Analysis Control - Equivalent Linear (Dynamic)

<Equivalent Linear -  Analysis Control>

Effective Shear Strain

Effective Shear Strain Amplitudes Factor

The ratio between effective strain and maximum strain.
 

Computing Maximum Shear Strain

Calculating maximum shear strain for each mesh set.

1. Frequency Domain

2. Time Domain

Convergence

Max. Number of Iteration (Transmitting Boundary)

Enter max number of iteration transmitting boundary analysis.
Max. Number of Iteration (Soil Element)

Enter max number of iteration for soil element analysis.
Tolerance

Enter Norm Convergence criteria.
 

Interpolation Control

Frequency (Hz)

Enter frequency intervals.

Interpolation Control

4 Types of interpolation controls that can be assigned:

1. Compute at All frequencies:   Analysis considers all frequencies.

2. Compute at an Interval of 4:   Analysis considers input frequency at intervals of 4.

3. Compute at an Interval of 8:   Analysis considers input frequency at intervals of 8.

4. Compute at an Interval of 16: Analysis considers input frequency at intervals of 16.

<Interpolation Control Table>

Response Spectrum

First Frequency:  Necessary parameter for response spectrum.

Last Frequency:  Necessary parameter for response spectrum.

Total Number of Frequency Steps: Total number of steps between the First and Last frequencies.

<Damping>

<Mass Matrix -  Analysis Control>

Plane Element

Two factors used in the Total Mass Matrix equation:

1. Lumped Mass (alpha)

2. Consistent Mass (beta)

Beam Element

Two types of mass matrices for a beam element:

Beam Mass Matrix

            1. Consistent Matrix

            2.  Lumped Mass