critical mechanical properties and fea simulation for crashworthiness assessment of a coarse-grained cast am50 alloy参考文献.pdf

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remains constant over the range of stress triaxiality investigated. Because
the two different specimen geometries give rise to different Lode angle values, the test results show that the Lode angle parameter is an important
parameter for deformation and fracture of Mg alloys. Finite element simulations of loading of the cylindrical notched-tension and Charpy
specimens were carried out using a Lode-angle dependent von Mises model, and were found to provide a reasonable description of the
load–displacement curves measured in the tests. For the flat-grooved plane strain specimens, the computations under-predicted the force–
displacement response measured.
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Keywords: Effect of strain rate and temperature; Tensile and compressive; Crash; Simulation; AM50
1. Introduction typical cast Mg alloys for automotive applications are produced
using a high pressure die casting (HPDC) process, and the
Magnesium alloys have received special attention in trans-
HPDC castings generally have a thin g