Blast loading of offshore structural members using novel experimental techniques

摘要

Results from the first tests carried out on 0.5 m square, 1 mm thick mild steel plates using a new pulse pressure loading test facility are reported. The test facility is capable of generating uniform pressure pulses of different forms to simulate characteristic blast loading in a controlled manner. Static and dynamic pulse pressure tests were carried out on clamped plates which produced large inelastic deformations. The effect of in-plane restraint and edge displacements was investigated. The plates without in-plane restraint and consequently with the least membrane resistance exhibited distinct diagonal yield lines, half way from the corner to the centre of the plate, as well as yield lines along the edges. Further test results will be reported later.