A STUDY ABOUT WAVE PROPAGATION BEHAVIOR OF SPATIAL STRUCTURES : Impact response analysis of single layer lattice domes

Abstract

Many research have been presented abeut the wave propagation behaviou 【s of continuum spatial structures such as pla じ e and cylindrical shell ． But ， dロ e to the numerica 置 difficulty ， 【 here are very few fesearch for discre じ e spa し iai strし lctures ．The objective of this pape τ is to examine wav 巳 propaga 重三 〇n behav 正 ours of single layer la【tice domcs subjected 亡o the impac 匚 at 宜he center node ， In thefirst part， an analytical method bas 巳d Dn thc Fouri 巳r transform a皿 d a matrix method is presented ． In 山 esecond parら an impacted two dimensional lattice beam is analyzed i皿 order to estimate the validi 【 y ofthe analytical method ． 1n the lasI part ， nine types of siflglc layer lattice dDme are analyzed to examin 巳 the effect of member distribut 正 o 罵 densily ， member arrangement pa 臆ern and 血ow Io con ． nect thejoints ， e 電c ． ， upon the wave propaga 重ion behaviours ． KeywordS ：wavepropagatibn ， diScrete structUre ， Fourier transform， dynan ；ic snthess metho4 single layer lattice dome