Ansys EMC Plus and Charge Plus 2025 R2 User Manual

For the most up to date version of the User Manual, please visit the online version here: Online User Manual

The purpose of this manual is to provide a deep insight into the capabilities and features of the software product EMA3D® 2025 R2.

The manual describes the procedures to setup a valid model, to solve it and to post-process the results.

EMA3D is a three-dimensional finite difference time domain (FDTD) solver optimized for modeling physical phenomena such as lightning, hirf, EMP, P-static and any type of EMC and E3 problem.

EMA3D includes MHARNESS® a multi-conductor, multi-shield, multi-branched cable harness transmission line solver based upon the FDTD technique. The implementation of a time domain technique provides broad-band results often required to accurately characterize complex cable harness system behavior.

EMA Inc. has been utilizing these tools for over thirty-five years and, consequently, has developed and implemented numerous algorithms and enhancements, in addition to creating a variety of visualization techniques to aid in the interpretation and display of results.

The numerous capabilities of EMA3D are presented in the following sections:

1. Technical Notes, an introduction to the features of the Finite Difference Time Domain method as implemented in EMA3D

2. Capabilities, an overview of the capabilities implemented in EMA3D

3. Graphical User Interface, a description of the Graphical User Interface and of the procedure to set a valid simulation model

4. Tutorials, a set of exercises to learn how to use EMA3D

An overview of the new capabilities implemented in EMA3D 2025 R2 is available in the paragraph: What's New