Abstract
A finite element code for geometrically non-linear structures with conservative one-parameter loading is under development. The finite deformation theory is expressed in displacement gradients and the finite element approximation for translational variables only is introduced as late as possible. A p-method with hierarchical Legendre polynomial approximation over the elements is used. In order to follow the non-linear equilibrium path an incremental algorithm driven by the dominant displacement component is implemented. A Total Lagrange formulation is applied. Numerical tests on three-dimensional trusses and a plane frame with thin beams are demonstrated. Copyright © 1999 John Wiley & Sons, Ltd.
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