Sample S02: Lumped Mass Models (with Passive Damper)

Basic Information | Commentary

Basic Information

 

Building Overview

The file name is in the format of (B sample number, building number) _ (Number of story) _ (structure type).

B01_04F_LMM: 4-story lumped mass model

Basic with hyteresis damper with oil damper with viscous damper
B01_04F_LMM B01_04F_LMM_H B01_04F_LMM_O B01_04F_LMM_V

B02_10F_LMM: 10-story lumped mass model

Basic with hyteresis damper with oil damper
B02_10F_LMM B02_10F_LMM_H B02_10F_LMM_O

B03_20F_LMM: 20-story lumped mass model

Basic with hyteresis damper with oil damper
B03_20F_LMM B03_20F_LMM_H B03_20F_LMM_O

 

Database

Building information includes the source information of creating input data of STERA_3D, such as plan, elevation, section, material strength.

  Building Information (*.pdf) Input file (*.stera) STERA_3D version Author Date
1 B01_04F_LMM

B01_04F_LMM

B01_04F_LMM_H

B01_04F_LMM_O

B01_04F_LMM_V

 9.3 Taiki Saito 2017.10.08
2 B02_10F_LMM

B02_10F_LMM

B02_10F_LMM_H

B02_10F_LMM_O

 9.3 Taiki Saito 2017.10.08
3 B03_20F_LMM

B03_20F_LMM

B03_20F_LMM_H

B03_20F_LMM_O

 9.3 Taiki Saito 2017.10.08

 

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Commentary

B01_04F_LMM_H: How to prepare input date for 4-story lumped model with hysteresis damper

Select "Option"> "Structure" from the menu. Leave degrees of freedom number (1) in the horizontal X direction and restrict other degrees of freedom number (2345678).

Since the restoring force characteristic of each layer is defined as a passive damper, select "option"> "member" from the menu and change the passive damper to be "Considered".

Dummy numerical values are put in the spans in the X direction and the Y direction (for example, 5000 mm in the X direction, 1000 mm in the Y direction). Place the passive damping members (D1 on the first floor, D2 on the second floor, etc.) and enter the weight and the height of the story. Enter up to 4th floor (D4).

Place the passive damper members in parallel. The number shall be the consecutive number (D5 on the first floor, D6 on the second floor, etc.). Enter up to 4th floor (D8).

The back (D1 to D4) is the basic members with elastic spring, and the foreground (D5 to D8) is the dampers with bi-linear hysteresis. Click the icon of the passive damper and enter the characteristics of the basic members (D1 to D4, elastic spring).

Subsequently, input the characteristics of the hysteresis damper (D5 to D8, bilinear hysteresis).

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