Using pulse functions for shock analysis

Engineers commonly calculate transient responses to shock loads. You can define different shock loads as pulse functions of different wave shapes and periods and store them in AFU files. When you use them for Transient events, you can scale them with different shock magnitudes. The Scale Factor in the excitation dialog box allows you to create a set of predefined shock functions that can be used as excitations for different applications by scaling the functions as you define the loading condition.

The following graphics are examples of functions you can create with the Function Toolkit for Response Dynamics.

Acceleration shock pulse (half-sine function)

Force pulse (square function)

Velocity shock, or step velocity change (ramp function)

How do I

Convert SRS/PSD/Time functions

Import test data into Response Dynamics

Create nodal and enforced motion excitations

Create distributed load excitations

Create static excitations

Create a drop impact or constant velocity impact simulation

Calculate random RMS functions from PSD input

Using Fast RMS Fitted PSD functions

Create rotating force excitations

Correlate two PSD excitations

Create DDAM excitations

Learn more

Excitation loads

Response Dynamics Function Toolkit

Velocity Impact excitations

Rotating forces and unbalanced masses

PSD correlation

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Function requirements by excitation type

Function parameters by event type

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Using pulse functions for shock analysis, Simcenter 3D 2021.1 Series

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