For the displacement field,

$1$ X$2$X$3$ u $=$ k $,$

$2$ X$1$X$3$ u $=$ k $,()$

$2$

$3$ X$1$X$3$ X$1$ u $=$ k $+,$

$6$

$10$

k $=$

$,$ find

the maximum unit elongation for an element is initially at $(1,0,0).$Problem $2$:

For the displacement field, $u_1=k{x}_2{x}_3,u_2=k{x}_1{x}_3,u_3=k(x_1{x}_3+x_1^2),k={10}^{-6},$ find

the maximum unit elongation for an element is initially at $(1,0,0).$