# DKTS3

DKT Triangle Shell

* Number of Nodes: 3
* Number of DoFs: 6 (Translation, Translation, Translation, Rotation, Rotation, Rotation)
* DoF Label: U1, U2, U3, UR1, UR2, UR3

![encoding](/files/P7VszhaKHxlDO4hFQFpF)

## Syntax

```
element DKTS3 (1) (2...4) (5) (6) [7] [8]
# (1) int, unique element tag
# (2...4) int, node i, j, k
# (5) int, material tag
# (6) double, thickness
# [7] int, number of integration points, default: 3
# [8] bool, nonlinear geometry switch, default: false
```

## Remarks

1. If the nonlinear geometry switched on, the transformation between the global and local reference frames will depend on the current displacement. The nonlinear transformation is similar to the corotational transformation, and the local response is still linear. Thus, it follows "large displacement, small deformation" assumption.

## Sample

The model can be downloaded. [DKTS3.zip](https://github.com/TLCFEM/suanPan-manual/blob/dev/docs/Library/Element/Shell/DKTS3.zip)

![example](/files/-MQ5rzNlBLcrVyxgfz8X)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://tlcfem.gitbook.io/suanpan-manual/element/shell/dkts3.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.