The　pure　shear　testpiece　is　commonly　used　for　study　of　fracture　in　rubber　because　the　tearing　energy　is　independent　of　crack　length　provided　the　crack　length　is　long　relative　to　its　height.　Calculations　of　strain　energy　release　rates　have　been　made　by　nonlinear　finite　element　analysis　for　a　rubber　pure　shear　testpiece　with　a　central　crack　or　a　edge　crack　in　the　testpiece　or　at　the　rubber-to-metal　bond.　Nonlinear　finite　element　analysis　results　for　the　strain　energy　release　rate　are　compared　with　the　previous　results.　Finite　element　analysis　results　for　the　strain　energy　release　rate　agree　with　the　published　solution　for　long　cracks.　However,　they　disagree　with　the　solution　for　short　cracks.