Response of Vertical Wall Structures under Blast Loading by Dynamic Analysis

AbstractThis paper studies the dynamic response of vertical wall structures under blast loading. Blast loading is simulated by the form of dynamic excitation in time based on some assumptions to assure physical nature of dynamic problems. The vertical wall structure is modelled by plates restrained in an edge and fixed in four edges is surveyed both linear and nonlinear response under explosion. The nonlinear dynamic analysis is considered with cracked behavior of the plate. The governing equation of motion of the structure is established by Finite Element Method with quadrilateral 4 nodes elements and integrated by constant acceleration method of Newmark's family. BLASTSHELL program which analyzed the behavior of shell under blast loading is built on MATLAB software. The numerical results show that the effect of damping ratio, location and pressure of blast loading is sensitive to response of the wall structure. Conclusions have practical applications in design of protective buildings in both civil and defense areas