Applied Mathematics and Mechanics (English Edition) ›› 2023, Vol. 44 ›› Issue (9): 1497-1510.doi: https://doi.org/10.1007/s10483-023-3032-6

• 论文 • 上一篇    下一篇

Exact simulation for direction-dependent large elastic strain responses of soft fibre-reinforced composites

Huifeng XI1, Guicheng ZHAO1, O. BRUHNS2, Siyu WANG1, Heng XIAO1   

  1. 1. School of Mechanics and Construction Engineering, MOE Key Lab of Disaster Forecast and Control in Engineering, Jinan University, Guangzhou 510632, China;
    2. Institute of Mechanics, Ruhr-University Bochum, Bochum D-44780, Germany
  • 收稿日期:2023-04-15 修回日期:2023-08-01 发布日期:2023-08-28
  • 通讯作者: Siyu WANG, E-mail: siyu0904@foxmail.com; Heng XIAO, E-mail: hxiao@jnu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Nos.12172151 and 12172149), the Research Project of Introducing High-level Foreign Experts from the Ministry of Sicence and Technology of China (No.G20221990122), and the Start-up Fund from Jinan University (Guangzhou) of China (No.88019062)

Exact simulation for direction-dependent large elastic strain responses of soft fibre-reinforced composites

Huifeng XI1, Guicheng ZHAO1, O. BRUHNS2, Siyu WANG1, Heng XIAO1   

  1. 1. School of Mechanics and Construction Engineering, MOE Key Lab of Disaster Forecast and Control in Engineering, Jinan University, Guangzhou 510632, China;
    2. Institute of Mechanics, Ruhr-University Bochum, Bochum D-44780, Germany
  • Received:2023-04-15 Revised:2023-08-01 Published:2023-08-28
  • Contact: Siyu WANG, E-mail: siyu0904@foxmail.com; Heng XIAO, E-mail: hxiao@jnu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Nos.12172151 and 12172149), the Research Project of Introducing High-level Foreign Experts from the Ministry of Sicence and Technology of China (No.G20221990122), and the Start-up Fund from Jinan University (Guangzhou) of China (No.88019062)

摘要: An explicit form of the elastic strain-energy function for direction-dependent large elastic strain behaviors of soft fiber-reinforced composites is first presented based upon a decoupled approach for simulating complex nonlinear coupling effects. From this form, the exact closed-form solutions are then obtained for the uniaxial tension responses in the fiber and cross-fiber directions. With such exact solutions, the issue of simultaneously simulating strongly coupling nonlinear responses in the fiber and cross-fiber directions may be reduced to the issue of separately treating each decoupled uniaxial stress-strain response, thus bypassing usual complexities and uncertainties involved in identifying a large number of strongly coupled adjustable parameters. The numerical examples given are in good agreement with the experimental data for large strain responses.

关键词: soft solid, fiber-reinforced composite, large elastic strain, transverse isotropy, strain-energy function, logarithmic strain, decoupling approach

Abstract: An explicit form of the elastic strain-energy function for direction-dependent large elastic strain behaviors of soft fiber-reinforced composites is first presented based upon a decoupled approach for simulating complex nonlinear coupling effects. From this form, the exact closed-form solutions are then obtained for the uniaxial tension responses in the fiber and cross-fiber directions. With such exact solutions, the issue of simultaneously simulating strongly coupling nonlinear responses in the fiber and cross-fiber directions may be reduced to the issue of separately treating each decoupled uniaxial stress-strain response, thus bypassing usual complexities and uncertainties involved in identifying a large number of strongly coupled adjustable parameters. The numerical examples given are in good agreement with the experimental data for large strain responses.

Key words: soft solid, fiber-reinforced composite, large elastic strain, transverse isotropy, strain-energy function, logarithmic strain, decoupling approach

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