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Bionic knee was important basic driving element for biped robot. with the adult male's right leg knee working as bionic prototype, the three-dimensional finite element model was established, and the cinnections balance equation was established with the help of nonlinear contact theory, then system penalty function was used to deal with the contact constraint by considering the minimum potential energy...
This paper examines the use of eigenvector orientation method to detect the onset of subsonic and supersonic flutter of panels modeled by finite elements. The accuracy of the eigenvector orientation method for prediction of the flutter boundary (indicated by a gradual loss of orthogonality between two eigenvectors) is demonstrated by using the examples of a swept-back cantilever plate model at subsonic...
This paper examines the use of eigenvector orientation method to detect the onset of nonlinear supersonic flutter of composite plate modeled by finite elements. The accuracy of the eigenvector orientation method for prediction of the flutter boundary (indicated by a gradual loss of orthogonality between two eigenvectors) is demonstrated by using the example of a simply supported composite plate model...
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