For 1-D bar elements if the structure is having 3 nodes then the stiffness matrix formed is having an order of
A)2*2
B)3*3
C)4*4
D)6*6

Question

Quizplus · Accepted Answer

The stiffness matrix for a 1-D bar element is based on the number of nodes in the structure. Each node has a degree of freedom (in the simplest case, this would be linear displacement along the bar's axis). Therefore, for a structure with 3 nodes, the stiffness matrix will have an order of 3*3, accounting for the displacement at each of the 3 nodes.

For 1-D Bar Elements If the Structure Is Having 3