Notes 5 - Consistent Deformation Truss Example

Notes 5 - Consistent Deformation Truss Example - Consistent...

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Consistent Deformations for Trusses - Page 1 of 6 Consistent Deformations for Trusses Objectives: 1. Set up the table to calculate truss deformations 2. Calculate the reactions for a 1-degree indeterminate truss structure The internal work for a truss member is: AE SL S = W i δ The internal work for the entire structure is the sum of all the members’ internal work. For a truss, the number of redundants is; 2N R + M = D where M is the number of members R is the number of reactions N is the number of nodes or joints. if D = 0 then the structure is determinate. D > 0 then the structure is indeterminate to the D th degree D < 0 then the structure is a mechanism (un-stable). Consistent Displacements Truss Example Given the following truss, find the member forces.

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