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Special-Purpose Programmed Computer For Numerical Simulation Of A Metal Forming Process Having A Predefined Load Path With Corresponding Mesh Adjustment Scheme
Special-Purpose Programmed Computer For Numerical Simulation Of A Metal Forming Process Having A Predefined Load Path With Corresponding Mesh Adjustment Scheme
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机译:具有预定载荷路径和相应网格调整方案的金属成型过程数值模拟的专用程序计算机
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摘要
Numerically-simulated physical behaviors of workpiece sheet metal during a metal forming process having a predefined load path is obtained based on received FEA mesh model and mesh adjustment criteria as follows: initializing current simulation time; determining current simulation period from current simulation time and next mesh adjustment time; using characteristic length to establish a 3-D mesh refinement zone that contains a space encompassing a corresponding section of the predefined load path for the current simulation period; updating the FEA mesh model by refining those finite elements located within the 3-D mesh refinement zone to a desired level and by coarsening certain finite elements outside of the zone according to mesh coarsening criterion; conducting corresponding portion of the time-marching simulation using the updated FEA mesh model for current simulation period until current simulation time reaches next mesh adjustment time; and repeating until current simulation time passes the total simulation time period.
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