This paper addresses the methods to get the optimum whole life-cycle cost (LCC) for skeleton-infill type apartment. From the aspect of seismicity, this method establishes functional relationships between the initial c...This paper addresses the methods to get the optimum whole life-cycle cost (LCC) for skeleton-infill type apartment. From the aspect of seismicity, this method establishes functional relationships between the initial cost, the maintenance cost, and repaircost of the LCC respectively with the parameter of damping ratio which is closely related with seismicity, and ultimately applies the function of damping ratio to show the LCC and obtains the optimum value of Damping Ratio.展开更多
The microstructures and properties of A1-45%Si alloy prepared by liquid-solid separation （LSS） process and spray deposition （SD） were studied. The results show that the size, shape and distribution of the primary ...The microstructures and properties of A1-45%Si alloy prepared by liquid-solid separation （LSS） process and spray deposition （SD） were studied. The results show that the size, shape and distribution of the primary Si phase have different influence on the properties of alloys. Comparing with the Si particles with irregular shape, fine size and continuous distribution in SD alloy, the primary Si phase in LSS alloy is sphere-like, coarse and surrounded by the continuous AI matrix. The microstructure features of LSS alloy are beneficial to the higher thermal conductivity and lower thermal expansion coefficient at room temperature. The fine Si particle in SD alloy is advantageous to improving the mechanical properties. The increasing rates of thermal expansion coefficient with temperature are influenced by the distribution of the Si particles, where a lower rate is obtained in SD alloy with continuous Si particles. The agreement of thermal expansion coefficient with the model in LSS alloy differs from that in the SD alloy because of the different microstructure characteristics.展开更多
文摘This paper addresses the methods to get the optimum whole life-cycle cost (LCC) for skeleton-infill type apartment. From the aspect of seismicity, this method establishes functional relationships between the initial cost, the maintenance cost, and repaircost of the LCC respectively with the parameter of damping ratio which is closely related with seismicity, and ultimately applies the function of damping ratio to show the LCC and obtains the optimum value of Damping Ratio.
文摘The microstructures and properties of A1-45%Si alloy prepared by liquid-solid separation （LSS） process and spray deposition （SD） were studied. The results show that the size, shape and distribution of the primary Si phase have different influence on the properties of alloys. Comparing with the Si particles with irregular shape, fine size and continuous distribution in SD alloy, the primary Si phase in LSS alloy is sphere-like, coarse and surrounded by the continuous AI matrix. The microstructure features of LSS alloy are beneficial to the higher thermal conductivity and lower thermal expansion coefficient at room temperature. The fine Si particle in SD alloy is advantageous to improving the mechanical properties. The increasing rates of thermal expansion coefficient with temperature are influenced by the distribution of the Si particles, where a lower rate is obtained in SD alloy with continuous Si particles. The agreement of thermal expansion coefficient with the model in LSS alloy differs from that in the SD alloy because of the different microstructure characteristics.
