Learning Forum

[peteroznewman]

Array na node connected to 8 hex elements would have 8 different displacements coming from each elementnThat is not the right way to think about it. Instead, think that displacement of a node connected to 8 elements is unknown, but the stiffness of those 8 elements will be used to compute the displacement of that node in a big stiffness matrix that has all the other nodes in it as well. nEach linear hex element has 8 nodes, but only one node on each element is shared by the 8 elements. The other 7 nodes on each element have different displacements, so each element has its own unique strain, and therefore stress.nThe nodal displacements are the solution. That is the starting point for all post-processing. The shape function is used to interpolate displacement locally within the element.n