Simulation Analysis of a Cover System Based on a Parametric Modeling Approach

DOI: https://doi.org/10.62517/jes.202602231

Author(s)

Zhanhexiang Zhang1,2

Affiliation(s)

1713th Research Institute of China State Shipbuilding Corporation Limited, Zhengzhou, Henan, China 2Henan Key Laboratory of Underwater Intelligent Equipment, Zhengzhou, Henan, China

Abstract

The cover opening system is a key component of underwater equipment, its structural reliability is closely related to the stability and safety of the internal environment of underwater devices. During engineering design, finite element models often need to be modified repeatedly as geometric dimensions change. For a system with multiple components and complex contact relationships, such modifications usually require manual reconstruction of geometry, assembly constraints, interaction definitions and boundary conditions, which reduces modelling efficiency and increases the possibility of operational errors. To improve the efficiency of structural iteration, a Python-based parametric finite element modelling approach is developed for a cover system. According to the geometric characteristics and load-bearing paths of the cover, hinge, supports, and bolts, six key design parameters are defined and embedded into the modelling scripts. Secondary geometric features are automatically calculated through geometric relationships, enabling the model configuration to be updated consistently when input parameters are changed. Using the Abaqus scripting interface, the proposed approach realizes automatic part generation, assembly positioning, contact definition, dynamic pressure loading, boundary condition assignment, and finite element simulation. A physical model is used as a reference case to verify the applicability of the method. The simulated stress response fluctuates with the pressure load, with high-stress regions mainly concentrated at the cover plate lug transition area and the hinge–lever connection. The maximum hinge stress approaches the material yield strength, indicating a limited strength margin, whereas the base and bolts remain at relatively low stress levels. The proposed approach reduces repetitive modelling operations and provides an effective approach for the structural design and optimization of cover systems.

Keywords

Parametric Modeling; Finite Element Analysis; Abaqus; Python

References

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