Research on Bolt Preload Simulation Based on Virtual Material Method
Research on Bolt Preload Simulation Based on Virtual Material Method
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发表时间：
2012
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通讯作者：
Jin Jian-xin
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作者：
Jin Jian-xin
螺栓预紧力是影响固定接头界面力学特性的最重要因素之一,在对螺栓连接的装配体进行高精度有限元分析时,应考虑螺栓预紧力。模态分析中采用虚拟材料方法对螺栓预紧力进行模拟。首先根据固定接头界面的参数计算各螺栓预紧力的虚拟材料参数,然后在有限元软件中建立虚拟材料单元的有限元模型,得到板件的固有频率和振型。结果与实验结果一致,表明虚拟材料法模拟螺栓预紧力的有效性,为装配体的有限元分析提供了一种途径。
The bolt preload is one of the most important factors which affect the mechanical characteristics of fixed joint interface,in high precision FEM analysis for the assembly connected by bolts,the bolt preload should be considered.Virtual material method is adopted to simulate the bolt preload in modal analysis.At first the virtual material's parameters of each bolt preload are calculated according to the parameters of fixed joint interface,then the finite element model with virtual material element is created in FEM software,and the natural frequency and mode shape of the plates are got.The simulation results are consistent with the experimental ones,which show that the virtual material method to simulate bolt preload is effective,which provides a way for the FEM analysis of the assembly.