Sheet forming analysis of woven FRT composites using the picture-frame shear test and the nonorthogonal constitutive equation
by Woong Ryeol Yu, Kwansoo Chung, Tae Jin Kang, Michael A. Zampaloni, Farhang Pourboghrat, Lu Liu, Julie Chen
International Journal of Materials and Product Technology (IJMPT), Vol. 21, No. 1/2/3, 2004

Abstract: This study investigates the validity of a nonorthogonal constitutive equation that has been developed for simulating the deformation behaviour of woven fabric thermoplastic (FRT) composites. The model incorporates shear material properties measured from picture-frame shear testing into the constitutive model. Two different types of single layer materials were investigated; a commingled woven fabric (preform) and a consolidated form of the preform. Picture-frame testing at elevated temperatures was conducted on the consolidated samples and experimental test data was used to determine the relationship between shear stress and shear strain. Experimental validation of the model was conducted utilising a stamp thermo-hydroforming press without the use of the counteracting fluid. To address an important issue in utilising picture-frame shear testing, a virtual test was performed with experimentally determined data in an implicit finite element solver. The stamping forming simulation was also performed by the constitutive equation with the shear material properties, showing good agreement with experimental results.

Online publication date: Wed, 07-Jul-2004

The full text of this article is only available to individual subscribers or to users at subscribing institutions.

 
Existing subscribers:
Go to Inderscience Online Journals to access the Full Text of this article.

Pay per view:
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.

Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Materials and Product Technology (IJMPT):
Login with your Inderscience username and password:

Username:        Password:          Forgotten your password?

Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.

If you still need assistance, please email subs@inderscience.com