Simulating Method of Uniaxial Stress Distribution of High Strength Metal Materials

Zhibo Wu, Tiehua Ma, Yanbing Zhang

Ekoloji, 2019, Issue 108, Pages: 705-709


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Molecular dynamics method is introduced into the finite element method of continuum by using composite finite element method. Morse potential function is used to deduce the uniaxial stress distribution law of high strength metal materials, and a composite model composed of grains, grain boundaries and voids is established. The effect of grain size on the non-linear stress-strain relationship and the change of macro-elastic modulus of materials during unidirectional linear step-by-step loading were studied by means of FEPg software. It can be concluded from the analysis experiments that with the decrease of grain size, the non-linear characteristics of high strength metal materials are gradually enhanced, and the extensibility of materials is also enhanced.


high strength, metallic materials, uniaxial, stress distribution, simulation


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