太阳能路灯灯杆、太阳能板支架和灯箱等结构复杂，在遭遇台风等强对流极端天气时由于其结构强度和刚度不足而发生失效情况时有发生，因此在设计阶段有必要对太阳能路灯进行相关的结构力学性能分析和研究。在完成深圳源创智能照明公司委托科研项目的基础上，本论文采用理论计算和有限元分析相结合的方法对某类太阳能路灯的结构力学性能进行了分析。完成的主要工作如下： （1）在计算LED灯具照明功率、太阳能电池板发电功率及锂电池电容量的基础上，确定了太阳能电池板类型和面积，以及锂电池的类型和重量； （2）在详细分析风力对各种结构力学性能影响的基础上，计算得到了作用于太阳能路灯上风压的大小，并以风压作为主要载荷校核了灯杆的强度和刚度； （3）在建立太阳能路灯整体结构有限元模型和关键部位子模型的基础上，对太阳能路灯整体结构和关键部位进行了应力应变分析，并将数值模拟结果与和理论计算结果进行了对比分析，结果表明，太阳能路灯的最大应力和最大挠度均在许用值范围之内，满足设计的要求； （4）采用有限元模态分析方法对I型和II型太阳能路灯灯杆进行了模态及固有频率分析，并利用欧拉-伯努利梁理论进行了验证，太阳能路灯灯杆的固有频率比风的激励频率要大，发生共振现象的概率较小。

The component of solar street lights, like light poles, solar panel supports, and light boxes are complex structures. In the case of typhoons and other strong convective extreme weather, failure always occurs due to lack of structural strength and stiffness.Therefore, it is necessary to analyze and study the mechanical properties of the solar street lights in at the design stage. On the basis of completing the research project commissioned by Socreat Electronics Technology Limited co. LTD, theoretical calculation and finite element analysis have been done to analyze the mechanical properties of a solar street light in this thesis. The main works are as follows: (1)On the basis of calculating the power of LED and solar panels, and calculating the capacity of the lithium battery, the type and area of the solar panel, as well as the type and weight of the lithium battery are determined; (2)Based on the detailed analysis of the influence of wind on the mechanical properties of various structures, the size of wind pressure acting on the solar street light is calculated, and strength and rigidity of the light pole are checked with that wind pressure as the main load; (3)On the basis of establishing the global models of solar street lights and sub-models around key positions, the stress and strain of whole structure and key positions are analyzed, and the numerical simulation results are compared with the theoretical calculation results. It shows that the maximum stress and maximum deflection of solar street lights are within the allowable value range which meet the requirements of design; (4)The modal and natural frequency analysis of type I and II solar street lamp poles are analyzed by finite element modal analysis and the Euler-Bernoulli beam theory is used to verify the analysis.It is found that the natural frequency of solar street lamp pole is higher than that of wind, so the probability of resonance is small.