Answer the questions in brief: (a) What is meant by the term “higher order elements?” (“Higher” than what?) (b) How many independent material properties exist for an isotropic material? (c) If a...

Answer the questions in brief: (a) What is meant by the term “higher order elements?” (“Higher” than what?) (b) How many independent material properties exist for an isotropic material? (c) If a two-dimensional element for plane stress/plane strain is shaped as a six-node hexagon, what are the dimensions of k and B ? (d) Comment on what is meant by convergence in FEA. Search internet sources to learn h -convergence and p -convergence.