机械

针对目前S型折叠悬臂梁受外载作用时在转弯处容易发生变形、失效等问题,采用有限元法对悬臂梁转弯处的受力进行分析,推导出悬臂梁在外载荷的作用下不同位置的应力值。通过S型折叠悬臂梁本身材料的屈服应力、安全系数等参数,推算出悬臂梁在转弯处的许用载荷及屈服载荷。利用ANSYS 19.0有限元分析软件对S型折叠悬臂梁进行静态仿真验证,并将仿真出的结果与理论分析的结果进行对比验证,进一步验证理论计算的正确性。结果表明,计算载荷与仿真载荷相差2.1%,在误差允许的范围之内,说明该计算方法在S型折叠悬臂梁应用中可行。

Aiming at solving the problem that S-shaped folding cantilever beam is prone to deformation and failure at the turn when subjected to external load, this paper uses the finite element method to analyze the force of the cantilever beam at the turning point and derive different positions of the cantilever beam under the external load stress value. The allowable load and yield load at the turning point are calculated through the yield stress and safety factor of the material of the S-shaped folding cantilever beam. The ANSYS 19.0 finite element analysis software was used to perform static simulation verification on the S-shaped folded cantilever beam, and the simulation results were compared with the theoretical analysis results to further verify the theoretical calculation. The results show that the difference between the calculated load and the simulated load is 2.1%, within the allowable range of error, which shows the feasibility of this calculation method in the application of S-shaped folding cantilever beam.