有效接触面积刚性连接的结合部建模方法研究

发布时间：2018-06-24 09:36

本文选题：结合部 + 刚性连接　；参考：《振动工程学报》2017年03期

【摘要】：为了解决结合部仿真建模的问题,依据赫兹接触理论和G-W模型推导出连接零件结合部的有效接触面积计算公式,对结合部的有效接触面积内有限元单元节点刚性连接的建模方法进行了研究。以某印制板夹具为例,按照所提方法得到了结合部的有效接触面积,运用Patran软件中MPC命令建立了螺钉连接件有效接触面积的有限元单元节点刚性连接的模型。通过比较印制板夹具实测模态和计算模态的非平动前四阶模态频率及计算模态保证判据(MAC)值,表明所建有限元模型是合理的、符合实际的,从而证明了有效接触面积刚性连接建模方法的正确性,可以为其他产品的结合部仿真建模提供参考和借鉴。
[Abstract]:In order to solve the problem of joint simulation modeling, the effective contact area calculation formula of joint part is derived according to Hertz contact theory and G-W model. The modeling method of the rigid connection of finite element nodes in the effective contact area of the joint is studied in this paper. Taking a PCB fixture as an example, the effective contact area of the joint is obtained according to the proposed method. The finite element rigid connection model of the effective contact area of screw joint is established by using the MPC command of Patran software. By comparing the measured mode and the calculated mode of the PCB fixture with the non-translational first-order modal frequency and the calculated modal assurance criterion (MAC), it is shown that the finite element model is reasonable and in line with the actual situation. It is proved that the effective contact area rigid connection modeling method is correct and can be used for reference for the simulation modeling of other products.
【作者单位】：浙江科技学院创新创业学院;浙江理工大学浙江省机电产品可靠性技术研究重点实验室;南京航空航天大学机械结构力学及控制国家重点实验室;
【基金】：国家自然科学基金资助项目(51275480) 浙江省重点科技创新团队资助项目(2010R50005)
【分类号】：TH11

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