Abstract: In the case of small elements, it is difficult to obtain accurate stress fields and stress concentration with existing nonuniform models. An optimization algorithm for the theory of the PHSEM (polygonal hybrid stress element method) was proposed with the direct restriction method. The advantages of...
Abstract: The anti-plane problem of cracks near regular hexagonal holes in 1D hexagonal piezoelectric quasicrystals was studied. By means of the Cauchy integral formula in the complex variable functions and through construction of conformal mapping functions, the analytical solutions of stress distribution an...
Abstract: The problem of lateral vibration of axially moving beams and the method for studying lateral vibration of axially moving beams were discussed. Some errors in the previous research of lateral vibration of axially moving beams were pointed out and corrected. For the axially moving cantilever beam with...
Abstract: The transformation method with which the surrounding rock stress was mapped to an actual area, has been more and more widely applied to engineering practice, which is of practical guiding significance to the stress calculation method and the study on stability of tunnel surrounding rock. A mechanica...
Abstract: A semi-analytical 1D consolidation solution of saturated soft clay was derived via the Laplace transform by means of the spring pot-based fractional-order Kelvin model and in view of changing inner stresses along the depth of the soft clay. Firstly, the validity of the semi-analytical solution was v...
Abstract: Based on the definition of the distortion angle presented for trapezoidal-section box girders, according to the theories for the traditional concrete box girder and the mechanical properties of the corrugated steel web, the distortion warping stresses of the corrugated steel web composite box girder...
Abstract: Some Duffing systems with external excitation and quintic nonlinear restoring forces were considered, the amplitude-frequency response equation for the system was obtained with the multi-scale method, and the amplitude-frequency characteristic curves and their changing rules under different paramete...
Abstract: Simulation of the non-Newtonian fluid flow is an interesting problem for engineers. As a relatively new particle-based method, the material point method (MPM), combining the advantages of both the Lagrangian algorithm and the Eulerian algorithm, has been widely and effectively used to solve complex ...
Abstract: The naturally vuggy and fractured carbonate rock plays an important role in China's oil and gas resources. Therefore, it is of great significance to study the characteristics of well bottom pressure in fracture-vug carbonate rock for hydraulic fractured wells. According to the basic principle of see...
Abstract: The slotting method is a simple flow passive control method. In order to search for a passive control method that can effectively mitigate the bladevortex interaction effects, a NACA 0012 airfoil was used as the research object, 4 kinds of the NACA 0012 airfoil models with differently slotted leadi...
