Change search
ReferencesLink to record
Permanent link

Direct link
Modelling and simulation of simultaneous forming and quenching
Luleå tekniska universitet.
1999 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The objective of this thesis is to develop and evaluate numerical methods for modelling and simulation of simultaneous forming and quenching within an integrated product development environment. Simultaneous forming and quenching, also referred to as hot-stamping, is a manufacturing process for high strength automotive components such as side impact protection beams. A concept for integrated product and process development is proposed. The prototype system consists of a CAD system, a relational database management system, program interfaces, and nonlinear finite element programs. A thermal model based on explicit time integration is developed and implemented into the explicit finite element code DYNA3D to solve coupled thermomechanical problems. The implementation includes a linear-quadratic thermal shell element, and contact heat transfer. The material behaviour is described by a thermo-elastic-plastic material model. The effective-stress-function algorithm is used to update the stresses. The implemented methods are evaluated by comparison with corresponding experimental results. In one of the developed experiments, pre-heated steel plates are simultaneously formed and quenched by a cold tool. The analyses show good agreement during the initial stage, followed by an overestimation of the tool force at sequential times. It is shown that the computed tool force is very sensitive to the sequence of cooling in different parts of the plate.

Place, publisher, year, edition, pages
Luleå: Luleå tekniska universitet, 1999. , 23 p.
Doctoral thesis / Luleå University of Technology 1 jan 1997 → …, ISSN 1402-1544 ; 1999:28
Research subject
Computer Aided Design
URN: urn:nbn:se:ltu:diva-17099Local ID: 19db4d40-7652-11db-962b-000ea68e967bOAI: diva2:990095
Godkänd; 1999; 20061117 (haneit)Available from: 2016-09-29 Created: 2016-09-29Bibliographically approved

Open Access in DiVA

fulltext(43526 kB)0 downloads
File information
File name FULLTEXT01.pdfFile size 43526 kBChecksum SHA-512
Type fulltextMimetype application/pdf

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

ReferencesLink to record
Permanent link

Direct link