Event Series

Event series:

  • are used to define fields that vary with both time and space; and

  • work in combination with a library of utility routines that are accessible within some user subroutines to query and access events.

This page discusses:

See Also
Special-Purpose Techniques for Additive Manufacturing
In Other Guides
*EVENT SERIES
*EVENT SERIES TYPE
Accessing Abaqus Event Series Data

ProductsAbaqus/Standard

Introduction

The event series functionality in Abaqus/Standard allows you to define fields that vary with time and space (event series) and to provide access to them from user subroutines UMDFLUX and UEPACTIVATIONVOL. During the analysis, you can access only a slice of event series data, where a slice is a series of events from a current time increment. The utility routines that can be invoked to query or access the data are described in Accessing Abaqus Event Series Data. Examples of using event series functionality to specify raw material deposition and moving heat source for additive manufacturing process simulation are presented in Special-Purpose Techniques for Additive Manufacturing.

Event Series Definition

To define an event series, you must first declare the type of the event series, which determines the number of fields to include in the definition. The time and space variation of these fields are specified in tabular form as a list of discrete events corresponding to increasing values of time. In general, Abaqus does not make any assumptions about how the fields vary between discrete events (no interpolation of the data is performed); the interpretation of the discrete events is determined by the user.

The type and event series definitions have a global scope and must be unique for the model. By default, the time of events is assumed to be the step time, but you can define events using the total time instead. See Conventions for a discussion of these time measures.

Input File Usage

Use the following option to define the type of event series:

*EVENT SERIES TYPE, NAME=type_name, FIELDS=n

Use the following option to define an event series using the step time (default):

EVENT SERIES, NAME=event_series_name, TYPE=type_name, TIME=STEP TIME

Use the following option to define an event series using the total time:

EVENT SERIES, NAME=event_series_name, TYPE=type_name, TIME=TOTAL TIME

For example, an event series with one field and two events can be defined as follows:

*EVENT SERIES TYPE, NAME=type_name, FIELDS=1
EVENT SERIES, NAME=event_series_name, TYPE=type_name
t_1, x_1, y_1, z_1, field_value_1
t_2, x_2, y_2, z_2, field_value_2

Reading Event Series Data from a SIM Database File

To read event series data from a SIM database file, you must specify the name of the file. The SIM file must contain the complete definition of the event series, including the type declaration. You do not need to specify the file extension. By default, Abaqus uses the name of the event series from the SIM database, but you can modify this name.

Input File Usage

Use the following option to read event series data from a SIM database file:

EVENT SERIES, NAME=sim_event_series_name, FILE=file_name

Use the following option to change the name of the event series:

EVENT SERIES, NAME=new_event_series_name, FILE=file_name, SOURCE NAME=sim_event_series_name

Reading Event Series Data from an Alternate Input File

The event series data can be contained in a separate input file (see Input Syntax Rules).

Input File Usage

Use the following option to read event series data from an alternate file:

EVENT SERIES, INPUT=file_name

Positioning of Event Series Data

You can modify the position coordinates in the event series by specifying a translation and/or rotation for events relative to the origin of the global coordinate system.

Input File Usage

Use the following option to position the event series:

EVENT SERIES, TRANSFORM
positioning data