six bolts, the stiffness of each bolt is kb 2 Mibf/in and the stiffness of the members is km = 13 Mlbf/in per bolt. An external load of 80 kips is applied to the entire joint. Assume the load is equally distributed to all the bolts. It has been determined to use 1/2 in-13 UNC grade 8 bolts with rolled threads. It is desired to find the range of torque that a mechanic could apply to initially preload the bolts without expecting failure once the joint is loaded. Assume a torque coefficient of K = 0.2. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the maximum bolt preload that can be applied without exceeding the proof strength of the bolts once the load is applied. The maximum bolt preload that can be applied is Ibf.Q4/ A bolt M18× 1.5 ISO metric thread is subjected to a fluctuating load of 0 to 10000N. Endurance strength=D200 MPa. Bolt and the past are of the same material and length. Yield stress=480 MPa, stress concentration factor 3.85, component area 362mm2. Calculate i) Factor of safety without preload ii) Minimum initial load to prevent joint opening iii) Factor of safety with 9 kN preload iv) Minimum force in the part for a given loading and a preload of 9 kN.
- For a bolted assembly with six bolts, the stiffness of each bolt is kb = 2.8 Mlbf/in and the stiffness of the members is km= 14 Mlbf/in per bolt. An external load of 80 kips is applied to the entire joint. Assume the load is equally distributed to all the bolts. It has been determined to use 1/2 in-13 UNC grade 8 bolts with rolled threads. Assume the bolts are preloaded to 75 percent of the proof load. Determine the yielding factor of safety. The yielding factor of safety isAn M30 × 3.5 ISO grade 8.8 bolt is used in a joint at a preload levelrecommended for reused connections, and the joint is subject to a repeated tensilefatigue load of P = 65 kN per bolt. The joint constant is C = 0.25.a) Determine the static load factors; b) The factor of safety guarding against a fatigue failure based on the Goodmanfatigue criterionAn M 14 x 2 hex-head bolt with a nut and a 14R washer under each of bolt head and the nut is used to clamp together two 18-mm steel plates. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the bolt stiffness. The bolt stiffness kb is 592.69 MN/m.
- An M30 x 3.5 ISO 8.8 bolt is used in a joint at recommended preload, and the joint is subject to a tensile load of P = 65 kN per bolt. The joint constant is C= 0.28. Find the static load factor of safety against yielding.A 20mm thick plate Fy = 250 Mpa, Fu = 415 Mpa, has 20mm nominal bolt holes. Using ASD and LRFD (NSCP 2015), the following apply. For tensile yiielding on gross section : Pn = Fy Ag, reduction factor = 0.90 (LRFD), factor of safety = 1.67 (ASD). For tensile rupture of safety = 2.00 (ASD). Determine the tension iin yielding capacity and tension rupture capacity of the connection. net area section : Pn = Fu Ae , reduction factor = 0.75 (LRFD) , factor 50 37.5 375 75 50 50 50 50 37.5 375 375 37.5 37.5 37.5The 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.