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abaqus2020中cohesive單元傳熱（COH2D4T）--原創例子（附模型）

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ABAQUS2020 ：cohesive单元可以传热，二维模型-显示分析可以使用通用接触

New Functionality：
- Coupled temperature-displacement cohesive elements (COH2D4T, COH3D6T, COH3D8T, and COHAX4T) can be used in a fully coupled thermal procedure. You can define the thermal interaction constitutive behavior of the cohesive elements.
- Coupled temperature-pore pressure cohesive elements (COD2D4PT, COD3D6PT, COD3D8PT, and CODAX4PT) can be used in soils procedures. You can define the fluid constitutive behavior of the cohesive elements. You can also define a gap fluid heat convection behavior.

--------------------------------------------------------------下面簡單介紹下步驟

1. cohesive屬性裏設置：

密度/熱膨脹系數/比熱容（跟普通材料一致）;

牽引-分離剛度（必須設置）;

損傷起始及演化（可以不設置）；

2. 设置COH2D4单元；

3. 导出inp文件

4. 修改inp文件：

改爲COH2D4T單元，

爲cohesive属性添加*GAP CONDUCTANCE；

------------------------------------------------------

例子結果：

1 含有COH2D4單元，并未修改inp文件

2 不含cohesive單元（把cohesive單元屬性及網格屬性改爲普通材料）

3 含有COH2D4單元，并修改inp文件

——单元修改爲COH2D4T，截面属性里添加*GAP CONDUCTANCE，熱膨脹系數改爲和普通材料一樣

結論：基于COH2D4T單元的傳熱結果正確/整個模型的應力雲圖分布正確。

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