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A single four-node element in its initial position is considered as a section of a component in the plane stress state. The nodal coordinates of the initial position as well as the nodal displacements due to the loading of the entire component are shown in Fig. 1 given. E =76000 MPa and v= 0.25 should be assumed as material values

Fig1: Node coordinates undand displacements u ef a planar four-node element (inmm) a) Determine the element stiffness matrix for the element shown. To do this, specify a self-selected node connectivity. Work at the numeric Integration with a Gauss point. b) Which stresses and distortions arise at the integration point?

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