考虑界面蠕变效应的层合壳结构的力学响应
PDF下载 (544)雷庭杰,严 蔚 *,吕田碧,职君静.考虑界面蠕变效应的层合壳结构的力学响应[J].宁波大学学报(理工版),2018,31(2):63-67.DOI:
LEI Ting-jie,YAN Wei *,L ü Tian-bi,ZHI Jun-jing.The mechanical responses of a laminated shell with consideration of interfacial creep effects[J].Journal of Ningbo University(Natural Science & Engineering Edition),2018,31(2):63-67.DOI:
| Title: | The mechanical responses of a laminated shell with consideration of interfacial creep effects |
| 作者: | 雷庭杰, 严 蔚 *, 吕田碧, 职君静 |
| Author(s): | LEI Ting-jie, YAN Wei *, L ü Tian-bi, ZHI Jun-jing |
| 关键词: | 有限元; 层合壳; 黏弹性界面; 力学响应 |
| Keywords: | finite element method; laminated shell; viscoelastic interfaces; mechanical responses |
| 分类号: | O343.2; TU312 |
| 文献标识码: | A |
| 摘要: | 采用三维有限元方法分析了考虑界面蠕变效应的斜交铺设层合壳结构的力学响应, 引入带阻尼弹簧单元模拟Kelvin-Voigt黏弹性界面. 与其他学者的解析解结果作对比研究, 验证了该有限元层合壳模型的有效性和准确性. 进一步研究表明, 由于层间界面的蠕变效应, 层合壳结构的力学响应随时间发生显著变化; 同时, 随着时间推移, 结构的承载力和整体刚度明显下降, 因此在将来的层合结构设计过程中应充分考虑弱界面的影响. |
| Abstract: | The three-dimensional finite element method is employed to investigate the mechanical responses of an angle-ply laminated shell by considering interfacial creep effects. A combined element including a dashpot and a spring is employed to simulate the Kelvin-Voigt viscoelastic interfacial relation. Comparison with existing analytical results by other researchers is conducted to validate the effectiveness and accuracy of the presented approach. The further study also shows that the mechanical behaviors of the laminated shell vary significantly according to the interfacial creep effects. In addition, the structural bearing capacity and the global stiffness decline evidently with time elapsing, which concludes that the imperfect interfaces should be considered carefully in the future laminate design. |
| 参考文献 /References: | [1] Chen W J, Chen J S, Cheng W B, et al. Status quo of research on impact damage of composites in aircraft[J]. Key Engineering Materials, 2016, 719:33-40. [2] Wu J, Yang X, Bai F. A micromechanical framework with aggregate-mastic interface effect for prediction uniaxial compression creep of asphalt mixture[J]. Acta Mechanica Solida Sinica, 2014, 27(3):306-314. [3] Liang Y, Lancaster F, Izzuddin B A. Effective modelling of structural glass with laminated shell elements[J]. Composite Structures, 2016, 156:47-62. [4] Li Z M. Large-amplitude vibration analysis of shear deformable laminated composite cylindrical shells with initial imperfections in thermal environments[J]. Journal of Engineering Mechanics, 2014, 140(3):552-565. [5] 职君静, 严蔚, 雷庭杰, 等. 长期荷载作用下含粘弹性界面层合板的力学行为[J]. 宁波大学学报(理工版), 2017, 30(1):77-81. [6] Ren J G. Exact solutions for laminated cylindrical shells in cylindrical bending[J]. Composites Science and Technology, 1987, 29:168-187. [7] Cai J B, Chen W Q, Ye G R. Effect of interlaminar bonding imperfections on the behavior of angle-ply laminated cylindrical panels[J]. Composites Science and Technology, 2004, 64:1753-1762. [8] Yan W, Ying J, Chen W Q. The behavior of angel-ply laminated cylindrical shells with viscoelastic interfaces in cylindrical bending[J]. Composite Structures, 2007, 78: 551-559. [9] Xiong H, Xi L U, Huang L. Simplified dynamic finite element analysis for three-dimensional pile-grouped-raft- high-rise buildings[J]. Key Engineering Materials, 2015 (400/402):613-619. [10] 张少实, 庄茁. 复合材料与粘弹性力学[M]. 北京: 机械工业出版社, 2005:1-188. |
| 备注/Memo: | 收稿日期: 2017－04－03. 宁波大学学报（理工版）网址: http://journallg.nbu.edu.cn/ 基金项目: 国家自然科学基金（51678310）. 第一作者: 雷庭杰（1991－）, 男, 河南驻马店人, 在读硕士研究生, 主要研究方向: 防灾减灾工程及防护工程. E-mail: leitingjiely@foxmail.com *通信作者: 严蔚（1968－）, 男, 浙江宁波人, 博士/教授, 主要研究方向: 智能材料与结构力学. E-mail: yanwei@nbu.edu.cn 宁波大学学报（理工版）网址：http://journallg.nbu.edu.cn/ |
