16 November 2018
- Last edited 16 November 2018
Hi, From the manual:
The Maximum Data Points To Plot property in the Options category.
option enables you to import a file containing the data points. This option is a non-constant amplitude proportional loading type. This data is depicted in a graph on the Worksheet. You can specify the number of data points this graph will display using the
Maximum Data Points To Plot
This option is only applicable for History Data loading and allows you to specify the number of data points to display in the corresponding graph that appears in the Worksheet. The default value is 5000 points. The graph displays the full range of points and all points are used in the analysis. However, depending on the value you set, every second or third point may not be displayed in the interest of avoiding clutter and making the graph more readable.
the time history file is ASCII file with a single column of data. The data are the load multipliers. For example, if you mount an accelerometer on a car axis, you can measure the g loading (say ever second) over some period of operation (1 day or typical use, 1 loop around a test track, etc.). Those g values can be stored in a load history file. You could then construct a FE model with a 1G loading. Multiplying the time history file by the 1G results produce a stress history that can be used to predict fatigue damage.
It is requested under the rainflow matrix option, because time history is the only loading mechanism in the Mechanical Fatigue Tool that produces a rainflow matrix.