Compatibility equations ho-XaEu a E T -a Xa C Es Z ho 1 ho T Equilibrium equation T+C=T M=CZ+T(ho-a)Compatibility equations u a a s x h x     0 u a a s x x a   ' '      1 0   h u s s  's  u  xa 0 h Equilibrium equation ( ) ' 0 ' ' M CZ T h a T C T      C Z T’ T