A Ball Indentation Characterization Method for Mullins Effect Parameters
A technology of ball indentation and parameters, applied in the field of Mullins effect characterization of polymer materials, can solve the problems of apparent stress softening effect, rare and other problems
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[0061] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0062] Such as figure 1 As shown, the ball indentation characterization method of the Mullins effect parameter provided by the present invention, the steps of its realization are as follows:
[0063] Step 1: Establish the relationship between the physical quantities in the indentation experiment by introducing a dimensionless function in the indentation experiment;
[0064] Step 2: Calculate and obtain the explicit expression of the above dimensionless function according to the finite element model including Mullins effect;
[0065] Step 3: Carry out the indentation test of the ball indenter to obtain the loading and unloading load-displacement curve of the actual material;
[0066] Step 4: Obtain the initial shear modulus and hyperelastic parameters of the material according to the explicit expression of the dimensionless function and the inversion of t...
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