PENETRATING BY CONCRETE-COMPUTER: MODEL CALIBRATION METHODOLOGIES
Concrete is a material that is employed extensively in the construction of infrastructure. Prediction of its behaviour when subjected to dynamic loads and impacts is crucial to assess both protection and defeat. The use of numerical simulations for this purpose is well established. Their ability to reproduce experiment is dependent on their physical realism and interactions of the equation of state, constitutive, damage and failure models. Inevitably this requires the introduction of fitting parameters calibrated against experiment. In the case of Lagrange numerical schemes, modelling penetration scenarios, cell deletion/erosion follows material failure and the fitting parameter is the erosion strain. For scenarios with pre-formed boreholes, however, it is not clear whether erosion strain alone is sufficiently accurate. This paper describes the technical methodology, to calibrate a contact friction coefficient and erosion strain. The results illustrate the importance of these parameters in being able to predict penetrator performance.
William Huntington-Thresher Mark Reynolds Ian Cullis
QinetiQ plc Fort Halstead Sevenoaks Kent, TN14 7BP United Kingdom
国际会议
25th International Symposium on Ballistics(第25届国际弹道会议)
北京
英文
1331-1338
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）