Ruochen Zheng
Research Subjects
Ruochen Zheng has a total of 17 co-authors. Here are the top co-authors by number of shared publications:
- Bastian Schäfer
Karlsruhe Institute of Technology (KIT)
5 shared publications - Luise Kärger
Karlsruhe Institute of Technology (KIT)
5 shared publications - Naim Naouar
Univ Lyon, INSA-Lyon, CNRS UMR5259, LaMCoS, F-69621, France
5 shared publications - Auriane Platzer
Univ Lyon, INSA-Lyon, CNRS UMR5259, LaMCoS, F-69621, France
3 shared publications - Julien Colmars
LaMCoS, INSA-Lyon, Villeurbanne, France
3 shared publications - Kourosh Sayar Dogahe2 shared publications
Latest Publications
- Open Access
- 6 August 2026
- Published by Elsevier in SSRN Electronic Journal
Finite element modeling and prediction of the structural response of stitching connections in high-performance technical textile webbing
Stitching is one of the most widely used techniques for joining fibrous textile structures in structural and functional applications. However, the stitched connection often remains the weakest part of the assembly, which makes a thorough understanding of its mechanical behavior essential for design and optimization. Whereas most existing numerical studies focus on stitched composites, the present work develops a macroscopic finite element framework specifically for predicting the structural performance of stitching connections in technical textile webbing, which enables computationally efficient simulations involving large numbers of stitches. The numerical model is validated against experimental tests, showing good agreement in predicting the maximum load for different stitching numbers. Although the homogenized model does not explicitly resolve the microscopic mechanisms, it successfully captures the reduction in overall connection efficiency due to uneven stress distribution within the stitched region. Furthermore, a comprehensive parametric analysis is conducted to investigate the influence of stitching density, stitching pattern, and stitching yarn type on connection performance. This study uncovers the governing mechanical relationships that control the performance of stitched textile connections, thereby providing critical insights for the design and optimization of high-performance stitched textile structures.
- 6 August 2026
- Published by Elsevier in SSRN Electronic Journal
Open AccessFinite element modeling and prediction of the structural response of stitching connections in high-performance technical textile webbing
Stitching is one of the most widely used techniques for joining fibrous textile structures in structural and functional applications. However, the stitched connection often remains the weakest part of the assembly, which makes a thorough understanding of its mechanical behavior essential for design and optimization. Whereas most existing numerical studies focus on stitched composites, the present work develops a macroscopic finite element framework specifically for predicting the structural performance of stitching connections in technical textile webbing, which enables computationally efficient simulations involving large numbers of stitches. The numerical model is validated against experimental tests, showing good agreement in predicting the maximum load for different stitching numbers. Although the homogenized model does not explicitly resolve the microscopic mechanisms, it successfully captures the reduction in overall connection efficiency due to uneven stress distribution within the stitched region. Furthermore, a comprehensive parametric analysis is conducted to investigate the influence of stitching density, stitching pattern, and stitching yarn type on connection performance. This study uncovers the governing mechanical relationships that control the performance of stitched textile connections, thereby providing critical insights for the design and optimization of high-performance stitched textile structures.
