An energy-momentum conserving algorithm for nonlinear transient analysis within the framework of hybrid elements... Hybrid elements, which are based on a two-field variational formulation, are much less susceptible to locking than conventional displacement-based elements within the static framework....
Mixed force and displacement control strategy in pseudo-dynamic tests for structures with large stiffness... Numerical and experimental validations show that this method exhibits excellent performance in terms of stability and accuracy if proper controller parameters are adopted and is superior to the conventional displacement control method for large-stiffness structures
Traction free finite elements with the assumed stress hybrid model... Conventional displacement and assumed stress finite elements were used in the determination of stress concentrations around circular and elliptical holes....
Noncontacting devices to indicate deflection and vibration of turbopump internal rotating partsPublished report discusses feasibility of ultrasonic techniques; neutron techniques; X-radiography; optical devices; gamma ray devices; and conventional displacement sensors....
