|
Dept of Aerospace and Engineering Mechanics |
|
Prof. Ala Tabiei |
|
Micromechanics-Based Composite Material Model For Impact & Crashworthiness Finite Element Simulation |
|
The goal of this investigation is the development of a nonlinear constitutive model, based on the micromechanical level (modified unit cell method), for brittle, woven and laminated composites and implementation in nonlinear explicit finite element code. The constitutive model will incorporate constituent failure modes, material nonlinear behavior, as well as the effect of strain rate on the failure mechanisms. This investigation will result in new formulation for shell element for the analysis and numerical impact simulation of composite structures. The findings of this investigation will assist many national research laboratories, and many supporting industries in evaluating and performing finite element analysis and impact simulation of composite structures under hard body impact, crashworthiness, penetration, and explosion. Such formulation will enable designers to reduce design cycles through elimination of initial prototype testing. This will results in a simulation tool that can be used for quick turn around time, more efficient and cheaper designs of composite structures like helicopter fuselage (see Sikorsky helicopter on right), missile casing, armored vehicles, etc 
|