- Open Access
- 17 August 2024
- Published by Elsevier in Composites Part B: Engineering
- Vol. 287
Experimental analysis of the forming behavior of uni- and bidirectional non-crimp fabrics for different geometries
- 17 August 2024
- Published by Elsevier in Composites Part B: Engineering
- Vol. 287
Open AccessExperimental analysis of the forming behavior of uni- and bidirectional non-crimp fabrics for different geometries
- Open Access
- 9 July 2024
- Published by Elsevier in Composites Part A: Applied Science and Manufacturing
- Vol. 185
A hyperelastic approach for modeling the membrane behavior in finite element forming simulation of unidirectional non-crimp fabrics (UD-NCF)
- 9 July 2024
- Published by Elsevier in Composites Part A: Applied Science and Manufacturing
- Vol. 185
Open AccessA hyperelastic approach for modeling the membrane behavior in finite element forming simulation of unidirectional non-crimp fabrics (UD-NCF)
- Open Access
- 16 April 2024
- Published by Elsevier in Composite Structures
- Vol. 339
Mesoscopic finite element modeling of biaxial non-crimp fabric including representative stitch pattern
- 16 April 2024
- Published by Elsevier in Composite Structures
- Vol. 339
Open AccessMesoscopic finite element modeling of biaxial non-crimp fabric including representative stitch pattern
- Open Access
- 21 March 2024
- Published by Elsevier in International Journal of Mechanical Sciences
- Vol. 273
Influence of in-plane bending behaviour on textile composite reinforcement forming
- 21 March 2024
- Published by Elsevier in International Journal of Mechanical Sciences
- Vol. 273
Open AccessInfluence of in-plane bending behaviour on textile composite reinforcement forming
- Open Access
- 25 October 2023
- Published by Springer Nature in International Journal of Material Forming
- Vol. 16 (6) , 1-15
Membrane behavior of uni- and bidirectional non-crimp fabrics in off-axis-tension tests
The production of high-performance composite parts with non-crimp fabrics (NCFs) requires a profound understanding of the material’s behavior during draping to prevent forming defects such as wrinkling and gapping. Simulation methods can be used to model the complex material behavior of NCFs and predict their deformation during the draping process. However, NCFs do not intrinsically deform under pure shear like most woven fabrics, but often under superimposed shear, transverse tension and in-plane roving compaction. Therefore, non-standard characterization methods have to be applied besides typical picture frame tests or bias-extension tests. Off-axis-tension tests (OATs) utilize a simple setup to characterize a fabric’s membrane behavior under different ratios of superimposed shear, transverse tension and in-plane compaction. OATs at three different bias angles (30 $$^\circ $$ , 45 $$^\circ $$ and 60 $$^\circ $$ ) are conducted to investigate a unidirectional and a bidirectional NCF. A method is presented to measure the fiber curvatures in addition to the occurring strains. The investigations reveal a relatively symmetrical, shear-dominated behavior with limited roving slippage for the Biax-NCF. The behavior of the UD-NCF strongly depends on the stitching load during tests and is characterized by an asymmetric shear behavior as well as significant roving slippage. The off-axis-tension test results can be used as the basis for the development and validation of new simulation methods to model the complex membrane behavior of NCFs.- 25 October 2023
- Published by Springer Nature in International Journal of Material Forming
- Vol. 16 (6) , 1-15
Open AccessMembrane behavior of uni- and bidirectional non-crimp fabrics in off-axis-tension tests
The production of high-performance composite parts with non-crimp fabrics (NCFs) requires a profound understanding of the material’s behavior during draping to prevent forming defects such as wrinkling and gapping. Simulation methods can be used to model the complex material behavior of NCFs and predict their deformation during the draping process. However, NCFs do not intrinsically deform under pure shear like most woven fabrics, but often under superimposed shear, transverse tension and in-plane roving compaction. Therefore, non-standard characterization methods have to be applied besides typical picture frame tests or bias-extension tests. Off-axis-tension tests (OATs) utilize a simple setup to characterize a fabric’s membrane behavior under different ratios of superimposed shear, transverse tension and in-plane compaction. OATs at three different bias angles (30 $$^\circ $$ , 45 $$^\circ $$ and 60 $$^\circ $$ ) are conducted to investigate a unidirectional and a bidirectional NCF. A method is presented to measure the fiber curvatures in addition to the occurring strains. The investigations reveal a relatively symmetrical, shear-dominated behavior with limited roving slippage for the Biax-NCF. The behavior of the UD-NCF strongly depends on the stitching load during tests and is characterized by an asymmetric shear behavior as well as significant roving slippage. The off-axis-tension test results can be used as the basis for the development and validation of new simulation methods to model the complex membrane behavior of NCFs.