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为了改善办公设备送纸机构的设计 ,从根本上消除办公设备使用过程中常见的卡纸故障 ,采用非线性有限元方法对纸张的力学特性进行了研究 .基于修正的拉格朗日描述 ,系统推导了三角形平面壳单元用于几何非线性问题分析时的增量平衡方程 .在此基础上 ,分析了纸张在悬臂状态及自重作用下的横向静变形及无阻尼动态响应 .将研究分析结果与实验结果及国际商用有限元软件MARC的分析结果进行了比较 ,发现研究分析结果比MARK的分析结果更接近实验结果 ,证明对纸张静、动态力学特性的研究方法是非常有效的 ,研究结果能够为办公设备送纸机构的合理设计提供科学的依据 .
In order to improve the design of paper feeding mechanism of office equipment and fundamentally eliminate the jam of paper jam in the process of using office equipment, the paper studies the mechanical properties of paper by using the nonlinear finite element method.According to the modified Lagrangian description, the system The incremental balance equation of triangular planar shell elements for the analysis of geometric nonlinearity was derived. Based on this, the transverse static deformation and undamped dynamic response of the paper under cantilever and dead weight were analyzed. Experimental results and international commercial finite element software MARC analysis results were compared and found that the results of the research and analysis than the MARK results closer to the experimental results proved that the paper static and dynamic mechanical properties of the research method is very effective, Office equipment, paper feeding agencies to provide a reasonable basis for scientific design.