... difference method, 28 0key parameter, 28 5time step, 27 9, 28 5what is it, 27 9 Finite element, 2, 12 Finite element analysis (FEA). See Finite element method (FEM) Finite element formulationaxisymmetric ... the 2 × 2 matrix[A]=a11a 12 a 21 a 22 (A.14)for which the determinant is defined as|A|=a11a 12 a 21 a 22 ≡ a11a 22 −a 12 a 21 (A.15)Given the definition of ... as follows:xy100 21 8 0311144918 527 18 629 14736 06 ft 6 ft1500 lb 120 0 lb 20 00 lb1000 lb1 2 12 ft 12 ft8 ft4 ft57436Hutton: Fundamentals of Finite Element Analysis Back Matter...