Navigation Bar
Place mouse on line with 
symbol to expand menu.
|
MECHANICAL DYNAMICS MODELING
(IMPULSE LOADING & MASS FLOW.
TEMPERATURE & ENERGY FLOW)
Below is a brief introduction of the Mechanical Dynamics Modeling required to study real-world problems.
I have used Mechanical Dynamics to aid in the design and analysis of the following systems
- Transport of chemical species (ions and molecules) through complex systems of both reactive and nonreactive components.
- Time-dependent Impulse Propagation through layers of Different Materials at High Temperatures and Pressures.
- Time-Dependent Transport of Sonic Energy impulses through Fluids.
- Developed mathematical and computer model for Species Transport to help Identify Sources of Water Pollution. This Model utilizes the Chemical Composition of Solvents, Surface Materials and Underground Formations.
- Performed EPA-certified Air Transport modeling (As per USEPA Document AP-42).
- Developed and Performed Air Transport modeling of gaseous molecules in air.
- Performed Time-Dependent, Three-Dimensional, Multigroup Radiation (Monte Carlo and Discrete Ordinate) Transport Calculations.
- Performed Time-Dependent Calculations for the Transmission of Fission Heating in Complex Materials with various Geometry and Physical Properties.
In the last 40 or so years, there has been a merger bewteen some aspects of physicis, chemistry and engineering to form a new field of study called materials science. Civilizations starting with the stone age used materials that were exclusively produced by nature. The materials became increasingly more complex as Man proceeded through the bronze and iron ages up to the twentieth century. By the middle of the 1900's the so-called engineered materials were the backbone of the civilized world. The world relies on the field of materials science to produce these engineered materials so we can continue to improve our lifestyle with new products. These engineered materials include ceramics, composites, polymers of all kinds (thermoplastics and thermosets), silicon based materials, and alloys. Their primary selection critera can be simply stated as "the material must do the job required by the final product in a cost-effective manner."
The selection criteria may at first seem trivial. However, requirements other that cost includes thermal conductivity, electrical conductivity, toxicity, flammability, hazardness, biodegradability, and its load-bearing ability. The load-bearing ability of the engineered material are determined using stress analysis.
In order to understand the process, one must first understand how engineered materials are constructed. You will have a material or materials that are engineered together in a way that forms an engineered structure. The table below summarizes how this works.
|
Engineered Structure |
Materials |
|
Composite |
Fiber (aramids, carbon, fiberglass, etc.) and Matrix Binder |
|
Ceramic |
oxide, nitride, silicon-type compounds or other semiconductors |
|
Polymer |
organic monomers such as styrene, ethylene, polymethyl methacrylate, etc. |
|
Silanes |
Usually contain at least one hydroxide, or alkoxide group. |
This stress analysis on these engineered materials is usually a mathematical undertaking where the internal forces are often independent on the choice of the material used in the structure. However, the materials used will ultimately determine the elastic properties (stress, strain, moduli) of the engineered structure. And in the end, a simulation (i.e., Monte Carlo) will most likely need to be run in order to describe the overall properties of the engineered material.
Go to Top of Page
|
