Holcomb, Bernadette Mullins. Boston University. Kanold, Lee Stiff. Norkin, D. Joyce White. Grondzik, Alison G. Lindeburg PE. Gere, Barry J. Murray PhD, Ken S. Rosenthal PhD, Michael A. Pfaller MD. Boulpaep MD. Edward Johnson. Meggs, Alston W. Robert Jacobs, Richard Chase. Johnny Rungtusanatham, Susan Goldstein. Brown, Brent L. Iverson, Eric Anslyn, Christopher S.
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If you still need more books as references, going to search the title and theme in this site is available. You will find more lots books in various disciplines. Consider only those forces acting directly on joint A. FAC FBD FCD ACD 2, The cross-sectional area of bar 1 is 1. The normal stress in either bar may not exceed 24 ksi. Determine the maximum load P that may be applied to this assembly. The answer obtained in Eq. Correct method for calculating the capacity of the two-bar assembly: The allowable load that can be applied to this two-bar assembly will be the load P that produces the allowable load in either member 1 or member 2.
We will assume that the force in member 1 will control the capacity of the two-bar assembly. This calculation shows that the force in member 2 will exceed its allowable force when the force in member 1 equals its allowable force. Therefore, our assumption is proved incorrect. This result shows us that the force in member 2 will control the capacity of the two-bar assembly.
We now know the forces in members 1 and 2 that will satisfy the equilibrium equations without exceeding the allowable force in either member. Determine the magnitude of the maximum normal stress in the bar and its location x. Stress: The normal stress at this location can be calculated as follows.
What is the magnitude of the average shear stress in the wood specimen at failure? The finger joint will fail when the average shear stress in the glue reaches kPa.
The minimum shear area that is required for this connection can be determined from the load P and the shear strength of the glue. Consequently, we P 5. For this particular joint, there are seven surfaces that will be glued. Each of these surfaces has a length of d and a thickness of 19 mm. Abolt 0. If the average shear stress in the bolts must be limited to 30 ksi, what is the minimum bolt diameter that may be used for this connection?
If the average shear stress in the key must not exceed MPa, determine the minimum dimension a that must be used if the key is 25 mm long. L 25 mm Excerpts from this work may be reproduced by instructors for distribution on a not-for-profit basis for testing or instructional purposes only to students enrolled in courses for which the textbook has been adopted. The column has a cross- sectional area of 14, mm2. If the average normal stress in the steel column must not exceed 75 MPa, determine the minimum required dimension a so that the bearing stress between the base plate and the concrete slab does not exceed 8 MPa.
Washers are installed under the head of the bolt and under the nut. The nut is tightened to cause a tensile stress of 9, psi in the bolt.
Determine the bearing stress between the washer and the wood. Determine the size of square bearing plates required to support the loading shown. What is the average bearing stress in the wood beam? The bracket has two vertical pieces i. The resultant force R is divided equally between these two vertical pieces.
Therefore, the force exerted by the pin on one of the vertical bracket pieces is The average bearing stress in the bracket is based on the projected area of the pin. Ab dt Excerpts from this work may be reproduced by instructors for distribution on a not-for-profit basis for testing or instructional purposes only to students enrolled in courses for which the textbook has been adopted.
When a load P is applied to the rod, the rod head rests on the support plate. If the normal stress produced in the rod by load P is MPa, determine: a the average bearing stress acting between the support plate and the rod head. The box beam is also supported by a roller that is located at B. Determine: a the average shear stress in the pin at A. AV AV 0. The projected area is equal to the pin diameter times the wall thickness of the box beam, taking into account that there are two walls that contact the pin.
Ay 15, lb psi 28, psi Ans. Tie rod 1 has a diameter of 5 mm, and it is supported by double-shear pin connections at B and D.
The pin at bracket A is a single-shear connection. All pins are 7 mm in diameter. The bell crank is supported by a mm-diameter pin at B that acts in single shear.
Determine the the bell crank is 5 mm. The average bearing stress produced in the bell crank by the pin is based on the projected area of the pin. The projected area is equal to the pin diameter times the bell crank thickness. Each 1. Determine the minimum diameter d required for pin B for each of the following conditions: a The average shear stress in the pin may not exceed 40 MPa.
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