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<p>As large-scale all-terrain cranes increasingly deploy in complex environments, wind-induced instability has emerged as a critical safety challenge in modern engineering applications. This study develops an advanced fluid-structure interaction framework integrating a solid-element boom model with atmospheric boundary layer simulations, overcoming the geometric simplification limitations of conventional beam-element approaches. A novel nonlinear buckling analysis method is proposed to address turbulent wind-structure coupling effects. The solid-element model exhibits a critical buckling load 206.18 % lower than beam-element approximations, demonstrating the imperative for geometric fidelity in stability assessment. Parametric studies identified optimal wind-structure configurations through angular sensitivity analysis, with 45° inflow angles exhibiting superior load distribution characteristics. Wind speed escalation tests established a nonlinear relationship between inflow velocity and structural stability, where elevation angle decreases gradually, the buckling load response becomes more severe. The developed fluid-structure interaction (FSI) framework enables more accurate prediction of aerodynamic instability modes, while the identified critical wind parameters inform safety factor optimization in crane design specifications. These results establish quantitative correlations between aerodynamic parameters and structural vulnerability, providing a paradigm shift from static to flow-condition-aware stability assessment in crane engineering.</p>

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Nonlinear buckling mechanisms of all-terrain crane booms under multidirectional wind loads: A fluid-structure interaction approach with geometric fidelity

  • 期刊论文

  • 发表日期：

    2026年5月11日

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  • Yue Yan,
  • Yixiao Qin

摘要

As large-scale all-terrain cranes increasingly deploy in complex environments, wind-induced instability has emerged as a critical safety challenge in modern engineering applications. This study develops an advanced fluid-structure interaction framework integrating a solid-element boom model with atmospheric boundary layer simulations, overcoming the geometric simplification limitations of conventional beam-element approaches. A novel nonlinear buckling analysis method is proposed to address turbulent wind-structure coupling effects. The solid-element model exhibits a critical buckling load 206.18 % lower than beam-element approximations, demonstrating the imperative for geometric fidelity in stability assessment. Parametric studies identified optimal wind-structure configurations through angular sensitivity analysis, with 45° inflow angles exhibiting superior load distribution characteristics. Wind speed escalation tests established a nonlinear relationship between inflow velocity and structural stability, where elevation angle decreases gradually, the buckling load response becomes more severe. The developed fluid-structure interaction (FSI) framework enables more accurate prediction of aerodynamic instability modes, while the identified critical wind parameters inform safety factor optimization in crane design specifications. These results establish quantitative correlations between aerodynamic parameters and structural vulnerability, providing a paradigm shift from static to flow-condition-aware stability assessment in crane engineering.