Finite Element Modeling of a Lightweight Composite Blast Containment Vessel

2008 ◽  
Vol 130 (1) ◽  
Author(s):  
Mohamed B. Trabia ◽  
Brendan J. O’Toole ◽  
Jagadeep Thota ◽  
Kiran K. Matta
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Epoxy Composite ◽  
Basalt Fiber ◽  
Steel Plates ◽  
Computational Time ◽  
Material Models ◽  
Efficient Procedure ◽  
Element Modeling ◽  
Steel Liner

This paper presents various approaches for finite element modeling of a cylindrical lightweight composite vessel for blast containment purposes. The vessel has a steel liner that is internally reinforced with throttle and gusset steel plates and wrapped with a basalt fiber∕epoxy composite. The vessel design is fairly complex, including many geometric details and several components with different material models. The objective of this work is to determine an accurate and efficient procedure for modeling this type of vessels. This model can be used within an iterative optimization process. Different modeling approaches using various combinations of element types, material models, and geometric details are explored. Results of these models are compared to available experimental data. Accuracy and computational time between all these models are also compared. A suitable modeling method is recommended based on these findings.

Modeling of a Light-Weight Composite Blast-Containment Vessel

2005 ◽  
Author(s):  
Mohamed B. Trabia ◽  
Brendan J. O’Toole ◽  
Jagadeep Thota ◽  
Kiran K. Matta
Keyword(s):  
Finite Element ◽  
Epoxy Composite ◽  
Process Analysis ◽  
Basalt Fiber ◽  
Light Weight ◽  
Analysis Method ◽  
Gusset Plates ◽  
Material Models ◽  
Steel Liner ◽  
Element Type

This paper presents finite element modeling of a lightweight composite vessel for blast containment purposes. The vessel has a steel liner that is internally reinforced with throttles and gusset plates and wrapped with a basalt fiber/epoxy composite. The vessel design is fairly complex, including many geometric details, and several different materials. The objective of this work is to determine an efficient analysis procedure that can be used in an iterative optimization process. Analysis approaches using various combinations of element type, material models, and geometric detail are explored. Finite element results are compared to experimental data. Accuracy and efficiency are compared for all cases and a suitable analysis method is recommended.

Finite element modeling of soft tissues: Material models, tissue interaction and challenges

2014 ◽  
Vol 29 (4) ◽  
pp. 363-372 ◽  
Author(s):  
Maren Freutel ◽  
Hendrik Schmidt ◽  
Lutz Dürselen ◽  
Anita Ignatius ◽  
Fabio Galbusera
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Soft Tissues ◽  
Material Models ◽  
Element Modeling ◽  
Tissue Interaction

Optimization of Finite Element Modeling Methodology for Projectile Models

2006 ◽  
Author(s):  
Srujanbabu Sridharala ◽  
Mohamed B. Trabia ◽  
Brendan O'Toole ◽  
Vinod Chakka ◽  
Mostafiz Chowdhury
Keyword(s):  
Finite Element ◽  
Expert System ◽  
Finite Element Modeling ◽  
Computational Time ◽  
Element Modeling ◽  
Fine Mesh ◽  
Aspect Ratios ◽  
Time Accuracy ◽  
Optimization Search ◽  
Launch Event

Gun-fired projectiles are subjected to severe loads over extremely short duration. There is a need to better understand the effects of these loads on components within a projectile. While experimental data can be helpful in understanding projectile launch phenomena, collecting such data is usually difficult. There are also limitations on the reliability of sensors under these circumstances. Finite element modeling (FEM) can be used to model the projectile launch event. Currently, engineers usually use large number of elements to accurately model the projectile launch event, which results in an extremely long computational time. FEM results in these cases are always subject to questions regarding accuracy of the results and proof of mesh stability This paper presents an expert system that can reduce computational time needed to perform FEM of gun-fired projectiles. The proposed approach can result in reducing computational time while ensuring that accuracy of results is not affected. Recommendations of the expert system are reached through two stages. In the first stage, an equivalent projectile with simple geometry is created to reduce the complexity of the model. In the second stage, parameters controlling mesh density of the equivalent projectile are used as variables in an optimization scheme with the objective of reducing computational time. Accuracy of the acceleration results from an optimized model with respect to a model with an extremely fine mesh is used as an inequality constraint within the optimization search. A projectile model meshed with aspect ratios obtained from the optimization search produces good agreement with the finite element results of the original densely-meshed projectile model while significantly reducing computational time. It is anticipated that this approach can make it easier to conduct parametric analysis or optimization studies for projectile design.

scholarly journals Nano finite element modeling of the mechanical behavior of biocomposites using multi-scale (virtual internal bond) material models

2007 ◽  
Vol 83A (2) ◽  
pp. 332-344 ◽  
Author(s):  
Ganesh Thiagarajan ◽  
Kavita Deshmukh ◽  
Yong Wang ◽  
A. Misra ◽  
J. Lawrence Katz ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Mechanical Behavior ◽  
Internal Bond ◽  
Material Models ◽  
Element Modeling ◽  
Multi Scale
Sign in / Sign up

Export Citation Format

Share Document