【摘要】 针对目前星表着陆器普遍存在的对着陆地形要求高及体量较大的问题，对一种三腿构型轻小型着陆装置进行了缓冲吸能机理和着陆过程稳定性的分析。该着陆器采用倒三角稳定架构，以限力杆作为缓冲吸能组件，利用金属塑性变形机制实现高效能量吸收。通过对限力杆能量吸收特性及着陆器翻倒临界条件的理论推导，确立了着陆器的设计准则。建立了该轻小型着陆装置虚拟样机，在ANSYS LS-DYNA环境下完成了多工况冲击动力学仿真分析，获得了该着陆器本体的过载响应特性及限力杆的应力-应变曲线。研究结果表明，该轻小型着陆装置具备良好的复杂地形适应能力和缓冲性能，可为我国未来深空探测任务提供一种具有潜力的设计方案。更多还原

【Abstract】 To address the common challenges of high terrain requirements and large mass associated with current surface landers, this study analyzes the energy absorption mechanism and landing stability of a compact, lightweight landing device with a triple-leg configuration. The lander employs an inverted-triangle stable structure, utilizing forcelimiting rods as the energy absorption component, which leverages the plastic deformation of metal for efficient energy dissipation. Through theoretical derivation of the energy absorption characteristics of the force-limiting rods and the critical overturning conditions of the lander, the design criteria were established. A virtual prototype of this lightweight landing device was developed, and multi-condition impact dynamics simulations were conducted using ANSYS LS-DYNA. The acceleration response characteristics of the lander body and the stress-strain curves of the force-limiting rods were obtained. The results demonstrate that this compact landing device exhibits excellent adaptability to complex terrains and effective cushioning performance, offering a promising design solution for China’s future deep space exploration missions.更多还原