Investigation of the Spring-In of a Pultruded L-Shaped Profile for Various Processing Conditions and Thicknesses

Ismet Baran, Jesper H. Hattel, Remko Akkerman

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

In this study, a thermo-mechanical finite element model is developed to predict the spring-in of an industrially pultruded L-shaped profile made of glass/polyester composite. The resin curing kinetics are obtained from the differential scanning calorimetry (DSC) experiments. The development of the resin modulus is derived using the dynamic mechanical analysis (DMA) tests and the effective mechanical properties of the processing composite are calculated using a micromechanical model. The temperature and degree of cure distributions are obtained in a three dimensional (3D) thermo-chemical anlaysis using the finite element method (FEM). The process induced distortions are then calculated using these distributions in a 2D quasi-static mechanical analysis in which generalized plane strain elements are utilized. The predicted spring-in pattern at the end of the process is found to agree quite well with the one observed for the real pultruded parts in a commercial pultrusion company. In addition, the effects of the pulling speed and the part thickness on the spring-in formations are investigated using the proposed numerical simulation tool. It is found that the magnitude of the spring-in increases with an increase in the pulling speed and part thickness.
Original languageEnglish
Title of host publication17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014
Place of PublicationEspoo, Finland
PublisherTrans Tech Publications Ltd
Pages273-279
DOIs
Publication statusPublished - 7 May 2014
EventESAFORM 2014: 17th International ESAFORM Conference on Material Forming - Espoo, Finland
Duration: 7 May 20149 May 2014
Conference number: 17

Publication series

Name
PublisherTrans Tech Publications Ltd
Volume611-612
ISSN (Print)1013-9826

Conference

ConferenceESAFORM 2014
Abbreviated titleESAFORM
CountryFinland
CityEspoo
Period7/05/149/05/14

Fingerprint

Resins
Pultrusion
Composite materials
Dynamic mechanical analysis
Processing
Curing
Polyesters
Differential scanning calorimetry
Finite element method
Glass
Mechanical properties
Kinetics
Computer simulation
Industry
Experiments
Temperature

Keywords

  • METIS-305570
  • IR-92122

Cite this

Baran, I., Hattel, J. H., & Akkerman, R. (2014). Investigation of the Spring-In of a Pultruded L-Shaped Profile for Various Processing Conditions and Thicknesses. In 17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014 (pp. 273-279). Espoo, Finland: Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/KEM.611-612.273
Baran, Ismet ; Hattel, Jesper H. ; Akkerman, Remko. / Investigation of the Spring-In of a Pultruded L-Shaped Profile for Various Processing Conditions and Thicknesses. 17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014. Espoo, Finland : Trans Tech Publications Ltd, 2014. pp. 273-279
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abstract = "In this study, a thermo-mechanical finite element model is developed to predict the spring-in of an industrially pultruded L-shaped profile made of glass/polyester composite. The resin curing kinetics are obtained from the differential scanning calorimetry (DSC) experiments. The development of the resin modulus is derived using the dynamic mechanical analysis (DMA) tests and the effective mechanical properties of the processing composite are calculated using a micromechanical model. The temperature and degree of cure distributions are obtained in a three dimensional (3D) thermo-chemical anlaysis using the finite element method (FEM). The process induced distortions are then calculated using these distributions in a 2D quasi-static mechanical analysis in which generalized plane strain elements are utilized. The predicted spring-in pattern at the end of the process is found to agree quite well with the one observed for the real pultruded parts in a commercial pultrusion company. In addition, the effects of the pulling speed and the part thickness on the spring-in formations are investigated using the proposed numerical simulation tool. It is found that the magnitude of the spring-in increases with an increase in the pulling speed and part thickness.",
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Baran, I, Hattel, JH & Akkerman, R 2014, Investigation of the Spring-In of a Pultruded L-Shaped Profile for Various Processing Conditions and Thicknesses. in 17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014. Trans Tech Publications Ltd, Espoo, Finland, pp. 273-279, ESAFORM 2014, Espoo, Finland, 7/05/14. https://doi.org/10.4028/www.scientific.net/KEM.611-612.273

Investigation of the Spring-In of a Pultruded L-Shaped Profile for Various Processing Conditions and Thicknesses. / Baran, Ismet; Hattel, Jesper H.; Akkerman, Remko.

17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014. Espoo, Finland : Trans Tech Publications Ltd, 2014. p. 273-279.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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N2 - In this study, a thermo-mechanical finite element model is developed to predict the spring-in of an industrially pultruded L-shaped profile made of glass/polyester composite. The resin curing kinetics are obtained from the differential scanning calorimetry (DSC) experiments. The development of the resin modulus is derived using the dynamic mechanical analysis (DMA) tests and the effective mechanical properties of the processing composite are calculated using a micromechanical model. The temperature and degree of cure distributions are obtained in a three dimensional (3D) thermo-chemical anlaysis using the finite element method (FEM). The process induced distortions are then calculated using these distributions in a 2D quasi-static mechanical analysis in which generalized plane strain elements are utilized. The predicted spring-in pattern at the end of the process is found to agree quite well with the one observed for the real pultruded parts in a commercial pultrusion company. In addition, the effects of the pulling speed and the part thickness on the spring-in formations are investigated using the proposed numerical simulation tool. It is found that the magnitude of the spring-in increases with an increase in the pulling speed and part thickness.

AB - In this study, a thermo-mechanical finite element model is developed to predict the spring-in of an industrially pultruded L-shaped profile made of glass/polyester composite. The resin curing kinetics are obtained from the differential scanning calorimetry (DSC) experiments. The development of the resin modulus is derived using the dynamic mechanical analysis (DMA) tests and the effective mechanical properties of the processing composite are calculated using a micromechanical model. The temperature and degree of cure distributions are obtained in a three dimensional (3D) thermo-chemical anlaysis using the finite element method (FEM). The process induced distortions are then calculated using these distributions in a 2D quasi-static mechanical analysis in which generalized plane strain elements are utilized. The predicted spring-in pattern at the end of the process is found to agree quite well with the one observed for the real pultruded parts in a commercial pultrusion company. In addition, the effects of the pulling speed and the part thickness on the spring-in formations are investigated using the proposed numerical simulation tool. It is found that the magnitude of the spring-in increases with an increase in the pulling speed and part thickness.

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Baran I, Hattel JH, Akkerman R. Investigation of the Spring-In of a Pultruded L-Shaped Profile for Various Processing Conditions and Thicknesses. In 17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014. Espoo, Finland: Trans Tech Publications Ltd. 2014. p. 273-279 https://doi.org/10.4028/www.scientific.net/KEM.611-612.273