Details
| Originalsprache | Englisch |
|---|---|
| Titel des Sammelwerks | Material Forming ESAFORM 2014 |
| Seiten | 391-398 |
| Seitenumfang | 8 |
| Publikationsstatus | Veröffentlicht - 23 Mai 2014 |
| Veranstaltung | 17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014 - Espoo, Finnland Dauer: 7 Mai 2014 → 9 Mai 2014 |
Publikationsreihe
| Name | Key Engineering Materials |
|---|---|
| Band | 611-612 |
| ISSN (Print) | 1013-9826 |
| ISSN (elektronisch) | 1662-9795 |
Abstract
In this paper a new variable forming tool concept and associated numerical methods for calculating optimal actuator layout and estimating CFRP part quality are presented. The concept of the tool features a modular design and active control of the forming process to achieve the desired geometry. Initially the laminate is placed on the flat top layer of the forming tool. There it is fixed and compacted using vacuum bagging. After compacting, it is heated up to increase the performance of the forming process using water based tempering of the forming tool's top layer. The heated laminate is then formed, pulling the tool's top layer into the desired geometry using the actuators. Finally, the formed laminate is cooled and transferred into a mold for curing. The position of the forming tool's actuators on the base plates is variable. Numerical optimization in combination with finite element (FE) technologies is utilized, to approximate the tool surface within given error margins, with as few actuators as possible. In addition, results of a numerical method for part quality estimation are shown. The influence of the forming process on mechanical properties due to fiber waviness is taking into account using a self-developed method that includes manufacturing characteristics in FE modeling of the part. The method is based on mathematical descriptions of fiber waviness, which are implemented into a FE model. Therefore a structure discretization assuming perfect fiber orientations is realized and the expected fiber waviness induced by the forming process is applied element-wise..
ASJC Scopus Sachgebiete
- Werkstoffwissenschaften (insg.)
- Allgemeine Materialwissenschaften
- Ingenieurwesen (insg.)
- Werkstoffmechanik
- Ingenieurwesen (insg.)
- Maschinenbau
Zitieren
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- Harvard
- Apa
- Vancouver
- BibTex
- RIS
Material Forming ESAFORM 2014. 2014. S. 391-398 (Key Engineering Materials; Band 611-612).
Publikation: Beitrag in Buch/Bericht/Sammelwerk/Konferenzband › Aufsatz in Konferenzband › Forschung › Peer-Review
}
TY - GEN
T1 - Variable forming tool and process for thermoset prepregs with simulation verified part quality
AU - Hundt, T.
AU - Schmidt, C.
AU - Denkena, B.
AU - Engel, K.
AU - Horst, P.
N1 - Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2014/5/23
Y1 - 2014/5/23
N2 - In this paper a new variable forming tool concept and associated numerical methods for calculating optimal actuator layout and estimating CFRP part quality are presented. The concept of the tool features a modular design and active control of the forming process to achieve the desired geometry. Initially the laminate is placed on the flat top layer of the forming tool. There it is fixed and compacted using vacuum bagging. After compacting, it is heated up to increase the performance of the forming process using water based tempering of the forming tool's top layer. The heated laminate is then formed, pulling the tool's top layer into the desired geometry using the actuators. Finally, the formed laminate is cooled and transferred into a mold for curing. The position of the forming tool's actuators on the base plates is variable. Numerical optimization in combination with finite element (FE) technologies is utilized, to approximate the tool surface within given error margins, with as few actuators as possible. In addition, results of a numerical method for part quality estimation are shown. The influence of the forming process on mechanical properties due to fiber waviness is taking into account using a self-developed method that includes manufacturing characteristics in FE modeling of the part. The method is based on mathematical descriptions of fiber waviness, which are implemented into a FE model. Therefore a structure discretization assuming perfect fiber orientations is realized and the expected fiber waviness induced by the forming process is applied element-wise..
AB - In this paper a new variable forming tool concept and associated numerical methods for calculating optimal actuator layout and estimating CFRP part quality are presented. The concept of the tool features a modular design and active control of the forming process to achieve the desired geometry. Initially the laminate is placed on the flat top layer of the forming tool. There it is fixed and compacted using vacuum bagging. After compacting, it is heated up to increase the performance of the forming process using water based tempering of the forming tool's top layer. The heated laminate is then formed, pulling the tool's top layer into the desired geometry using the actuators. Finally, the formed laminate is cooled and transferred into a mold for curing. The position of the forming tool's actuators on the base plates is variable. Numerical optimization in combination with finite element (FE) technologies is utilized, to approximate the tool surface within given error margins, with as few actuators as possible. In addition, results of a numerical method for part quality estimation are shown. The influence of the forming process on mechanical properties due to fiber waviness is taking into account using a self-developed method that includes manufacturing characteristics in FE modeling of the part. The method is based on mathematical descriptions of fiber waviness, which are implemented into a FE model. Therefore a structure discretization assuming perfect fiber orientations is realized and the expected fiber waviness induced by the forming process is applied element-wise..
KW - Forming
KW - Part quality
KW - Prepreg
KW - Thermoset
KW - Tooling
UR - http://www.scopus.com/inward/record.url?scp=84902596874&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/kem.611-612.391
DO - 10.4028/www.scientific.net/kem.611-612.391
M3 - Conference contribution
AN - SCOPUS:84902596874
SN - 9783038351061
T3 - Key Engineering Materials
SP - 391
EP - 398
BT - Material Forming ESAFORM 2014
T2 - 17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014
Y2 - 7 May 2014 through 9 May 2014
ER -