安全驾驶室翻车保护结构的有限元分析

Simulation and analysis of roll-over protective structure of safety cabs

摘要: 车辆驾驶室在翻车时受到巨大的冲击载荷，其翻车保护结构应具有足够的侧向刚度来阻止其变形，同时又要能够吸收一定的能量。以某矿用自卸车翻车保护结构为例，采用弹塑性理论和有限元非线性分析方法，建立了翻车保护结构的非线性有限元模型，对模型进行侧向、竖向和纵向载荷的逐次加载分析，结果表明：翻车保护结构上横梁的端点已进入塑性变形状态，能量吸收达到国际标准规定的要求，翻车保护结构的构件未侵入变形限制量（DLV）。
- 驾驶室 /
- 翻车保护结构 /
- 加载试验 /
- 非线性
Abstract: The roll-over protective structures (ROPS) must have enough lateral rigidity to prevent deformation and assimilate a little energy when vehicle rolls over. The finite element model of a mining dump truck roller safety-cab ROPS was established using the elasticity and plasticity theories and the nonlinear finite element method. Lateral, vertical and longitudinal load forces were loaded to the model step-by-step. The results indicated that the end of top transverse beam ROPS had been the stage of plasticity mechanism deformation, then energy absorption had achieved the international requirement , and the ROPS structural component did not trespass into deflection-limiting volume (DLV).
- cab /
- ROPS /
- loading test /
- nonlinearity