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Level 6 Graduate Diploma in Engineering (9210-01) - City & Guilds

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Unit 135 Mechanics of solids<br />

Assessment Criteria<br />

Outcome 1 Calculate stresses, stra<strong>in</strong> and deflections <strong>in</strong> a range of<br />

components under various load conditions<br />

The learner can:<br />

1. Use Mohr’s Circle to determ<strong>in</strong>e:<br />

a. stresses on <strong>in</strong>cl<strong>in</strong>ed planes<br />

b. comb<strong>in</strong>ed bend<strong>in</strong>g torsion and axial load<strong>in</strong>g.<br />

2. Use and position on components stra<strong>in</strong> gauge rosettes.<br />

3. Use calculations and or graphic means to determ<strong>in</strong>e:<br />

a. shear force and bend<strong>in</strong>g moments <strong>in</strong> laterally loaded beams<br />

b. bend<strong>in</strong>g stress and shear stress distribution <strong>in</strong> beams<br />

c. deflection of beams<br />

d. solution of statically <strong>in</strong>determ<strong>in</strong>ate beams<br />

e. centre of shear <strong>in</strong> beams.<br />

4. Extend shear force, bend<strong>in</strong>g moment, bend<strong>in</strong>g stress, shear stress and deflection analysis to:<br />

a. beams of asymmetric cross section<br />

b. composite beams<br />

c. beams of ‘elastic-perfectly plastic’ material.<br />

5. Determ<strong>in</strong>e shear stress and twist of:<br />

a. circular solid sections<br />

b. th<strong>in</strong> walled cyl<strong>in</strong>ders<br />

c. simple open sections.<br />

6. Apply Euler critical loads to determ<strong>in</strong>e buckl<strong>in</strong>g for a comb<strong>in</strong>ation of:<br />

a. free conditions<br />

b. p<strong>in</strong>ned conditions<br />

c. built <strong>in</strong> end conditions.<br />

7. Determ<strong>in</strong>e limit<strong>in</strong>g stress condition.<br />

8. Use analytical methods to determ<strong>in</strong>e stresses and displacements <strong>in</strong> r<strong>in</strong>gs, cyl<strong>in</strong>ders and discs<br />

under axi-symmetric load<strong>in</strong>g:<br />

a. <strong>in</strong>ternal/external pressure<br />

b. shr<strong>in</strong>k fits<br />

c. rotation.<br />

9. Apply Lame equations to problem solv<strong>in</strong>g.<br />

10. Employ F<strong>in</strong>ite Element Analysis:<br />

a. discretisation<br />

b. types of elements<br />

c. relationship between<br />

i nodal forces<br />

ii nodal displacements<br />

iii stiffness matrix.<br />

11. Represent examples of l<strong>in</strong>ear elements us<strong>in</strong>g spr<strong>in</strong>gs.<br />

12. Obta<strong>in</strong> stiffness matrix us<strong>in</strong>g:<br />

a. one-dimensional quadratic elements<br />

b. displacement functions<br />

c. shape functions<br />

170 <strong>Level</strong> 6 <strong>Graduate</strong> <strong>Diploma</strong> <strong>in</strong> Eng<strong>in</strong>eer<strong>in</strong>g (<strong>9210</strong>-<strong>01</strong>)

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