Effect of Defect on Structural and Optical Properties in Methyl Ammonium Lead Iodide MAPI Perovskite via First Principles Calculations
Foam metal is extensively used in the fields of petrochemical engineering, aerospace and automobile manufacturing for its excellent properties. As a typical representative of foam metal,Aluminum foam is an excellent material in energy absorption,that it can produce larger plastic deformation under the lower flow stress.Relative to the cell dimension,the size of specimen is an important factor which affects the performance of its energy absorption. Based on the technological process of the infiltration casting method, a microscopic structure model of aluminum foam is established by Monte Carlo method and Gravity Accumulation method ,with the assistance of PFC3D software so as to study the influence of size scale effect on energy absorption property of aluminum foam. A finite element model of aluminum foam is generated according to MATLAB software. Combining with SPH algorithm, numerical simulation to the compression behavior of the different specimen size of aluminum foam is performed. From numerical simulation,we can draw the conclusion that the greater the ratio of specimen dimension to cell dimension is,the better energy absorption property it performs. The results can provide assistance on design buffer suction device with foam mental. (Mon. Oct 29, 2018 5:45 PM 8:00 PM Poster Hall)