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When Ansa is used as Abaqus preprocessor for analysis, the problem of applying bolt pretension is often encountered. In addition to the complex settings, it is also easy to make mistakes, and various problems may occur if you are not careful. The following records the Ansa bolt pretension setting process and some easy mistakes, which will be used as a reference for related analysis later.

1. Solid+Assistant

The connection between the solid bolt and the flange surface must be established first. For details, please refer to Abaqus contact settings 。

Recently, I often do some cold plate structural analysis, involving thin plate modeling. Although I have tried to use Shell units for analysis, the stress and displacement results of Shell units are larger than those of Solid units, and it is more likely that the calculation will not converge when it comes to contact problems. Fortunately, Ansa provides a way to generate a body mesh by stretching Shell units, which can quickly generate a Solid mesh through Shell units, greatly saving modeling time.

1. Related commands

In Ansa, the following commands are commonly used to set contact for Abaqus:

2. Contact pair

The most commonly used contact pairs are generally created by calling up the creation dialog box through AUXILIARIES → CONTACT → CONTACT .

Common settings are generally as follows: