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Overload analysis and J_e-based fatigue life prediction of spot-welded auto seat belt anchors

Lee, Hyungil / Choi, Jinyong

We demonstrate the validity of F_e, which comprehensively describes the effects of specimen geometry and loading type, in predicting the fatigue life of auto seat belt anchor panel. We first simplify the heat-affected zone model to reduce the number of finite elements. We then establish finite-element models reflecting the actual overload behaviour of three types of seat belt anchor specimens. Using elaborate finite-element models, we obtain the effective crack-driving parameter F_e composed of its ductility-dependent modal components. It is confirmed that the F_e concept successfully predicts the fatigue life of multi-spot-welded panel structures represented by auto seat belt anchors here.

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Overload analysis and J_e-based fatigue life prediction of spot-welded auto seat belt anchors

Lee, Hyungil / Choi, Jinyong

We demonstrate the validity of F_e, which comprehensively describes the effects of specimen geometry and loading type, in predicting the fatigue life of auto seat belt anchor panel. We first simplify the heat-affected zone model to reduce the number of finite elements. We then establish finite-element models reflecting the actual overload behaviour of three types of seat belt anchor specimens. Using elaborate finite-element models, we obtain the effective crack-driving parameter F_e composed of its ductility-dependent modal components. It is confirmed that the F_e concept successfully predicts the fatigue life of multi-spot-welded panel structures represented by auto seat belt anchors here.

Overload analysis and J_e-based fatigue life prediction of spot-welded auto seat belt anchors

Lee, Hyungil / Choi, Jinyong

We demonstrate the validity of F_e, which comprehensively describes the effects of specimen geometry and loading type, in predicting the fatigue life of auto seat belt anchor panel. We first simplify the heat-affected zone model to reduce the number of finite elements. We then establish finite-element models reflecting the actual overload behaviour of three types of seat belt anchor specimens. Using elaborate finite-element models, we obtain the effective crack-driving parameter F_e composed of its ductility-dependent modal components. It is confirmed that the F_e concept successfully predicts the fatigue life of multi-spot-welded panel structures represented by auto seat belt anchors here.

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Title:

Overload analysis and J_e-based fatigue life prediction of spot-welded auto seat belt anchors

Contributors:

Lee, Hyungil (author) / Choi, Jinyong (author)

Published in:

Fatigue and Fracture of Engineering Materials and Structures ; 27 ; 245-251

Publication date:

2004

Size:

7 Seiten, 14 Quellen

ISSN:

DOI:

https://doi.org/10.1111/j.1460-2695.2004.00752.x

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Materialermüdung , Punktschweißen , Wärmeeinflusszone , mathematisches Modell , Finite-Elemente-Methode , Duktilität , Elastizitätsmodul , Poisson-Zahl , Vektor , Spannungsintensitätsfaktor , Sicherheitsgurt , Anker (Verbindungselement) , Platte (Bauteil) , Überlastbarkeit , Überlastung

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