其他摘要：An investigation about energy conserving and numerical stability related to non linear dynamic problems involving large rotations and large displacements is carried out within the framework of IsoGeometric Analysis. A corotational kinematics derived from the exact polar decomposition is used in order to deal with geometrically non linear behavior. The Generalized α (Gα) and Generalized Energy-Momentum Method (GEMM+ξ) are employed with consistent and lumped mass, for a large range of continuity class of basis function. A set of examples are presented in order to show the accuracy and efficiency as well as the improvement of energy conserving and numerical stability.
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