NDLI: Determination of Ductile Damage Parameters Using Hybrid Particle Swarm Optimization

Content Provider	Springer Nature Link
Author	Zhong, J. Xu, T. Guan, K. Zou, B.
Copyright Year	2016
Abstract	Damage models are widely used to describe the ductile damage and fracture of metals. This paper proposes a new approach to determine the damage parameters of the Gurson-Tveergard-Needleman model, which uses a load–displacement curve coupled with finite element method. The load–displacement curve was obtained from a tensile test of a smooth tensile specimen and contained information about the damage and fracture behavior of the tested material. The principle of damage parameters identification is to minimize the deviation between experimental and simulated load–displacement curves by a hybrid particle swarm optimization. As a combination of particle swarm optimization and simulated annealing, the hybrid particle swarm optimization is an economical and effective algorithm to identify damage parameters. The identified damage parameters are also verified by testing and simulating deformation shapes of the smooth tensile specimen which is used for parameters determination. Tests and simulations of notched tensile specimens were carried out to discuss the transformability of the identified damage parameters. It is observed that the value of critical void volume fraction of the Gurson-Tveergard-Needleman model decreases with the increase of stress triaxiality.
Starting Page	945
Ending Page	955
Page Count	11
File Format	PDF
ISSN	00144851
Journal	Experimental Mechanics
Volume Number	56
Issue Number	6
e-ISSN	17412765
Language	English
Publisher	Springer US
Publisher Date	2016-02-05
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Damage parameters Hybrid particle swarm optimization Finite element method Notched tensile specimens Continuum Mechanics and Mechanics of Materials Characterization and Evaluation of Materials Optics, Optoelectronics, Plasmonics and Optical Devices Structural Mechanics Vibration, Dynamical Systems, Control Mechanics
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering Aerospace Engineering

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