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Knowledge how structure behave under explosion loads is critical for people and environmental safety. Loads related to explosion like blast pressure wave, pressure impulse, flying objects, thermal action are modelled in CAE software and applied to discrete model of analysed structure. Structure subjected to blast loads like frames, doors, windows may have few failure scenarios: loss of stability, material fracture and defragmentation which, all can be predicted via FEA blast analysis.
Structures located in explosion risk areas like oil platforms have to meet specific design requirements according to Accidental Limit State design method to ensure adequate structural safety level and resistance under blast wave pressure. Utilization of Finite Element Analysis (FEA) in design process of blast resistant structures leads to material savings, shorter design cycle and cost effective products.
The structural design criteria for Accidental Limit State depends on type of accident event, usually during or after accident event structure may experience a certain level of damage (not to do so would result in an uneconomical structure) however the main safety functions of the structure should not be compromised.
We support design of blast resistant doors via FEA simulations to ensure compliance with standards like ISO/FDIS 16933 and client requirements. The dynamic nature of the blast load is accurately predicted in FEA explicit analysis as well interaction with frame, walls and hinges. Data from FEA simulations like level of door deformation, stresses, location of week points in different time points are priceless for design engineers. Utilization of FEA in design process of blast resistant doors leads to material savings and shorter design cycle.