Volume 31 Issue 05
May  2005
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Lu Zixing, Zhang Hui. Stress relaxation of open-cell foamed plastics[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(05): 552-555. (in Chinese)
Citation: Lu Zixing, Zhang Hui. Stress relaxation of open-cell foamed plastics[J]. Journal of Beijing University of Aeronautics and Astronautics, 2005, 31(05): 552-555. (in Chinese)

Stress relaxation of open-cell foamed plastics

  • Received Date: 03 Dec 2003
  • Publish Date: 31 May 2005
  • Open cell foamed plastics have better energy absorption characteristics and better cushioning properties so that they are extensively used in engineering areas. Thus, their visco-elastic behavior has attracted the most people attentions. Based on the Lederman model, the stress relaxation of open-cell foamedplastics was investigated by using the model of standard linear solid to consider the visco-elastic behavior of matrix. The effect of strain loading, structuralparameter and Poisson’s ratio on the stress relaxation curve of open-cell foamed plastics was discussed at the same time. The results show that the stress relaxation curves are not sensitive to Poisson’s ratio and the increase of strain loading or relative density will make the stress relaxation more significant. However, the ratio of initial and final value for stress response does not change with the increase of strain loading. All the above conclusions obtained are very important for overall understanding the mechanical behavior of open cell foamed plastics.

     

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  • [1] 卢子兴,王 仁,黄筑平,等. 泡沫塑料力学性能研究综述[J]. 力学进展,1996,26(3):306~323 Lu Zixing, Wang Ren, Huang Zhuping, et al. A review of studies on the mechanical properties of foam plastics [J]. Advances in Mechanics, 1996,26(3):306~323 (in Chinese) [2] Gent A N, Thomas A G. The deformation of foamed elastic materials[J]. J Appl Polym Sci,1959, 1(1):107~113 [3] Christensen R M. Mechanics of low density materials[J]. J Mech Phys Solids, 1986, 34(6):563~578 [4] Lederman J M. The prediction of the tensile properties of flexible foams[J]. J Appl Polym Sci,1971, 15:693~703 [5] 卢子兴,黄筑平,王 仁. 开孔泡沫塑料率相关的拉伸力学性能及本构关系[J]. 高分子学报,1997, 41(4):387~392 Lu Zixing, Huang Zhuping, Wang Ren. The strain-rate dependent constitutive relation and mechanical properties of open-cell foam plastics in tension[J]. Acta Polymerica Sinica, 1997, 41(4):387~392(in Chinese) [6] 周光泉,刘孝敏. 粘弹性理论[M]. 合肥:中国科学技术大学出版社,1996 Zhou Guangquan, Liu Xiaomin. Visco-elastic theory[M]. Hefei:CSTU Publishers, 1996 (in Chinese) [7] Ei-Ratal W H, Mallick P K. Elastic response of flexible polyurethane foams in uniaxial tension[J]. J Eng Mat Tech,1996, 118(2):157~161
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