Structural analysis has come a long way since the arly days of computers when Livey's matrix methods wer promoted in the 1960s to solve frame structures. We can even go back to the mid-1600s for Robert Hooke's elastic springs, Euler in the 1700s for eladtic curves, folowed by the likes of Navier. Young, Cauchy, Poisson, Lame, Sainte-Ventant and Krichhoff in the 1800s and them mohr and, of course Timoshenko, for the development of ealsticity theory. zienkieiwicz was in the right place at the right time to show, around 1970, how the computational finite element method buld be used to solve the aalystical equations for structures of arbitrary geometry.
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