A method is presented that coordinates the calculation of the displacement, velocity and acceleration of structures within the time-steps of different types of step-by-step integration. The dynamic equation is solved ...A method is presented that coordinates the calculation of the displacement, velocity and acceleration of structures within the time-steps of different types of step-by-step integration. The dynamic equation is solved using an energy equation and the calculating data of the original method. The method presented is better than the original method in terms of calculating postulations and is in better conformity with the system's movement. Take the Wilson-θ method as an example. By using the coordination process, the calculation precision has been greatly im proved (reducing the errors by approximately 90% ), and the greater part of overshooting of the calculation result has been eliminated. The study suggests that the mal-coordination of the motion parameters within the time-step is the major factor that contributes to the result errors of step-by-step integration for the dynamic equation.展开更多
Urban forest isan importantcomposition and the window and soul of modern cities, which has a close relationship with ecologicalenvironment andinvesting environment. Sourban foresthasbeen constructed in China. Huaining...Urban forest isan importantcomposition and the window and soul of modern cities, which has a close relationship with ecologicalenvironment andinvesting environment. Sourban foresthasbeen constructed in China. Huaining County could hold of the historical opportunity and come up with the great blueprintof forest ecological network system construction for the new town. This paper mainly introduces the guiding ideas, principles, goals and overall layouts of the construction in the new town, and hope that it will be a modelfor other county-level forest ecological network system construction in China.展开更多
文摘A method is presented that coordinates the calculation of the displacement, velocity and acceleration of structures within the time-steps of different types of step-by-step integration. The dynamic equation is solved using an energy equation and the calculating data of the original method. The method presented is better than the original method in terms of calculating postulations and is in better conformity with the system's movement. Take the Wilson-θ method as an example. By using the coordination process, the calculation precision has been greatly im proved (reducing the errors by approximately 90% ), and the greater part of overshooting of the calculation result has been eliminated. The study suggests that the mal-coordination of the motion parameters within the time-step is the major factor that contributes to the result errors of step-by-step integration for the dynamic equation.
文摘Urban forest isan importantcomposition and the window and soul of modern cities, which has a close relationship with ecologicalenvironment andinvesting environment. Sourban foresthasbeen constructed in China. Huaining County could hold of the historical opportunity and come up with the great blueprintof forest ecological network system construction for the new town. This paper mainly introduces the guiding ideas, principles, goals and overall layouts of the construction in the new town, and hope that it will be a modelfor other county-level forest ecological network system construction in China.
