Q1: For the following structures: 1. Draw shear force and bending moment diagrams after solving the structures in dear
steps (points of zero-moment and zero-shear).
2- Find vertical displacements and rotations at the points (B) and (C) after removing the
vertical redundant Reaction at point B in the first step.
* Consider EI =1 in all calculations.
|
20 KN
А
10 kN/m
B
2
C
0.5 m
1.5 m
1 m
40.5 m/
*
(a)
4 KN
6 KN
3 kN/m
B
A
C
A
*
3m
3m
3m
X
X X
X
(b)

The temperature of air decreases as it is compressed by an adiabatic compressor. a)- true b)- false

Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.