DeGarmo's Materials and Processes in Manufacturing
12th Edition
ISBN: 9781118987674
Author: J. T. Black, Ronald A. Kohser
Publisher: WILEY
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Chapter 14, Problem 48RQ
To determine
Binder material and cure in shell-molding process.
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CORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED.
16: Determine (a) the maximum bending stress, (b)the maximum shearing stress, (c) compressive bending stress atthe roller support, and (d) the shearing stress 1 in below the topsurface of the beam at the location 1 ft to the right of the rollersupport in the simply supported beam shown in Fig. 8-70.ANS: (a) 21,945.313 lb/in2; (b) 1656.25 lb/in2; (c) 10,000 lb/in2; (d) 190.972 lb/in2
CORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED.
20: A 2022 Porsche 911 (992) GT3 is crossing a 20 ft bridge. The specification of the car is shown below.Determine the maximum shear (in lb) and moment (in lb-ft) on the bridge.
ANS: Vmax = 2,680.850 lb ; Mmax = 11,233.13 lb-ft
CORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED.
Answers:
P1 = 208.625 KN/M
P2 = 281.310 KN/M
P = 15.491 KN/M
FB = 463.402 MPA
FV = 55.034 MPA
Chapter 14 Solutions
DeGarmo's Materials and Processes in Manufacturing
Ch. 14 - What are some of the factors that influence the...Ch. 14 - What are the three basic categories of casting...Ch. 14 - What metals are frequently cast into products?Ch. 14 - What features combine to make cast iron and...Ch. 14 - Which type of casting is the most common and most...Ch. 14 - Prob. 6RQCh. 14 - Prob. 7RQCh. 14 - What is the simplest and least expensive type of...Ch. 14 - What is a match plate, and how does it aid...Ch. 14 - How is a cope-and-drag pattern different from a...
Ch. 14 - Prob. 11RQCh. 14 - Prob. 12RQCh. 14 - For what types of products might a loose-piece...Ch. 14 - What are the four primary requirements of molding...Ch. 14 - Prob. 15RQCh. 14 - Prob. 16RQCh. 14 - What is a muller, and what function does it...Ch. 14 - Prob. 18RQCh. 14 - What is a standard rammed specimen for evaluating...Ch. 14 - What is permeability, and why is it important in...Ch. 14 - How does the ratio of water to clay affect the...Ch. 14 - How is the hardness of molding sand determined?Ch. 14 - Prob. 23RQCh. 14 - How does the size and shape of the sand grains...Ch. 14 - Prob. 25RQCh. 14 - Prob. 26RQCh. 14 - Prob. 27RQCh. 14 - Prob. 28RQCh. 14 - Prob. 29RQCh. 14 - Prob. 30RQCh. 14 - What are hot tears, and what can cause them to...Ch. 14 - When might hand ramming be the preferred method of...Ch. 14 - Prob. 33RQCh. 14 - Prob. 34RQCh. 14 - Prob. 35RQCh. 14 - Prob. 36RQCh. 14 - What is stack molding?Ch. 14 - Prob. 38RQCh. 14 - What are the components of green sand?Ch. 14 - Prob. 40RQCh. 14 - Prob. 41RQCh. 14 - Prob. 42RQCh. 14 - What are some of the advantages and limitations of...Ch. 14 - Prob. 44RQCh. 14 - Prob. 45RQCh. 14 - Prob. 46RQCh. 14 - Prob. 47RQCh. 14 - Prob. 48RQCh. 14 - Prob. 49RQCh. 14 - Why do shell molds have excellent permeability and...Ch. 14 - Prob. 51RQCh. 14 - Prob. 52RQCh. 14 - Prob. 53RQCh. 14 - Prob. 54RQCh. 14 - Prob. 55RQCh. 14 - What is the sand binder in the core-oil process,...Ch. 14 - What is the binder in the hot-box core-making...Ch. 14 - What is the primary attraction of the cold-box...Ch. 14 - What is shelf life? How is it different from bench...Ch. 14 - Prob. 60RQCh. 14 - Prob. 61RQCh. 14 - Prob. 62RQCh. 14 - Prob. 63RQCh. 14 - Prob. 64RQCh. 14 - Prob. 65RQCh. 14 - Why are plaster molds only suitable for the...Ch. 14 - How does the Antioch process provide permeability...Ch. 14 - What is the primary performance difference between...Ch. 14 - Prob. 69RQCh. 14 - Prob. 70RQCh. 14 - Prob. 71RQCh. 14 - Describe the progressive construction of an...Ch. 14 - Why are investment casting molds generally...Ch. 14 - Prob. 74RQCh. 14 - What are some of the attractive features of...Ch. 14 - What recent development has made one-of-a-kind or...Ch. 14 - Prob. 77RQCh. 14 - Prob. 78RQCh. 14 - What are some of the benefits of not having to...Ch. 14 - What are some of the ways by which expanded...Ch. 14 - Prob. 81RQCh. 14 - Prob. 82RQCh. 14 - Prob. 83RQCh. 14 - Prob. 84RQCh. 14 - Prob. 85RQCh. 14 - Prob. 86RQCh. 14 - What are the most common single-use mold...Ch. 14 - What are the most common methods of core...Ch. 14 - Although cores increase the cost of castings, they...Ch. 14 - Several of the additive manufacturing processes...Ch. 14 - Additive manufacturing processes can also build...Ch. 14 - Figure CS-14 shows the hitch ball component of a...
