多参数协同优化下新型模块化节点的承载性能研究OA

This study investigates the optimization of load-bearing performance in novel aluminum alloy modular joints with a centrally reinforced annular structure through refined finite element modeling using ABAQUS.A systematic analysis is conducted to evaluate the coupled effects of key parameters,including modular unit thickness,annular reinforcement plate thickness,bottom stiffener thickness,and asymmetric bolt configurations.The results demonstrate that doubling the base plate thickness of modular units(relative to the top plate)combined with 10-mm-thick bottom stiffeners achieves an 11.98％improvement in ultimate load capacity and an 18.37％reduction in joint displacement.Parametric bolt configuration analysis reveals that an optimized asymmetric layout—adjusting bolt quantities in flange and web regions—effectively homogenizes stress distribution while eliminating construction redundancy.Load-displacement curves confirm the significant contribution of bottom stiffeners to stiffness nhancement,exhibiting complete envelopment of rigid unit responses and a pronounced increase in initial stiffness.Sensitivity analysis highlights a strong positive correlation between base plate thickness/stiffener thickness and load capacity gains,whereas excessive bolt deployment in the web region yields only marginal improvements(a 3.57％capacity increase),emphasizing the prioritization of critical component optimization.These findings provide theoretical and empirical foundations for the precise design of high-performance aluminum alloy modular joints.