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Large-scale wind turbine structure is simplified as a slender cantilever beam with variable sections subject to complex loads configuration. An analytical procedure to estimate not only natural frequencies but also vibration mode shapes of thin-walled tubular beam by transfer matrix method is presented. The dynamic transfer matrixes of bending and torsional vibration are derived from directly solving...
The basic ant colony algorithm for mobile robot path planning exists many problems, such as lack of stability, algorithm premature convergence, more difficult to find optimal solution for complex problems and so on. This paper proposes improvement measures. Apply genetic algorithm to optimization and configuration parameters of the basic ant colony algorithm. Simulation results show that the improved...
Since the limit state function of the mechanical structure is an implicit function of the uncertain variables, it is difficult to analyze structure reliability by means of using conventional methods. A method obtained the non-probability reliability index the basis of support vector machines is proposed for solving more complexity or implicitly of the limit state function. The uncertain variables...
NURBS (Non-Uniform Rational B-Spline) is the most popular mathematical descriptor for surface modeling. To construct steam turbine blade efficiently and accurately, 2×3 NURBS was obtained to fitted blade surface as its cross-section is different tangent subsection arc and portrait is a free surface. Insert data points to unify the curve segments number of cross-section and insert the node to unity...
This paper obtains the distribution range of steam turbine blade's static response by non-probabilistic interval analysis method. To improve the strength reliability of blade, the uncertainty of the material properties, Geometry parameters, load, and speed of turbine blade must be considered. Based on the uncertain factors of influencing the static characteristics of the steam turbine blade, expressed...
Base-isolated technology which is usually used for architecture is applied for dry-type air core reactor mathematical model of reactor is constructed and natural seismic waves are loaded . The result testifies that is feasible.
A new method is put forward for analysis bending deflection of the wind-turbine steel tower based on transfer matrix method. The steel tower of wind-turbine structure is simplified as a beam-column with varying diameter involve in bending and torsion. The transfer matrix is obtained by solution of the differential equations of beam-column subject to an axial force and other complex loads in 2-dimension...
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