Explosion inside the pipe using CONWEP method in Abaqus

Product Overview

In this example, we intend to simulate an explosion inside a pipe using the CONWEP method in the Abaqus software.

The CONWEP method is commonly used for simulating explosion and air-blast loading. In this problem, an explosive charge is located at the center of the pipe, and the effect of the explosion on the pipe is investigated.

Model Description

In this simulation, the explosive material is PE4, which is positioned at the center of the pipe. The explosion generates an internal blast load that acts on the inner surface of the pipe.

In the simulation, the effect of exploding 400 ,600 ,800 grams of PE4 on the pipe is investigated.

CONWEP Method

The explosion load is defined using the CONWEP method available in Abaqus. This method allows the effects of an explosive charge and the resulting blast loading to be represented without explicitly modeling the explosive material and surrounding air as separate finite element domains.

In this model, the explosive charge is positioned at the center of the pipe, and the CONWEP-based blast loading is used to simulate the effect of the explosion on the pipe.

Effect of Different Explosive Masses

The analysis is performed for different masses of PE4 to investigate the influence of the explosive mass on the response of the pipe.

The problem is solved three times using explosive masses of 400 grams, 600 grams, and 800 grams of PE4. The results obtained from these simulations are then compared to investigate the effect of the explosive mass on the pipe response.

Hoop Plastic Strain

The hoop plastic strain of the pipe is obtained from the Abaqus results for the different explosive masses.

The resulting diagram is used to investigate the effect of the explosive mass on the plastic deformation of the pipe. The Abaqus results are presented together with the corresponding results reported in the reference article.

Comparison of Abaqus Results with Article Results

The hoop plastic strain results obtained from Abaqus are compared with the results reported in the reference article.

The comparison demonstrates that the numerical results obtained from the Abaqus model are in good agreement with the corresponding results reported in the article.

Validation

This project has been validated, which means that the results obtained from the Abaqus software are similar to the results reported in the reference article.

In other words, this project is based on the reference research article, and the numerical results obtained from Abaqus are compared with the reported results.

What You Will Learn

• How to simulate an explosion inside a pipe in Abaqus.
• How to use the CONWEP method for explosion loading.
• How to define an explosive charge using PE4.
• How to position the explosive charge at the center of a pipe.
• How to simulate the effect of an internal explosion on a pipe.
• How to analyze different explosive masses.
• How to analyze 400, 600, and 800 grams of PE4.
• How to obtain hoop plastic strain from Abaqus results.
• How to plot the hoop plastic strain results.
• How to compare Abaqus results with the results of a reference article.
• How to validate an explosion simulation using published results.

Key Features

• Explosion inside a pipe.
• CONWEP explosion analysis.
• PE4 explosive material.
• Explosive charge located at the center of the pipe.
• Analysis of 400 grams of PE4.
• Analysis of 600 grams of PE4.
• Analysis of 800 grams of PE4.
• Hoop plastic strain calculation.
• Comparison of Abaqus results with article results.
• Validation against the reference article.
• Complete Abaqus CAE file.
• Abaqus INP file.
• Excel file containing results.
• Reference research paper.
• Step-by-step video tutorial.

Reference

This project is based on a reference research article. The research paper is included with the project files and can be used to review the explosion loading, numerical model, and reported results.