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Contact Force Output to RCFORC
The Users Manual for LS-DYNA Concrete Material Model 159 is the first of two reports that completely document this material model. This report documents the theoretical basis, the required input format, and includes limited hypothetical problems for the user. About LS-PrePost. LS-PrePost is an advanced pre and post-processor that is delivered free with LS-DYNA. The user interface is designed to be both efficient and intuitive. LS-PrePost runs on Windows, Linux, and Unix utilizing OpenGL graphics to achieve fast rendering and XY plotting. The latest builds can be downloaded from LSTC's FTP Site.
Ls-dyna Keyword User's Manual Version 971
The ASCII file “RCFORC” contains the incremental forces contributed by contact algorithms. Due to the nature of the contact-impact interactions, the raw output tends to be very noisy and is of little value. To eliminate the inherent noise in the contact force output, LS-DYNA averages the force magnitude over the preceing output interval which results in a smoother and useful time history of the contact forces. The averaging is performed for all values between two output states as shown in the following figure. For more information, please read Remark #5 under the *DATABASE keyword in the LS-DYNA Keyword User’s Manual.
Ls-dyna Keyword User's Manual
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