The invention relates to a chassis frame structure bending rigidity modeling method. The chassis frame structure bending rigidity modeling method comprises the steps that geometric treatment is conducted on the bolted connection position of a frame and a cross beam; performing grid division on the frame metal plate structure by adopting units S4 and S3; a Rigid unit is adopted to connect a frame structure, and the Rigid unit comprises a bolt, a front supporting point and a rear supporting point; establishing and endowing a frame material and section attributes; applying a vertical load on the upper wing surface of the frame longitudinal beam at the middle point of the front supporting point and the rear supporting point; aBAQUS software is submitted for calculation, whether frame deformation is correct or not is checked, and the vertical displacement of the lower wing face of the longitudinal beam of the frame is read. According to the chassis frame structure bending rigidity modeling method, after the Hypermesh software is used for importing the geometric model of the frame structure and the mid-planes are extracted from the cross beams and the longitudinal beams of the frame, the frame bending rigidity can be accurately modeled and calculated, and the problems that the calculation precision of the frame bending rigidity is insufficient and the actual deviation is large are solved.
本发明涉及一种底盘车架结构弯曲刚度建模方法,包括对车架与横梁螺栓连接位置进行几何处理;对车架钣金结构采用S4和S3单元进行网格划分;采用Rigid单元对车架结构进行连接,包括螺栓及前、后支撑点;建立并赋予车架材料及截面属性;在前、后支撑点中点,在车架纵梁上翼面上施加垂向载荷;提交ABAQUS软件计算,检查车架变形是否正确,读取车架纵梁下翼面垂向位移。本发明底盘车架结构弯曲刚度建模方法,利用Hypermesh软件导入车架结构几何模型并对车架横梁及纵梁抽取中面后,可精确的对车架弯曲刚度建模计算,解决了车架弯曲刚度计算精度不足及与实际偏差大的问题。
Chassis frame structure bending rigidity modeling method
一种底盘车架结构弯曲刚度建模方法
2023-01-06
Patent
Electronic Resource
Chinese