To　study　the　shape　memory　behavior　of　a　novel　hinge　based　on　shape　memory　polymers　and　the　reinforcing　effect　of　metal　materials　on　the　shape　memory　polymer　(SMP)　hinge,　a　user-defined　material　mechanical　behavior　(UMAT)　subroutine　available　for　ABAQUS　was　written　and　a　finite　element　method　for　SMP　complex　structures　was　developed　based　on　a　three　dimensional　SMP　stress-strain-temperature　relationship.　Using　the　method,　folded　and　unfolded　shape　memory　behaviors　of　the　SMP　hinge,　including　loading　under　high　temperatures,　cooling,　unloading　under　low　temperatures　and　heating,　were　simulated.　The　folding　processes　of　the　reinforced　SMP　composite　hinge　were　simulated　and　discussed.　Results　show　that　the　SMP　hinge　after　forward　and　reverse　folding　can　be　automatically　expanded　by　controling　the　temperature,　therefore,　it　can　effectively　solve　the　problem　of　driving　complex　and　overshoot　vibration　in　the　traditional　hinge.　Critical　bending　moment　and　steady　bending　moment　of　the　metal-reinforced　SMP　composite　hinge　are　significantly　improved,　in　which　the　reinforcing　effects　decrease　in　order　of　alloy　steel,　cast　steel,　gray　iron　and　duralumin.　©　2017,　Editorial　Department　of　Journal　of　Beijing　University　of　Technology.　All　right　reserved.