A forward modeling method of assembly interface contact characteristics based on user-defined elements
A forward modeling method of assembly interface contact characteristics based on user-defined elements
复制标题
一种基于用户定义单元的装配界面接触特性正向建模方法
DOI：
10.1177/09544062221083440
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发表时间：
2022-04
期刊：
影响因子：
--
通讯作者：
Xiaokai Mu
中科院分区：
文献类型：
--
作者：
Chao Zhang;Qingchao Sun;Wei Sun;Bo Yuan;Xiaokai Mu
装配界面模型的前向构造是高性能数字化装配模型建立的基础。针对动态反算方法难以精确求解界面薄层单元参数的问题，提出了一种基于多尺度形态学模拟的薄层单元参数建模方法。首先，用户定义元素（UEL）的发展，其属性参数在空间上连续分布。将宏观界面接触压力和微观形貌相结合，实现了界面接触刚度的高效、准确表征。在宏观尺度上，基于有限元理论提取了装配表面的压力分布特征。在微观尺度上，基于分形和赫兹接触理论，建立了薄层材料特性与表面形貌之间的映射关系。进而建立了薄层单元弹性模量与接触刚度之间的映射关系，实现了界面接触特性的正向表征。根据UEL和薄层理论建立了装配界面的等效模型。最后，动态实验结果与仿真结果吻合较好，验证了所提建模方法的有效性。该研究为装配界面接触特性的正演建模提供了基础。
The forward construction of the assembly interface model plays a fundamental role in the high-performance digital assembly model building. Aiming at the problem that it is difficult to accurately solve the interface thin-layer element parameters with dynamic inverse calculation method, a thin-layer element parameter modeling method based on multiscale morphology simulation is proposed. First, the user-defined elements (UEL) are developed, and its attribute parameters are continuously distributed in space. Then, the combination of macroscopic interface contact pressure and microscopic morphology realizes the efficient and accurate characterization of interface contact stiffness. On the macro scale, the pressure distribution characteristics of the assembly surface are extracted based on finite element theory. On the micro scale, the mapping relationship between the material properties of the thin-layer and the surface morphology is established based on fractal and Hertzian contact theory. Furthermore, the mapping relationship between the elastic modulus of the thin-layer element and the contact stiffness is established, which realizes the forward characterization of the interface contact characteristics. The equivalent model of the assembly interface is built according to the UEL and thin-layer theory. Finally, the dynamic experimental results are in good agreement with the simulation results, which verifies the effectiveness of the proposed modeling method. This study provides a basis for the forward modeling of assembly interface contact characteristics.
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影响因子：
5
作者：
MAJUMDAR, A;TIEN, CL
通讯作者：
TIEN, CL
影响因子：
5
作者：
Kim, Jeong;Yoon, Joo-Cheol;Kang, Beom-Soo
通讯作者：
Kang, Beom-Soo
DOI：
--
发表时间：
2012
期刊：
Machinery Design and Manufacture
影响因子：
--
作者：
Jin Jian-xin
通讯作者：
Jin Jian-xin
影响因子：
5.6
作者：
Yongsheng Zhao;Hongchao Wu;Zhifeng Liu;Qiang Cheng;Cong-bin Yang
通讯作者：
Yongsheng Zhao;Hongchao Wu;Zhifeng Liu;Qiang Cheng;Cong-bin Yang
影响因子：
--
作者：
Xueliang Zhang
通讯作者：
Xueliang Zhang