Need Help Engineering Of Materials 1 (71.8 KiB) Viewed 12 times
Need Help Engineering Of Materials 2 (57.52 KiB) Viewed 12 times
Engr225 Problem 2 The beam shown has a fixed support at D. It is subjected to the loadings shown. The point moment is applied at point C, at a distance of 8m from point D, the right end of the beam. The beam's cross-section is shown on the right, use a=12 cm and b = 8cm. b 2 kN/m 20 kNm D A B 8m + 4 m 8m a. Find the reactions at D. Draw a FBD to support your work. b. Make a section cut, draw its FBD, and use it to find the mathematical equations for V(x) and M(x) in region A-B. 2 a
Engr225 c. Draw the load-shear-moment diagram for the beam using the same format as in class. Include ALL relevant numbers, i.e. label the y-axes in your diagram with units and numbers for important points. Note: Label parabolic or cubic curves 'parabolic' or 'cubic'. Draw straight lines straight! Indicate briefly how you find relevant numbers (e.g. this = area under that, or (this is the slope of that'). At what x does the moment has its largest value (magnitude)? At x= from point A. m, as counted d. Find the largest tensile normal stress produced by largest moment. Does it occur at the top or the bottom of the beam? Explain using the equation for the bending stress.
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