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- W2612461214 abstract "This thesis focuses on scientific investigation to develop and enable a class of high strain ratesheet metal forming of aluminum alloys and advanced high strength steel (AHSS). These technologiesemploy a short duration pressure‐pulse to drive sheet metal into single‐sided dies, and can generally bedescribed as pulse pressure forming (PPF) processes. The work under this thesis has overcome threetechnical barriers to using PPF processing for more cost effective lightweight vehicles. The first technicalbarrier was the lack of understanding of the interrelationship between formability and measured strainrates that develop during PPF processing. The work under this thesis investigated the formability andfracture of sheet metals during PPF, and characterized the strain rate and the strain rate heterogeneity.The second technical barrier was the lack of a validated constitutive model for lightweight materialsduring PPF processing. The work under this thesis investigated the microstructure and mechanicalproperty evolution in metals during PPF. The third technical barrier was the lack of validated andpredictive formability models for PPF processes. The work under this thesis used the Marciniak andKuczynski method of formability prediction to predict the formability of both aluminum alloy AA5182and AHSS alloy DP600 across a wide range of strain rates and strain rate directions. The combination ofthese research results permits a more predictive capacity to design and develop PPF manufacturingprocesses for a desired automotive component made from aluminum alloys and AHSS." @default.
- W2612461214 created "2017-05-19" @default.
- W2612461214 creator A5087527420 @default.
- W2612461214 date "2012-05-21" @default.
- W2612461214 modified "2023-10-11" @default.
- W2612461214 title "Sheet Metal Forming and Failure during Biaxial Stretching at High Strain Rates" @default.
- W2612461214 hasPublicationYear "2012" @default.
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