Experiment and Finite-element-method Analysis of Steel Frame Joints Transferring Forces Outside Box Columns

Based on experimental results of two steel frame joints transferring forces outside box columns and two simple joints without inner diaphragms, by widely used finite-element-method program ANSYS, these two types of steel frame joints and traditional joints with inner diaphragms were modeled in this paper. By comparing their load-displacement curves, distributions of Von-Mises stresses and stresses path, effectiveness of the adding force-transforming plates was proofed. The carrying capacities of joints transferring forces outside box columns by adding force-transforming plates are much greater than those of joints without inner diaphragms, and are close to those of traditional joints. The adding force-transforming plates can effectively reduce the stresses of panel zone and change the way of transmitting stresses, and the brittle fracture near the butt weld with high stresses can be avoided

A Novel Algorithm Combining Finite State Method and Genetic Algorithm for Solving Crude Oil Scheduling Problem

A hybrid optimization algorithm combining finite state method (FSM) and genetic algorithm (GA) is proposed to solve the crude oil scheduling problem. The FSM and GA are combined to take the advantage of each method and compensate deficiencies of individual methods. In the proposed algorithm, the finite state method makes up for the weakness of GA which is poor at local searching ability. The heuristic returned by the FSM can guide the GA algorithm towards good solutions. The idea behind this is that we can generate promising substructure or partial solution by using FSM. Furthermore, the FSM can guarantee that the entire solution space is uniformly covered. Therefore, the combination of the two algorithms has better global performance than the existing GA or FSM which is operated individually. Finally, a real-life crude oil scheduling problem from the literature is used for conducting simulation. The experimental results validate that the proposed method outperforms the state-of-art GA method

Modeling realistic Earth matter density for CP violation in neutrino oscillation

We examine the effect of a more realistic Earth matter density model which takes into account of the local density variations along the baseline of a possi ble 2100 km very long baseline neutrino oscillation experiment. Its influence to the measurement of CP violation is investigated and a comparison with the commonly used global density models made. Significant differences are found in the comparison of the results of the different density models.Comment: 16 pages, 8 figure