Dynamic response simulation and secondary development of impact load on underwater structures

In the research on the damage of underwater structures caused by impact loads generated by anchor dropping and explosion events, repetitive and extensive work is often involved. Especially when considering multiple influencing factors and multi-medium coupling, problems such as high professional theoretical requirements, cumbersome modeling processes, and long time consumption arise. Using the ABAQUS finite element simulation software as an analysis tool, a Python-based dynamic response analysis system for underwater pipelines was developed. The system standardizes the input process, automates modeling calculations, and outputs results, thereby reducing the workload of engineers and minimizing human errors. The accuracy of the automated analysis system was verified using experimental data, and its integrity and practical applicability were further validated through engineering examples. The results indicate that the system fulfills all designed functions, automates the entire process of dynamic response analysis, reduces the analytical difficulty for users, and provides a reference for the dynamic response analysis of underwater structures.