Abstract: The elastic buckling critical load is a crucial indicator for accurately assessing the load-bearing capacity of cold-formed steel components. The artificial neural networks were used to predict the buckling loads on cold-formed flanged steel columns, with geometric parameters and finite strip method...
Abstract: The steam jetting during the double-end fracture of high-energy pipelines was studied through numerical simulations. The effects of stagnation pressure and pipe wall friction on the jet cone and impingement forces were investigated, and the patterns of velocity, temperature, and pressure in the jet ...
Abstract: The dynamic stiffness method (DSM) was employed to describe dynamic responses of periodic lattices composed of multi-segment beams (MSBs), and the dispersion characteristics were examined based on the Wittrick-Williams algorithm (WWA). First, the dynamic stiffness matrix of the MSB was obtained with...
Abstract: The deformation modes and energy absorption performances of thin-walled concave profile tubes subjected to axial crash were investigated, and the advantages of concave tubes over conventional convex polygonal tubes in improving energy absorption performances were demonstrated. The classification of ...
Abstract: The effects of impact positions (offset ratios) on the dynamic behaviors of Q235 steel thin-walled cylindrical shells under lateral impacts by foam projectiles were explored with finite element software ABAQUS/Explicit. Based on existing experimental results, the accuracy of the finite element model...
Abstract: The membrane is one of the most widely used structures in engineering. Because the theoretical solution of the structure's natural vibration characteristics is related to the trigonometric function family, the accuracy of the finite element solution is not very high by the conventional low-order ele...
Abstract: The vertical vibration control of nonlinear viscoelastic vibration isolation systems with time delay feedback was studied. Based on the viscoelastic nonlinear Zener model, a time delay controller was introduced to establish the mathematical model for time delay feedback viscoelastic vibration isolat...
Abstract: Aimed at the complexity of the effects of the multi-degree-of-freedom series-parallel-Ⅱ inerter system (SPIS-Ⅱ) on the damping and reliability of structures, the dynamic responses of the energy dissipation structure were studied with the power spectrum quadratic decomposition method. The reconstruct...
Abstract: The unsteady flow caused by the rotor-stator interaction is the primary excitation source for the forced response of the blade/blisk. A more accurate and comprehensive characterization of the spatiotemporal features of the rotor-stator interaction unsteady flow field is of significance for the analy...
Abstract: Judging overflow accidents based on well logging parameters relies heavily on the experience of on-duty personnel, and the comprehensive well logging parameters collected in-situ have severe noises and unclear parameter change characteristics, resulting in low accuracy of overflow monitoring. A mult...
Abstract: Based on the wellbore multiphase flow theory and the calculation method for wellbore trajectories, a dynamic well killing mathematical model for complex well structures was established, and the finite difference method was used to solve it. The wellbore pressures during the well killing process were...