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- CORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. 18: Determine the maximum shear and moment that would be experienced by a 10 m beam if a three-wheelmoving load of 10 kN, 30 kN, and 5 kN respectively will pass it by. The distance between the 1st and 2nd load is 1 m and the distance between the 2nd and 3rd load is 3 m.ANS: Vmax = 40 kN ; Mmax = 100.014 kN-marrow_forwardCORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. 5: A 12-m simply supported bridge is constructed with 100-mm concrete slab deck supported by precastconcrete stringers spaced 800 mm on center. Analyze the stringers when subjected to a moving load consisting of 3 evenly spaced axle loads at 3 m and equivalent to 20 kN, 30 kN and 40 kN respectively. The self-weight of the stringers is 8.5 kN/m and the concrete deck has a unit weight of 24 kN/m3 . Neglect all other superimposed loads. Calculate: (a) the maximum shear force in the stringers; (b) the maximum bending moment in the stringers. Answer: Vmax = 135.020 KN, Mmax = 477.388 KN-Marrow_forwardCORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. 19: A 22-wheeler truck is crossing over 25 m bridge. The dimensions between the axles of the truck are shownin the figure below. Axles 1 to 3 carry a 90 kN load each, axles 4 and 5 carry a 65 kN load each, and the axle directly below the cab of the truck has a load of 100 kN. Determine the maximum shear and moment on the bridge.ANS: Vmax = 374.92 kN ; Mmax = 1,702.229 kN-marrow_forward
- CORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. 1. A H = 6 m cantilever retaining wall is subjected to a soil pressurelinearly varying from zero at the top to 90 kPa at the bottom. As an additionalsupport, it is anchored at depth y = 2 m. with maximum tension equal to 25kN. Assume that the stem provides fully retrained support. Draw the shearand moment diagram of the wall to calculate the following: (a) Maximumpositive bending moment per linear meter; (b) maximum negative bendingmoment per linear meter; (c) maximum shear force per linear meter. answer: +MMax = 440 kn-m, -Mmax = 0kn-M, Vmax = 245 KNarrow_forwardCORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. 17: A simply supported beam with the section shown below has an allowableflexural shearing stress of 43 MPa. (a) Determine the maximum allowable shearing force onthe section. And (b) what is the minimum thickness of plate that should be welded at theflanges if the section is to withstand a total shearing force of 200 kN. The additional plate willhave its base dimension equal to the flange dimension.ANS: V = 179.333 kN ; t = 23.181 mmarrow_forwardCORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. Answer: A = 0.207 L(M)arrow_forward
- Qu 4 The 12-kg slender rod is attached to a spring, which has an unstretched length of 2 m. If the rod is released from rest when 0 = 30°, determine its angular velocity at the instant 0 = 90°. 2 m B k = 40 N/m 2 marrow_forwardCORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. 13: A cantilever beam is of length 1.5 m,loaded by a concentrated load P at its tip as shown inFig. 8-18(a), and is of circular cross section (R = 100 mm),having two symmetrically placed longitudinal holes asindicated. The material is titanium alloy, having anallowable working stress in bending of 600 MPa.Determine the maximum allowable value of the verticalforce P. ANS: P = 236,589.076 N = 236.589 kNarrow_forwardCORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. 15: Consider a beam having an I-type cross section as shown in Fig. 8-45. Ashearing force V of 150 kN acts over the section. Determine the maximum and minimumvalues of the shearing stress in the vertical web of the section.ANS: fv(max) = 44.048 MPa ; fv(min) = 33.202 MPaarrow_forward
- CORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. 12: A steel cantilever beam 16 ft 8 in in length is subjected to a concentrated load of 320 lb acting at the freeend of the bar. A commercially available rolled steel section, designated as W12x32, is used for the beam. Assume that the total depth of the beam is 12 in, and the neutral axis of the section is in the middle. Determine the maximum tensile and compressive stresses. (Properties of commercially available rolled steel section provided in the table. Z = section modulus). ANS: σT = σC = 1,572.482 lb/in2arrow_forwardCORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. 14: Two ½-in x 8-in cover plates are welded to two channels 10 in high to formthe cross section of the beam shown in Fig. 8-59. Loads are in a vertical plane and bendingtakes place about a horizontal axis. The moment of inertia of each channel about ahorizontal axis through the centroid is 78.5 in4. If the maximum allowable elastic bendingstress is 18,000 lb/in2, determine the maximum bending moment that may be developedin the beam.ANS: 1,236,000 lb-in.arrow_forwardCORRECT AND DETAILED HANDWRITTEN SOLUTION WITH FBD ONLY. I WILL UPVOTE THANK YOU. CORRECT ANSWER IS ALREADY PROVIDED. 11: A beam of circular cross section is 7 in in diameter. It is simply supported at each end and loaded by twoconcentrated loads of 20,000 lb each, applied 12 in from the ends of the beam. Determine the maximum bending stressin the beam. ANS: σ = 7,127.172 lb/in2arrow_forward
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