Statics and Mechanics of Materials
2nd Edition
ISBN: 9780073398167
Author: Ferdinand P. Beer, E. Russell Johnston Jr., John T. DeWolf, David Mazurek
Publisher: McGraw-Hill Education
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For a rod made of aluminum alloy 2014-T6, select the smallest square cross section that can be used if the rod is to carry a 55-kip centric load.
Select a standard threaded round rod to support a factored tensile load of 35 kips (service tensile load = 25 kips) using A36 steel. (answer 1 1/4-in rod LRFD and ASD)
Condition #1:
A structural support for a machine is subjected to a static compression load of 20 kN. The support is
manufactured from a circular rod made from SAE 1040 Hot Rolled steel. Specify suitable diameter for
the cross section of the rod based on the basic size. Steel data are available in Table A-10 from the
textbook.
Condition #2:
The same structural support of the basic size determined in Condition 1 is subjected to a tensile load of
15 kN that is repeated several thousand times over the life of the machine. This load is not an addition to
the 20 kN. Specify a suitable steel that is suitable to this application based on the basic size determined in
Condition #1. Loading of Condition #1 does not apply here.
Condition #3:
The same structural support from Condition 2 is heated from room temperature of 25°C. The support is
placed inside a frame on both ends. There is a total clearance of 0.2 mm between the support and its
frame. Initial length of the rod is 200 mm. Specify the…
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- A structural support for a machine is subjected to a static compression load of 20 kN. The support is manufactured from a circular rod made from SAE 1040 Hot Rolled steel. Specify suitable diameter for the cross section of the rod based on the basic size. Steel data are available in Table A-10 from the textbook.arrow_forwardCondition #1: Å structural support for a machine is subjected to a static compression load of 20 kN. The support is manufactured from a circular rod made from SAE 1040 Hot Rolled steel. Specify suitable diameter for the cross section of the rod based on the basic size. Steel data are available in Table A-10 from the textbook.arrow_forward(a) Explain FIVE (5) factors that may influence the optimum column design under an axial compressive load. (b) A 3.6 m long pin-ended column is formed from an A-36 steel circular hollow section with an outer diameter of 75 mm. Determine the minimum thickness, t (to the nearest integer in mm) of the circular hollow section so that the column can safely support the load of 200 kN without buckling. If the outer diameter of the steel circular hollow section is reduced to 62 mm and the ends are pinned-fixed supported, analyse whether the column with the same applied load and the sectional thickness computed above will cause a buckling failure.arrow_forward
- A structural support for a machine will be subjected to a static tensile load of 16.0 kN. It is planned to fabricate the support from a square rod made from SAE 1020 hot-rolled steel. Specify suitable dimensions for the cross section of the rod.arrow_forwardWhich of the following is the design stress for a piston rod where the axial load is completely reversed if the surface of the rod is ground and the surface finish factor is 0.9? Assume no stress concentration. Use a factor of safety of 2 and an endurance limit of 250 MPa. The load factor for completely reversed axial load is 0.85.arrow_forwardcross sectional dimensions at a-a Figure 1 shows the steel bar has its original dimension. if it is subjected to an axial load of 50kNarrow_forward
- A hollow, short compression member, of normalized cast steel (ASTM A27-58, 65 ksi), is to support a load of 1500 kips with a factor of safety of 8 based on the ultimate strength. Determine the outside and inside diameters if Do = 2Diarrow_forwardCondition #1: A structural support for a machine is subjected to a static compression load of 20 kN. The support is manufactured from a circular rod made from SAE 1040 Hot Rolled steel. Specify suitable diameter for the cross section of the rod based on the basic size. For condition 1: It was given to you to use SAE1040 hot rolled steel. In the high-stakes project, you select a different steel for the analysis for condition 1 and determine the basic size A-10 Typical properties of carbon and alloy steels. Ultimate strength,s, Yield strength, s Percent elongation Material SAE no. Condition ksi MPa MPa Annealed Hot rolled Cold drawn 1020 57 65 75 393 448 517 43 48 296 331 441 36 36 20 1020 1020 64 Annealed Hot rolled Cold drawn WQT 700 WQT 900 WOT 1100 WQT 1300 1040 75 90 517 51 30 25 1040 621 669 876 814 738 414 565 641 621 552 60 1040 97 16 19 22 24 1040 1040 1040 127 118 107 93 90 80 1040 87 600 63 434 32 1080 Annealed OQT 700 OQT 900 OQT I100 OQT 1300 614 1303 1234 1000 89 54 372…arrow_forwardA circular AISI 1020 rod is to support a load of 4 MN. Determine its minimum diameter in mm by applying a Factor of Safety of 3.6arrow_forward
- A structural support for a machine will be subjected to a static tensile load of 16.0 kN.Specify suitable dimensions for the cross section of the rod.arrow_forwardDetermine the material index for a lightweight, stiff axially loaded bar.arrow_forwardRequired information A solid square rod is cantilevered at one end. The rod is 0.6 m long and supports a completely reversing transverse load at the other end of ±1.7 kN. The material is AISI 1080 hot-rolled steel. If the rod must support this load for 5 x 104 cycles with a design factor of 1.5, what dimension should the square cross section have? Neglect any stress concentrations at the support end. Determine the size of the cross section. The size of the cross section is 24 mm.arrow_forward
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Column buckling; Author: Amber Book;https://www.youtube.com/watch?v=AvvaCi_Nn94;License: Standard Youtube License