Therefore the use of numerical simulation methods is highly required. The investigation of the mechanisms, involved in the weld zone, by experimental means is a very difficult task.

The thermo-mechanisms taking place during welding are very complex and still not thoroughly elucidated. The cost of these files is Twenty-Six Euros.Friction Stir Spot Welding (FSSW) is a highly complex joining process, coupling multiple physical phenomena. You can provide CAE ,INP,and English video files of this simulation here. You can see some figures of the results at below To define air property ideal gas data,TNT JWL data,water Us-Up parameter and for aluminum tube Johnson-Cook plasticity data has been used.Īfter detonation, the shock wave propagated into the water and the pipe has a large deformation and compaction after the contact with shock waves. General contact with default property has been selected. Taylor was among the first to study the momentum transferred to a freestanding plate from a pressure wave with an exponential profile.Dynamic explicit procedure is appropriate for this type of analysis. In recent years, there has been considerable interest in evaluating the role of the fluid-structure interaction (FSI) in the blast response of a structure. However, the bubble pulse can cause global damage to a ship following an explosion, resulting in a whipping motion if the frequency approaches the eigenfrequency of the ship. The shock wave causes great damage to a structure whose natural period is of the order of milliseconds and, therefore, usually causes only local damage to a ship. Therefore, both the shock wave and the bubble pulse should be considered when examining a near-field underwater explosion.You can see a figure of assembled part at below On the other hand, the pressure caused by the bubble pulse is lower (only 10%–۲۰% that of the shock wave) but is of a much longer duration, resulting in a force of comparable momentum. Generally, the pressure caused by the shock wave is very high but the duration is very short. Although both inflict severe damage to the adjacent structure, their damage mechanisms are different. In this tutorial numerical simulation of CEL explosion over metal tube in the depth of water in Abaqus has been investigated.An underwater explosion can be divided into two stages: the shock wave and the bubble pulse.

Abaqus cel fsi