Design and Analysis of Gooseneck Multi-Axle Trailer

This is a **40-foot gooseneck semi-trailer** capable of transporting 40-ton containers over long haul distances. The design process involves comprehensive structural analysis, including static, torsional, and dynamic simulations to ensure durability and stability under heavy loading. Material selection is optimized using Ashby plots to balance strength, weight, and fatigue resistance. The trailer was engineered to withstand off-road conditions, with special focus on torsional rigidity, impact resistance, and frame flexibility to handle uneven terrain. The final design achieves high load-bearing capacity while maintaining structural efficiency and long-term performance. The 3D modeling is accomplished in SolidWorks and SPACECLAIM. The FEA analysis is conducted in ANSYS Mechanical and LS-DYNA.