Abstract: A time domain identification method for distributed dynamic loads on 1D spatial structures was proposed. Based on the idea of spatial and temporal divisions, the formula and process for load time history identification were derived. The load identification program was compiled by means of MATLAB, an...
Abstract: The adaptive chaos control (ACC) method was an efficient and robust method for inverse reliability analysis. However, for strongly nonlinear concave performance functions, the computational efficiency of ACC still needs to be enhanced. Moreover, it might be trapped in the local optimum. Through revi...
Abstract: A symplectic approach based on canonical transformation and generating functions was proposed to solve boundary-value problems of linear Hamiltonian systems. According to the relationship between the generating function and the state-transition matrix, an interval merge recursive algorithm was const...
Abstract: To describe the material mechanics behaviors depending on microstructure, the gradient elastic theory with significant advantages was investigated. The gradient elastic theory was combined with the damage theory to consider the influence of microstructure on material failure. Then a modified gradien...
Abstract: The fundamental solution plays an essential role in many numerical methods such as the boundary element method (BEM), the method of fundamental solution and the boundarytype meshless methods. For fracture problems, application of fundamental solutions in domains with cracks can avoid deeming the cr...
Abstract: The slips in a suspended packer are very important components to ensure success of the horizontal well reconstruction technology. They can support and fasten the packer and lock the rubber when they are anchored. But the casing is liable to failure under the effect of slips since it’s a thinwall cy...
Abstract: To explore the numerical solution method for geometrically nonlinear problems, the theoretical derivation, the MATLAB programming and the finite element simulation were used together. Based on the S-R decomposition theorem, the interpolated element-free Galerkin method was applied to deduce the incr...
Abstract: The stability of gas drainage drilling affects the quality of extraction engineering. Under the action of mining, underfloor kilometer drillings distributed at different horizons have different loading and unloading paths. To get the influence of mining on borehole stability, the loading and unloadi...
Abstract: The nonlinear KdV equation under external forcing was deduced from the potential vorticity equation involving both the vertical and the horizontal components of the Coriolis force with the perturbation method near the equatorial Rossby waves. Then the periodic solution of the model was obtained by m...
Abstract: According to the mechanics theories and the classical electromagnetism, the motion of 2-dyon systems was studied. Some integrals of motion, including the energy integral, the total angular momentum integral and the Runge-Lenz-like integral, were derived from the differential equations of motion for ...
Abstract: In infinitedimensional Hilbert spaces, the modified Halpern iteration and viscosity approximation methods for solving the split feasibility problems (SFPs) were proposed. When the parameters satisfy certain conditions, it is proved that the sequences generated with the proposed algorithms converge ...
