Each node has degrees of freedom in dimensions.

The 2-node bar element is appropriate only for small displacements, because it considers the orientation of the bar to be constant.

Each node has degrees of freedom in dimensions.

The 2-node bar element is appropriate for small and large displacements, because it considers the reorientation of the bar through its displacements.

The stiffness matrix of a 2-node bar element that is oriented vertically (i.e., which points in the -direction) has 6 non-zero entries.

... can be computed by applying a displacement of 1 to all nodes simultaneously and then identifying the resulting forces at all nodes.

... depends on the nodal displacements.

... is constant.

... depends only on Young's modulus, the cross-sectional area, and the element's undeformed length.

... is of size 4x4.

... depends only on Young's modulus, the cross-sectional area, the element's undeformed length, and the bar's orientation angle.

... is of size 6x6.

chmod 155 script.sh

chmod 144

script.sh

chmod 777 script.sh

chmod 744

script.sh

chmod 755 script.sh