| 引用本文: | 付志强,李芸,杜昱雯,康勇刚.纸浆模制波状结构缓冲性能的仿真影响因素[J].包装工程,2016,37(21):34-39. |
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| 纸浆模制波状结构缓冲性能的仿真影响因素 |
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付志强, 李芸, 杜昱雯, 康勇刚
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天津科技大学，天津 300222
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| 摘要: |
| 目的 对纸浆模制双向波状结构的静态压缩缓冲性能进行有限元仿真模拟，分析影响仿真结果的各种因素。方法 设计纸浆模制双向波状结构，制备样品并测试其缓冲性能；建立有限元模型并进行模型可靠性的验证，在此基础上分别讨论网格数目、摩擦因数、材料模型、弹性模量和泊松比的变化对仿真结果的影响。结果 网格数目的划分、泊松比、材料模型和弹性模量的变化对纸浆模制双向波状结构的仿真结果影响较大，摩擦因数的变化对仿真结果影响较小。结论 在进行有限元分析前应对模型进行网格无关性验证；材料模型应选取各向同性；静态压缩时载荷值会随着弹性模量和泊松比的增大而增大，呈现非线性增长模式。 |
| 关键词: 纸浆模制双向波状结构 缓冲性能 有限元方法 仿真精度 |
| DOI： |
| 分类号:TB485.1 |
| 基金项目: |
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| Influence Factors of Simulation on Testing the Cushioning Performance of Molded Pulps with Bi-wave Structure |
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FU Zhi-qiang, LI Yun, DU Yu-wen, KANG Yong-gang
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Tianjin University of Science and Technology, Tianjin 300222, China
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| Abstract: |
| The work aims to analyze various kinds of factors affecting simulation results through simulation of compression and cushioning performances of molded pulps with bi-wave structure in finite element method. Bi-wave structure of molded pulps was designed. The samples were prepared and the cushioning performance was tested. The finite element model was constructed and the model reliability was verified, based on which the effects of mesh quantity and the change in friction coefficient, material model, elasticity modulus and Poisson’s ratio on the simulation results were respectively discussed. The simulation results of bi-wave structure of molded pulps were greatly affected by the classification of mesh quantity and the change in Poisson’s ratio, material model and elasticity modulus, while such results were less affected by the change in friction coefficient. Before finite element analysis, test of irrelevant of mesh to the model should be conducted. The material model should be isotropic. The load during the static compression will increase with elasticity modulus and Poisson’s non-linearly. |
| Key words: molded pulps with bi-wave structure cushioning performance finite element method simulation accuracy |
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