---
type: concept
title: "Abaqus Element Indexes and Naming Conventions"
complexity: intermediate
domain: computational-mechanics
created: 2026-06-01
updated: 2026-06-01
address: c-000115
aliases:
  - Abaqus element index
  - Abaqus element naming conventions
  - Abaqus element type names
tags:
  - concept
  - finite-element-method
  - abaqus
  - element-library
  - naming
status: current
related:
  - "[[Abaqus-Analysis-User-s-Guide-Volume-IV|Abaqus Analysis User's Guide Volume IV]]"
  - "[[Abaqus Element Selection and Formulation]]"
  - "[[Abaqus Element Library]]"
  - "[[Abaqus Continuum Element Families]]"
  - "[[Abaqus Structural Element Families]]"
sources:
  - "[[Abaqus-Analysis-User-s-Guide-Volume-IV|Abaqus Analysis User's Guide Volume IV]]"
---

# Abaqus Element Indexes and Naming Conventions

## Definition

Abaqus element indexes and naming conventions are the product-specific lookup system for mapping element type names to families, topology, formulation, integration, and manual sections.

## How It Works

An Abaqus element name usually begins with a family prefix and includes dimensionality or topology information. Examples include `C` for continuum, `S` for shell, `B` for beam, `T` for truss, `COH` for cohesive, `CONN` for connector, `AC` for acoustic, `EC` for Eulerian, `PD` for discrete particle, and `PC` for continuum particle.

Suffixes and trailing letters often identify formulation variants. `R` commonly marks reduced integration, `H` marks hybrid pressure treatment, `I` marks incompatible modes, and field letters such as `T`, `P`, or `E` identify coupled temperature, pore-pressure, or piezoelectric variants in many continuum families.

Volume IV includes separate indexes for Abaqus/Standard, Abaqus/Explicit, and Abaqus/CFD. Some internal element names may appear in output databases or data files even though they are not listed for user selection.

## Why It Matters

The element index is the fastest way to prevent a modeling mismatch. It confirms whether the intended topology, physics, formulation, and product are actually available before the analyst commits to a mesh and procedure.

## Connections

- [[Abaqus Element Selection and Formulation]] explains what the name is trying to encode.
- [[Abaqus Continuum Element Families]] and [[Abaqus Structural Element Families]] cover the largest element-name families.
- [[Abaqus Element Library]] is the theory and workflow context for the indexes.

## Sources

- [[Abaqus-Analysis-User-s-Guide-Volume-IV|Abaqus Analysis User's Guide Volume IV]]