MDOF Model Module

Purpose

The MDOF Model Module allows computing an estimation of the global forces developed on structures that can be considered as lumped mass systems (e.g. RC structures with rigid floors) using a simplified model that assumes that the inertia forces are equal to the restoring forces (neglecting damping forces):

This model gives only approximated values with more accuracy when the velocities are small (viscous damping hypothesis), but enables computing using only cinematic values.
The inertia forces and torque (IF, IT), the story inertia forces and torque (SF, ST), the base shear (BS) and the base overturning moment (BOM) are computed as defined in calculations.

This module uses the MDOF Model file type (*.mm) to load and save the model information;

Main Features

• Calculation of an estimation of the global forces developed on  lumped mass systems, namely the Inertia force, inertia torque, story inertia force, story inertia torque, base shear and base overturning moment.

• Load and save into files of the model data;

• Automatic ASCII report generation of the model data;

• MDOF channels preview;

Calculations

MDOF Model Calculations

(Click to enlarge)

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