Question

Q2. Statically determinate or indeterminate truss analysis by the stiffness method. (50 marks)
a) Determine the stiffness matrix of the whole truss given in problems 14.9 and 14.10 (p. 583). Indicate the degrees-of freedom in all the stiffness matrices. (18 marks)
b) Calculate all the nodal displacements and all the member forces for the truss.
(16 marks)

14-9. Determine the stiffness matrix K for the trus Take A 0.0015 m2 and E 200 GPa for each member. 2 12 4 3 m 4 6 3 4 m 7 kN

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Answer #1

Membe Sfress manx 国3m K.AE 7kN Member 2,-) → Member 12 5 6 Membe →Member 5 6 3 member 5> 5 -61-0-18 -06 +0.4o 5 2 E04a 0.36 tOveal Shuchoal ses mahix AE = 300 x IoON 0.398 0.096-0-128-ooOS oo -o35 096 oryo53 -0096 -002 o -0333 -0-128-0.0% 0.378 o.o960:0138 0.0438 。6563 o IS19 0077 583 SAw 583 5N member 3 02297 0-6563 6563N -729.1) N 20 mwber -0 078 0 221 -o 6S63 Ji nsi.

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Q2. Statically determinate or indeterminate truss analysis by the stiffness method. (50 marks) a) Determine the stiffness matrix of the whole truss given in problems 14.9 and 14.10 (p. 583). Indicate...
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