Impact Simulation and Analysis of Sandwich Structures

<p>Impact damage on aircraft and spacecraft can be a severe problem that may cause catastrophic results. Several aerospace structures have been used to resist or absorb energy in the occasion of impact. Among these, a sandwich structure has advantages with high stiffness, strength to weight ratio, and its relatively cheap cost. However, finding the impact structural response of a sandwich structure, by performing experiments, has disadvantages. First, impact is a complex problem with a multi-parameter nature and many factors should be considered. Secondly, it is a destructive test and the test subject may be damaged during the test. On the other hand, computer simulation based on a finite element code has advantages considering both the cost factor and technical issues associated with real tests.</p> <p>The primary emphasis of this research is to establish the correlations between impact parameters and damage modes on sandwich structures using computer simulations. A finite element program, LS-DYNA, is used to perform impact simulations and to analyze results. A number of experiments are conducted to compare practical results with simulations.</p>

Name thesis:degree_name

Master of Science in Aerospace Engineering

Level thesis:degree_level

Thesis - Open Access

Discipline thesis:degree_discipline

Aerospace Engineering

Year

2006

Author dc:creator

• Kim, Daewon

Contributors dc:contributor

• Yi Zhao
• Habib Eslami
• Frank Radosta

• impact
• simulation
• analysis
• sandwich structures
• Aeronautical Vehicles
• Aerospace Engineering
• Structures and Materials

Repository record dc:identifier

https://commons.erau.edu/db-theses/270

OAI identifier oai:identifier

oai:commons.erau.edu:db-theses-1142