二维桁架桥

Matlab-Code für eine zweidimensionale Fachwerkbrücke.

For the two-dimensional pin-jointed truss bridge shown in Figure 1, the Young’s modulus is

**E = 200 GPa**and the cross sectional area is

**A = 1500mm²**for all truss members. The truss structure is subjected to a varying load F acting downwards in the nodes 6, 7, 8 as depicted in Figure 1.

Create a MatLab computer program to:

1. Compute the global displacements at all nodes, the reactions at the supports and the axial forces in every truss member for

**F = 20 kN**.

Draw the undeformed shape (in blue) and the deformed shape (in red) of the bridge in the same graph. The results are displayed in Figure 2.

Figure 2: It shows the distortion (node displacement) when the force apply given by figure 1. Note that the displacement is exaggerated 100 times.

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