A study of fundamental damage mechanic approaches in ductile metals and new biaxial test
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Abstract
This paper deals with the studies of damage behaviours and damage mechanics in ductile metals in recent research areas, including appropriate specimens and suitable experiment systems for the damage mechanics studying. The ductile metals are commonly used in structural components, automobile industries and aerospace industries. Hence, these materials experience some stress-states from external factors in various forms. Therefore, understanding of the material behaviour under the occured stress-state is very important for designing, particularly for the damage behaviours. This study presents following conclusions: 1) the ductile damage depends mainly on a stress triaxiality and a Lode-parameter 2) the frequently used damage approaches for research in the ductile damage are GLD damage model and CDM damage model and 3) the biaxial specimens under the biaxial test system with the DIC-strain-measurement is suitable for studying in a very small damage region.
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References
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