In the present paper, a numerical study is performed to investigate the response of different plates aluminum alloys subjected to low velocity impact condition. In this regard, the square AA5083-H116 aluminum plates with dimensions 300×300 and 3 mm and 5 mm thick under low velocity impact are modelled, and a mesh convergence study is carried out to decide the appropriate number of elements. In ...

HD72089 is situated behind the Vela supernova remnant, and the interstellar absorption lines in the spectrum of this star are remarkable for two reasons. First, there are 6 distinct velocity components that span the (heliocentric) velocity range ?60 to +121 km s ?1 in the lines of Na I and Ca II. Second, two of the components at high velocity, one at +85 km s ?1 and another at +121.5 km s ?1 , ...