|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Shape Casting: 6th International Symposium
||Modeling of Distortion of a Steel Bracket Sand Casting
||Daniel Galles, Christoph Beckermann
|On-Site Speaker (Planned)
Modeling the thermo-mechanical behavior of bonded sand is essential for predicting casting distortions. In this study, steel casting experiments involving a U shaped bracket are performed to investigate the effect of core restraint. The gap opening between the bracket legs is measured in-situ using LVDTs (Linear Variable Differential Transformers) that are attached to quartz rods embedded into the bottom of each leg. During cooling, the core restrains the thermal contractions of the steel and pushes the legs outward, generating distortions. To simulate the experiments, calculated transient temperature fields are input into a finite element stress analysis code. The steel is modeled using an elasto-visco-plastic constitutive law, while the core employs the Drucker Prager Cap model. After adjustments to the high-temperature core sand properties, the observed distortions are accurately predicted.
||Planned: A print-only volume