... and y = yi, u must equal Ui, and v must equal Vj. This means that at I, N, must equal 1, and N, and Nk must equal zero. Similarly, at J, Nj= 1, and N, and Nk= 0; and at K, Njc= 1, and Ni and ... Zienkiewicz in UK, and Clou^, Wilson, Oden, and numerous others in USA, pushed the frontiers of finite element knowledge and applications fast and wide. Between the 1950s and 1970s, applications ... applications beyond linear structural analysis, to non-linear and plastic behaviour, to fluids and g^ses, to dynamics and stability, to thermal and other field problems, because all of them involved...