Скачать или смотреть GDIID 2025 | ID 5010 Title: MODELLING TAPERED THICKNESS HAT-SECTION TUBES USING SOLID-SHELL

Project ID: 5010
Title: MODELLING TAPERED THICKNESS HAT-SECTION TUBES USING SOLID-SHELL ELEMENT COUPLING
Category IID: Science & Technology

Hat-section tubes are widely utilized in engineering applications due to their lightweight properties and excellent energy absorption capabilities. Under bending loads, conventional tubes often experience collapse at the mid-section, where bending moments and stresses are highest. This project focuses on developing Finite Element Models (FEMs) of hat-section tubes with tapered wall thickness to improve their flexural rigidity, employing a solid-shell element coupling approach. Simulations and analyses were conducted using the Finite Element (FE) software ABAQUS. The FE models were validated through a remodelling-based validation process, utilizing a similar, previously validated structure as a reference. The hinge region, comprising approximately 25% of the tube, was modelled using continuum elements with tapered thickness, while the remaining undeformed areas were represented by shell elements. Parametric studies were then performed to investigate the influence of key variables such as thickness, web width, indenter size, loading angle, support type, and support length on Specific Energy Absorption (SEA). A full factorial design of experiments with three levels was employed to systematically conduct computational experiments. The results demonstrate that hat-section tubes with variable thickness exhibit significantly enhanced SEA compared to traditional uniform-thickness tubes.