Reformulation of the Multiple Shear Mechanism Model for Faster Numerical Analysis

Key Points

• The aim is to reformulate the multiple shear spring model to reduce computational load during seismic response analysis.
• Developed a reformulation of the multiple shear spring model.
• Calculated contributions of individual springs to the constitutive relation analytically.
• Computed the sum of contributions using analytical methods rather than numerical triple integrals.
• Compared results from the reformulated elastoplastic tensor with traditional methods.
• Successfully provided an explicit elastoplastic tensor between strain increments and stress increments.
• Demonstrated the feasibility of the reformulation, which was not possible with the traditional formulation.
• Showed reduced computational load in numerical analysis compared to the conventional triple integral method.