On the finite element prediction of damage growth and fracture initiation in finitely deforming ductile materials

This study is focused on the description of ductile fracture initiation, which is needed to predict product shapes in the blanking process. Two approaches are elaborated using a local ductile fracture model. According to literature, characterization of such a model should take place under loading conditions, comparable to the application. Therefore, the first approach incorporates the characterization of a ductile fracture model in a blanking experiment. The second approach is more favorable for industry. In this approach a tensile test is used to characterize the fracture model, instead of a complex and elaborate blanking experiment. Finite element simulations and blanking experiments are performed for five different clearances to validate both approaches. In conclusion it can be stated that for the investigated material, the first approach gives very good results within the experimental error. The second approach, the more favorable one for industry, yields results within 6 percent of the experiments over a wide, industrial range of clearances, when a newly proposed criterion is used. [S1087-1357(00)02202-4]

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Finite element prediction on the structural performance of profiled steel sheet dry board structural composite system proposed as a disaster relief shelter

Construction and Building Materials ◽

10.1016/j.conbuildmat.2004.07.019 ◽

2005 ◽

Vol 19 (4) ◽

pp. 285-295 ◽

Cited By ~ 5

Author(s):

Ehsan Ahmed ◽

Wan Hamidon Wan Badaruzzaman

Keyword(s):

Finite Element ◽

Steel Sheet ◽

Composite System ◽

Disaster Relief ◽

Structural Performance ◽

Structural Composite ◽

Finite Element Prediction

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Embankment on sludge: predicted and observed performances

Canadian Geotechnical Journal ◽

10.1139/t07-004 ◽

2007 ◽

Vol 44 (5) ◽

pp. 545-563 ◽

Cited By ~ 13

Author(s):

Tien H Wu ◽

Steven Z Zhou ◽

Stephan M Gale

Keyword(s):

Finite Element ◽

Water Treatment ◽

Input Data ◽

Bayesian Updating ◽

Full Scale ◽

The Finite Element Method ◽

Water Treatment Sludge ◽

History Of ◽

Finite Element Prediction ◽

Test Embankment

The case history of an embankment built over soft water-treatment sludge is presented. To assure that the sludge would consolidate and gain strength as predicted, a test embankment was built. The observed performance of the test embankment was compared with the predicted performance to verify and modify design assumptions. The results were used to design and construct the full-scale embankment. The finite element method and the critical state model were used to predict the performances of the test embankment and the full-scale embankment. Bayesian updating and system identification were used to update the material properties used in the prediction for the test embankment. The updated properties were then used to update the prediction for the test embankment and to predict the performance of the full-scale embankment. These predictions were compared with the observed performances to evaluate the accuracies of the predictions with different input data. Efforts were made to identify factors that cause differences between predicted and measured performances.Key words: Bayesian updating, consolidation, finite-element prediction, shear strength, stability, water-treatment sludge.

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