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![](images/page-551_ac70bb8360a626465ef4b8dbd7571a8f18cd8aa177f39bf3deaf4b4a26a4547c.jpg)  
R2D2, RAX2 RB2D2, RB3D2

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# 30.4 Capacitance elements

• “Point capacitance,” Section 30.4.1   
• “Capacitance element library,” Section 30.4.2

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# 30.4.1 POINT CAPACITANCE

Products: Abaqus/Standard Abaqus/Explicit Abaqus/CAE

# References

• “Capacitance element library,” Section 30.4.2   
• \*HEATCAP   
• “Defining heat capacitance,” Section 33.5 of the Abaqus/CAE User’s Guide, in the HTML version of this guide

# Overview

Capacitance elements:

• allow the introduction of concentrated heat capacitance at a point;   
• are associated with the temperature degree of freedom at a node; and   
• have a capacitance that can be specified as a function of temperature and/or field variables.

# Defining the capacitance value

The heat capacitance is associated with the temperature degree of freedom at the node of the element. You specify the capacitance magnitude, (density × specific heat × volume). Specify capacitance, not specific heat. You must associate this capacitance with a region of your model.

Input File Usage: \*HEATCAP, ELSET=name pcV where the ELSET parameter refers to a set of HEATCAP elements.

Abaqus/CAE Usage: Property or Interaction module: Special→Inertia→Create: Heat capacitance: select points: Capacitance

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# 30.4.2 CAPACITANCE ELEMENT LIBRARY

Products: Abaqus/Standard Abaqus/Explicit Abaqus/CAE

# References

• “Point capacitance,” Section 30.4.1   
• \*HEATCAP

# Overview

This section provides a reference to the capacitance elements available in Abaqus/Standard and Abaqus/Explicit.

# Element type

HEATCAP Point heat capacitance

Active degree of freedom

11

# Nodal coordinates required

X, Y, Z

# Element property definition

Input File Usage: \*HEATCAP

Abaqus/CAE Usage: Property or Interaction module: Special→Inertia→Create: Heat capacitance

# Element-based loading

None.

# Element output

# Nodes associated with the element

1 node.

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# 31. Connector Elements

Connector elements 31.1

Connector element behavior 31.2

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