基于LS-DYNA的弹性结构清雪铲缓冲性能仿真及试验OA

To address the issues of low snow removal efficiency and significant ground damage caused by conventional snowplows,an elastic structural design is implemented for the snow removal blade.Through theoretical analysis of the torsion spring's rotational angle under varying torque conditions,it is determined that the spring's rotation angle during snow removal operations is only 2.46°.This minimal rotation ensures the torsion spring can effectively support the blade while providing the necessary cushioning and shock absorption functions.Based on the LS-DYNA dynamics algorithm,the dynamic behavior of the snow shovel is simulated.By simulating the collision between the shovel and obstacles,the morphology of the torsion spring,the shear stress,and the equivalent stress during torsion spring failure are analyzed.The effective buffer range of the torsion spring components is determined to be 0～426 MPa.Verification tests demonstrate that the equivalent stress of the torsion spring reaches 437 MPa at a deformation of 50 mm,and the relative error compared to the cushioning performance simulation results is 2.5%,which confirms the accuracy of the effective buffer range of the torsion spring.